Data & samples | Beautiful Danish Data

Paper	Journal	Period	Sample size	Level	Data
Frederiksen et al. (2026) Working Hours, Top Management Appointments, and Gender: Evidence from Linked Employer-Employee Data	Journal of Labor Economics	1994–2010	168,499 employees	Individual + firm	Integrated Database for Labour Market Research (IDA) Danish Labour Force Survey (DLFS/AKU) linked on person identifier Organizational hierarchy codes (occupation-based) from registers
Humlum and Plato (2026) Reskilling and Resilience	AER: Insights (forthcoming)	1995–2017 (work accidents 1998–2017)	2,915 injury events (male craft workers); 2,103 stable partners	Individual	Work accident reports from Labour Market Insurance (AES) Education Register (UDDA) Integrated Database for Labour Market Research (IDA) National Patient Registry (hospitalizations) Health Insurance Registry (primary care and specialist visits) Prescription Drug Database Population register (BEF) for partner linkages
Caplin et al. (2026) Subjective Earnings Risk	Review of Economic Studies	Survey January 2021; administrative data through 2022	10,942 employed respondents (gross sample 14,683 respondents aged 20–65)	Individual	Copenhagen Life Panel (CLP) survey, January 2021 wave, linked on CPR number Income-tax register earnings (IND) Monthly employer-employee match and earnings data (BFL/eIndkomst) Demographic, education, household composition and household wealth registers
Andersen et al. (2026) Disaggregated Economic Accounts	Quarterly Journal of Economics	2018 (consumer spending 2018–2019)	approx. 2,700 consumer cells and approx. 2,600 producer cells; around 43 million entries	Individual + firm	Danske Bank geo-coded transaction-level data (about 20% of Danish adult consumers), 2018–2019 Government tax and income registers (labour compensation, mixed income, interest, dividends, transfers) Employment registers linking adults to industry of main employment and region Danish national accounts (SNA positions, input-output tables), 2018 CrediWire producer-to-producer transactions (about 5 million) Firm-level export and import data for manufacturing firms
Taubinsky et al. (2026) Beliefs About the Economy Are Excessively Sensitive to Household-Level Shocks: Evidence from Linked Survey and Administrative Data	Quarterly Journal of Economics	2012–2019 (robustness from 2008; population registers from 1991)	35050 usable responses (from 55171 survey respondents aged 25–60)	Individual	Danish Consumer Expectations Survey (Statistics Denmark Omnibus), linked on CPR Tax registers from SKAT: income, liquid assets, net wealth, taxes (IND, formue) Civil Registration System / Population register (CPR/BEF) Education register (UDDA) National Patient Register (LPR), emergency room visits 1994–2018
Heinesen et al. (2026) Instrumental Variables with Unordered Treatments: Theory and Evidence from Returns to Fields of Study	Journal of Labor Economics	Applications 1994–2002 (Denmark), outcomes eight years after application	–	Individual	Danish administrative data on all applications to post-secondary education 1994–2002 (coordinated admission system) Population register and other registers (background, completed field of study, annual earnings) Norwegian post-secondary application data 1998–2004 linked to registers (comparison country)
Almar et al. (2026) Educational Ambition, Marital Sorting, and Inequality	Journal of Labor Economics	1980–2018	on average 3,031,511 individuals per year aged 19–60; 1,800,866 individuals in couples per year	Individual	Population register with partner links (BEF) Education register with four-digit ISCED programme codes (UDDA) Employment register with hourly wages (IDAN) Income register (IND) Danish Labour Force Survey (LFS/AKU), 2000–2018 Employment register for hours, part-time/full-time (RAS)
Fadlon et al. (2026) Survivors' Mental Health and the Protective Role of Income Stability	AER: Insights	1995–2018	12,637 treatment and 15,212 control households	Individual	Population Registry (BEF) with family linkages Death Registry National Patient Registry (LPR) Income Registry (earnings, transfers, pension payouts, capital income) Education Registry Pharmaceutical Database / prescription register (LMDB) Health Insurance Registry (psychiatrist visits)
Baker et al. (2026) Universal Investments in Toddler Health: Learning from a Large Government Trial	Economic Journal	Births 1959–1967 (trial covered births January 1959–April 1968); register outcomes 1977–2020	87,336 individuals	Individual	Transcribed handwritten Copenhagen nurse records (Copenhagen City Archives), 1959–1967 cohorts Central Person Register (CPR) linkage Education registers (UDDA) Income registers (IND) Death register National Patient Register (LPR) Copenhagen Perinatal Cohort (CPC), births 1959–1961 Family links to parents, siblings, children and spouses
Jakobsen et al. (2026) Fertility and Family Labor Supply	American Economic Review (forthcoming)	2004–2018 (tax sample 2004–2018; estimation sample 2010–2018)	10,851,444 individual-year observations (estimation sample); 2,531,181 (tax sample)	Individual	Monthly payroll records (BFL/eIndkomst) Annual income tax data (IND) Population and family register (BEF), family definitions and parent links Education register (UDDA) Labour market experience from ATP payments Parental leave spell register (OF)
Hasager and Jørgensen (2026) Sick of Your Poor Neighborhood? Quasi-Experimental Evidence on Neighborhood Effects on Health	Journal of Public Economics	1985–2017 (refugees arriving 1986–1998)	21,965 refugees	Individual	National Patient Register (LPR) Health Insurance Register (SYSI, SSSY) Integrated Database for Labour Market Research (IDA) Income register (IND) Population register (BEF) and address/mobility registers (BEFBOP, BEFADR) Migration register (VNDS) Criminal convictions register (KRAF) O*NET occupational data merged via occupation codes
Jensen and Zhang (2026) Effects of Parental Death on Labor Market Outcomes	American Economic Review	1980–2019 (parental deaths 1985–2014)	Treated: 21919 daughters and 24354 sons whose mother died first; 74991 daughters and 85022 sons whose father died first (plus matched controls)	Individual	Cause of death registers (DODSAARS/DODSAARG) Population register with parent-child links (BEF) Income and labour market registers (IND, AKM, IDAS/IDAN/IDAP), ATP-based hours proxy Health Insurance Register for GP/psychologist/psychiatrist visits (SYSI/SSSY) National Patient Register (LPR_ADM/LPR_DIAG) Psychiatric Central Research Register (PSYK_ADM/PSYK_DIAG) Prescription register (LMDB) Childcare registers (DAGI/BOERNFB)
Daysal et al. (2026) Germs in the Family: The Short- and Long-Term Consequences of Intrahousehold Disease Spread	American Economic Review	Children born 1981–2017; outcomes 1980–2019	1,230,180 children	Individual	National Patient Register (LPR) Medical Birth Register (MFR) Population register (BEF) Register-Based Labour Force Statistics (RAS) Income Statistics Register (IND) Education Register (UDDA) Academic Achievement Register (9th grade test scores) Psychiatric Central Research Register (PCRR) Health Insurance Register (Sygesikringsregisteret) Childcare enrollment data National Child Database (breastfeeding)
Johannesen et al. (2026) Taxing the Wealth of the Poor: Evidence from the Danish Old-Age Support Asset Test	AER: Insights	2014–2018 (main cross-section); bank data 2014–2016	2,526,421 observations of singles aged 60+ (2,054,987 aged 65+; 1,283,721 low-income 65+), pooled 2014–2018; bank sample 461,471 observations, 2014–2016	Individual	Administrative registers on assets, income and demographics (Statistics Denmark): third-party reported and self-reported liquid wealth Danske Bank customer data: monthly spending, cash withdrawals and account balances (2014–2016)
Sander (2026) Universal Daycare and Mothers' Working Lifetime	Economic Journal	First births 1964–1975; earnings 1980–2015	370,602 mothers	Individual	1970 Census (FT70) with parish of residence Historical daycare institution yearbooks digitised (1964–1975) and daycare institutions in registers from 1976 Population register with parent-child links and fertility histories (BEF) Earnings from tax records (income registers), 1980–2015 Supplementary Pension Fund register (ATP) contributions for hours and participation Education registers (UDDA)
Altmann et al. (2026) The Direct and Indirect Effects of Online Job Search Advice	Review of Economic Studies	Intervention from March 17, 2019; outcomes over the following 12 months (before March 2020)	92,098 individuals	Individual	Field experiment on jobnet.dk (Danish public employment service platform): treatment assignment and dashboard exposure Jobnet job search profiles, vacancy information and registered job applications (with occupation codes) Statistics Denmark register data on employment, hours and earnings (12 months after start) Population registers and benefit payment records (UI recipients) Register data on the universe of unemployment-to-job occupational transitions (to build recommendations)
Andersen et al. (2026) Breaking Bad: How Health Shocks Prompt Crime	AEJ: Applied Economics	–	–	Individual	Danish administrative registers on cancer diagnoses (timing of diagnosis) Crime registers (first crimes and re-offenses) Income and welfare program registers
He and Maire (2025) Managing Inequality: Manager-Specific Wage Premiums and Selection in the Managerial Labor Market	Review of Economics and Statistics	1995–2011 (per 2019 working-paper slides)	–	Individual + firm	Matched employer-employee data covering all Danish workers and firms (IDA) Occupation codes used to identify managers Firm balance sheet data for private-sector firms (FIRE) Mergers and acquisitions identified from firm and establishment identifiers
Humlum et al. (2025) Changing Tracks: Human Capital Investment after Loss of Ability	American Economic Review	1995–2017 (work injury claims 1998–2017)	14,481 injury events (14,369 distinct individuals); 4,568 events (4,528 individuals) for workers with vocational degrees with access to higher education	Individual	Industrial Injury Register (Arbejdsskaderegisteret) / workers' compensation claims from AES National Patient Register (LPR) Health Insurance Register (Sygesikringsregisteret) Prescription Drug Database (LMDB) Education Register (UDDA) Course Participant Register (VEUV) Danish Register for Evaluation of Marginalization (DREAM) Integrated Database for Labour Market Research (IDA), linked to O*NET Population register (BEF/POP)
Hansen et al. (2025) Depressed Peers in Early Parenthood	Review of Economics and Statistics	2012–2017 (health visitor records)	–	Individual	Municipal health visitor records with mothers' group assignments and EPDS postpartum depression screening Statistics Denmark registers: GP consultations, psychologist/psychiatrist appointments, hospital contacts for mental illness, sick leave
Serena (2025) The Causal Effect of Scaling up Access to Psychotherapy	Review of Economics and Statistics	1995–2019 (published abstract; the 2021 CEBI working paper uses 2000–2016)	–	Individual	National Patient Register (LPR), psychiatric and somatic hospital contacts National Health Insurance Service Register (Sygesikringsregistret), primary care and psychologist services Prescription drug purchases (psychiatric drugs) DREAM register (employment, sick leave, disability pension) Yearly socioeconomic registers (population, income, education)
Hummels et al. (2025) No Pain, No Gain: Work Demand, Work Effort, and Worker Health	Review of Economics and Statistics	1995–2012 (health data 1996–2012; monthly payroll data 2008–2012)	3,336,244 annual worker-year observations; 8,834,846 monthly observations	Individual + firm	Firm Statistics Register (FIRM) Integrated Database for Labour Market Research (IDA) Firm-worker link (FIDA) Accounts Statistics (Regnskabsstatistik) Prodcom firm sales by product (VARS) Health care registers: prescription drug purchases, doctor visits and hospitalizations (National Patient Register) Monthly payroll records with earnings and hours (eIndkomst/BFL) Monthly firm VAT sales and material purchases (FIKS)
Kleven et al. (2025) Micro versus Macro Labor Supply Elasticities: The Role of Dynamic Returns to Effort	American Economic Review	1980–2018	N = 2,501,126 and 2,428,411 in the main elasticity regressions (Table 1)	Individual	Linked administrative registers on earnings, occupation (DISCO), firm and demographics, full population Employer-employee matched data (firm x occupation job cells) ATP pension contribution-based hours measure (1980–2018) Monthly uncapped hours measure (from 2008) Income tax records (2009 tax reform variation)
Kristiansen and Sheng (2025) The Physician-Patient Match and Health Inequality	Review of Economics and Statistics	1995–2019 (clinic closures 1999–2016)	over 352,000 adult patients affected by 894 clinic closures; 1,019,005 observations in the main mortality regression	Individual	National Health Service Register: patient-to-GP clinic assignment Service Provider Registry (physician IDs) Cause of Death Register National Health Insurance Service Registry: visits, services, reimbursements Hospital/patient data and first-line treatments for chronic conditions Education registers and parent links (BEF/UDDA) for patient SES and physicians' parental education
Arendt et al. (2025) Permanent Residency and Refugee Immigrants' Skill Investment	Journal of Labor Economics	Residency cohorts 2003–2004, followed seven years since temporary residency (to 2011)	767 unique individuals; 5,122 person-year observations	Individual	Population, income, education and immigration registers linked via the Central Person Registry Danish language test results Employment in annual full-time equivalents (register data)
Buus et al. (2025) Do Export Support Programs Affect Prices, Quality, Markups, and Marginal Costs? Evidence From a Natural Policy Experiment	Review of Economics and Statistics	2002–2015	18,181 firm-years (manufacturing exporters in Prodcom data, 77 destinations)	Firm	Trade Council export promotion records: firm purchases and Trade Council approaches by destination International Trade in Goods statistics: Intrastat and Extrastat firm exports by CN8 product and destination (UHDI) Manufacturers' Sales of Goods (VARES/Prodcom): firm sales by product, value and quantity Firm Statistics Register (FirmStat) and Firm Accounts Statistics (FIRE)
Simonsen and Skipper (2025) Healthy at Work? Evidence from a Social Experimental Evaluation of a Firm-Based Wellness Program	AEJ: Economic Policy	Randomisation 2008; follow-up to 2020 (PCP visits and work outcomes), 2019 (prescriptions), 2018 (hospitalisations)	7,541 workers (3,735 treatment, 3,806 control) in 314 work-units	Individual + firm	Healthy-at-Work randomised experiment records (work-unit assignment, September 2008) Primary care physician consultation records (Statistics Denmark registers) Prescription drug purchase records Hospital contact / hospitalisation records Employment, sickness absence and turnover registers Socio-economic background registers
Jensen and Manning (2025) Background Matters, but Not Whether Parents Are Immigrants: Outcomes of Children Born in Denmark	AEJ: Applied Economics	1980–2017	396,417 children (Table 1 total); 362,460 with two Danish-born parents, 10,399 with two immigrant parents, 20,908 with one immigrant parent, 2,650 with a parent from Greenland/Faroe Islands	Individual	Danish register data linking children to parents (Statistics Denmark, 1980–2017) Income and earnings registers (annual labour income incl. self-employment, transfers) Monthly employment register (hours, hourly wages, from 2008) Education registers (incl. survey-based registration of foreign education of immigrants) Criminal justice registers (convictions, prison sentences, dropped charges / not-guilty verdicts) Occupation codes (ISCO88)
Houmark et al. (2025) Genetic and Socioeconomic Achievement Gaps in Elementary School	Economic Journal	Births 1994–2008; national tests from 2010	40,136 individuals with 87,917 reading test outcomes (24,062 psychiatric cases, 16,074 random controls); sibling sample 2,705 individuals	Individual	iPSYCH2015 case-cohort genotype sample (neonatal blood spots from the Danish National Biobank) Danish national tests (reading and mathematics, grades 2–8) Population registers with parent-child links (BEF) Parental income registers (IND) Parental education registers (UDDA) Psychiatric diagnoses of parents (patient registers) School and neighbourhood identifiers
Daysal et al. (2025) Do Medical Treatments Work for Work? Evidence from Breast Cancer Patients	AEJ: Economic Policy	1990–2008 (diagnoses 1990–1998)	2,823 observations (women)	Individual	Danish Breast Cancer Cooperative Group (DBCG) clinical Breast Cancer Database Register of Causes of Death Register-Based Labour Force Statistics (RAS) Income Statistics Register DREAM weekly transfer register Population Register (BEF) Education Register
Eshaghnia et al. (2025) The Impact of the Level and Timing of Parental Resources on Child Development and Intergenerational Mobility	Journal of Labor Economics	1980–2019	around 100,000 children and their families (105,953 individuals; 98,686 in the IGE log-log sample)	Individual	Population register with family links (BEF) Education register (UDDA) Income, assets and transfers register (IND) Sentencing register (KRAF) Incarceration register (KRIN) Danish Household Expenditure Survey Danish Longitudinal Survey of Children (DALSC) 9th-grade national leaving exam scores
Bjerre-Nielsen and Gandil (2024) Attendance Boundary Policies and the Limits to Combating School Segregation	AEJ: Economic Policy	–	–	Individual	Register data on the universe of Danish children (Statistics Denmark) School attendance boundary data with boundary changes over time
Brenøe et al. (2024) Is Parental Leave Costly for Firms and Coworkers?	Journal of Labor Economics	2001–2013 (births 2003–2012)	24,829 treatment events (births) and 162,151 control events covering 45,940 unique firms; 9,934 treatment events in 16,080 firms after trimming	Individual + firm	Central Person Registry with parent-child links (CPR/BEF) Parental leave benefit payouts and employer leave reimbursements Central education register (UDDA) Integrated Database for Labour Market Research (IDA) Annual employer wage payment records (CON and RAS) Mandatory pension contributions for approximate hours (ATP) Value-added tax (VAT) firm sales and purchases data
Hansen et al. (2024) Grades and Employer Learning	Journal of Labor Economics	Students enrolled on 1 August 2007 who graduated before 2011; earnings for the first five years after graduation	3,813 students	Individual	University student records (Aarhus University and University of Copenhagen) with grades before and after the 2007 recoding Administrative registers from Statistics Denmark (background, parental income and education, earnings)
Andersen et al. (2024) Dynamic Spending Responses to Wealth Shocks: Evidence from Quasi Lotteries on the Stock Market	AER: Insights	2009–2016	around 13.5 million household-month observations comprising 390,000 distinct households	Individual	Danske Bank customer records: transaction-level spending, securities portfolios and online logins (2009–2016) Population register (household identifiers, age) Tax register: income and banks' year-end account-level reports Employment register (employer links) Education register
Dustmann et al. (2024) Refugee Benefit Cuts	AEJ: Economic Policy	Residency granted 2001–2003; outcomes up to 10 years after residency	4,843 individuals	Individual	Danish Immigration Service residence permit records Income register from tax authority records (earnings, transfers, taxes) Hourly wage and occupation data Labour market register (employment status) Population register (BEF) Crime registers: police and court records of charges and convictions Job openings data from Jobindex.dk
Dustmann et al. (2024) Unintended Consequences of Welfare Cuts on Children and Adolescents	AEJ: Applied Economics	Residency granted January 2001–December 2003; income data through 2019	6,888 individuals (3,406 adults aged 18–45 with children and 3,482 children aged 0–18)	Individual	Danish Immigration Service residence permit records Historical Migrations database Income register from tax authority records Register on Completed Education Daycare register 9th-grade exam grades, 6th-grade national language test scores and school well-being survey (Ministry of Education) Crime registers: police and court records
García-Miralles and Leganza (2024) Public Pensions and Private Savings	AEJ: Economic Policy	1985–2018 (annual); 2008–2017 (monthly)	40,042 individuals (analysis sample); 12,020 individuals (RD estimation sample)	Individual	Population registers (date of birth, demographics) Labour-market and income/asset registers (tax-reported bank and stock balances, property values, pension contributions) Monthly earnings register (eIncome / eIndkomst) Voluntary early retirement pension (VERP) contribution and benefit records
García-Miralles and Leganza (2024) Joint Retirement of Couples: Evidence from Discontinuities in Denmark	Journal of Public Economics	1986–2014 (age-based design 1991–2013; reform-based design 2008–2014)	367,585 couples and 2,206,044 couple-year observations (age-based sample); 10,321 couples and 73,395 couple-year observations (reform-based sample)	Individual	Danish administrative registers for the full population 1986–2014 (labour market outcomes, pension benefits, socio-demographics, family/couple links) Annual taxable earnings registers Monthly earnings records for all employees (eIndkomst/BFL) and monthly pension benefit records, from 2008 Voluntary early retirement pension (VERP) contribution records
Dahl et al. (2024) Understanding the Rise in Life Expectancy Inequality	Review of Economics and Statistics	2001–2014	–	Individual	Population registers (BEF, FAIN): sex and age Income register (IND): household income net of universal transfers Death registers (DODAARS, DODAASG) with cause of death US mortality by income from Chetty et al. (2016), IRS tax data
Bruze et al. (2024) The Long-Run Effects of Individual Debt Relief	Review of Economics and Statistics	Applications 1984–2003; register outcomes 1980–2019	46,571 individuals (final sample); 32,794 observations in the IV sample with 515 trustee identifiers	Individual	Hand-collected debt relief announcements from the official gazette Statstidende (court records), 1984–2005 Central Person Register (CPR) for linkage Income Tax Register: earned income, taxable assets and debt, real estate ownership Labour market status registers (employment status in November) Hourly wage measure from Statistics Denmark
Foerster (2024) Untying the Knot: How Child Support and Alimony Affect Couples' Dynamic Decisions and Welfare	Review of Economic Studies	1980–2013	322,732 couples (645,464 individuals) and 4,312,826 couple-year observations; DTUS 2,105 households	Individual	Danish register data on income, labour force status and hours worked Marital histories and birth register (BEF/family links) Maintenance (child support and alimony) payment records and child residence after divorce Danish Time Use Survey 2001 (DTUS)
Andersen et al. (2024) Spending Response to a Predictable Increase in Mortgage Repayments: Evidence from Expiring Interest-Only Loans	Review of Economics and Statistics	Mortgage registry 2009–2018; IO loans originated 2003–2007 expiring 2013–2017	46,025 household-year observations (baseline regressions); 8,813 households beginning amortization	Individual	Mortgage registry: loan-level data on the universe of Danish mortgages reported by mortgage institutions to Danmarks Nationalbank (from 2009) Income and wealth registers (IND/FORMUE): household income, bank deposits, stocks, bonds, pensions, debts Population/household registers (BEF): family composition, residence Imputed household consumption from income and wealth registers
Fluchtmann et al. (2024) The Gender Application Gap: Do Men and Women Apply for the Same Jobs?	AEJ: Economic Policy	September 2015–September 2017	105,879 individuals, 114,375 UI spells, 2,911,585 job applications	Individual	Joblog job application records from the public employment service platform (Jobnet) Unemployment insurance payment records / DREAM event-history data Integrated Database for Labour Market Research (IDA) Employment Statistics for Employees, monthly earnings and hours (BFL)
Fluchtmann et al. (2024) Unemployed Job Search across People and over Time: Evidence from Applied-For Jobs	Journal of Labor Economics	September 2015–September 2017	127,695 individuals (spells) and over 4 million applied-for jobs	Individual	Joblog applied-for job records (Danish Agency for Labour Market and Recruitment) DREAM event-history register of public transfers Integrated Database for Labour Market Research (IDA) Employment statistics for employees with hours and earnings (BFL) Firm purchases data (FIKS) Auxiliary survey of UI recipients on application coverage O*NET Related Occupation Matrix
Hasager (2024) Does Granting Refugee Status to Family-Reunified Women Improve Their Integration?	Journal of Public Economics	2001–2019 (hours and earnings from 2008)	1,349 adult women	Individual	Admission register on immigrant status and residence permit application/approval dates (Danish Immigration Service data via Statistics Denmark) Labour market data from the Danish tax authorities (employment; hours and earnings from 2008) Police registers on victimisation and criminal convictions Hospital admissions data (National Patient Register) for assault injuries Central population register (BEF) for demographics, spouse links and divorce
Jensen and Blundell (2024) Income Effects and Labour Supply: Evidence from a Child Benefits Reform	Journal of Public Economics	September 2008–December 2014 (monthly)	28,968 treated women and 22,477 treated men	Individual	Population register (BEF) for family composition, marital status and cohabitation Monthly payroll records with hours worked (BFL/eIndkomst) Child benefit payment records (BOBO/BOTI) Register OF (monthly demographics and parental leave status) Sterilisation consultations from the National Patient Register (LPRADM) and health insurance service registers (SYSI, SSSY) Annual income register (IND) for self-employment robustness
Foged et al. (2024) Comparing the Effects of Policies for the Labor Market Integration of Refugees	Journal of Labor Economics	1986–2008 refugee arrivals (outcomes followed up to 15 years; ALMP analysis January 2008–April 2019)	56,192 adult refugees	Individual	Admission Register (OPHG) Migration register (VNDS) Integrated Database for Labour Market Research (IDA) Income register (IND) Population register (BEF) Education register (UDDA) Family register (FAM)
Foged et al. (2024) Language Training and Refugees' Integration	Review of Economics and Statistics	Admissions 1997–2000; followed until 2016 (children's outcomes until 2018)	8,558 individuals; children sample of 9,730	Individual	Integrated Database for Labour Market Research (IDA) Income register (IND) Education enrollment and completion registers Crime register: charges and convictions Population register (BEF) Admission/residence permit register (OPHG) Migration register (VNDS) and internal mobility register (FLYT) Register for Labour Market Policy Measures (AMFORA) Danish language training database (Danskuddannelsesdatabasen) O*NET task intensities
Bargain and Jonassen (2024) New Evidence on Welfare's Disincentive for the Youth Using Administrative Panel Data	Review of Economics and Statistics	2000–2006	–	Individual	Danish administrative panel data on welfare benefit take-up, employment, earnings and crime (registers not named in abstract)
Altındağ et al. (2024) Public Health Policy at Scale: Impact of a Government-Sponsored Information Campaign on Infant Mortality in Denmark	Review of Economics and Statistics	Live births 1973–2006	568,106 births (SIDS outcome, MSE-optimal bandwidth of 52 months); 632,449 births for infant mortality (58 months)	Individual	Medical Birth Register (MFR): birth weight, gestational age, parity, maternal age, immigrant status Register of Causes of Death (exact date and cause of death) Education register (parental education)
Lundborg et al. (2024) On the Family Origins of Human Capital Formation: Evidence from Donor Children	Review of Economic Studies	IVF treatments 1994–2007; demographics 1991–2016; labour market 1991–2012; tests from 2010	19,509 non-donor IVF children, 820 sperm donor children and 157 egg donor children (97 matched to egg donors)	Individual	Danish IVF register (Danish Health Data Authority) Danish Education Register (UDDA) National test scores in reading and math (from 2010) Administrative registers on demographics and labour market (birth year, gender, marital status, children, earnings)
Jørgensen and Søgaard (2024) The Division of Parental Leave: Empirical Evidence and Policy Design	Journal of Public Economics	Births 2008–2015	189,974 births	Individual	Parental leave benefit spell data (parents of children born 2008–2015), incl. benefits paid to parent or employer Monthly earnings records for all employees (BFL/eIndkomst), from 2008 Danish administrative registers on demographics, family links and firm links (population and labour market registers)
Renkin and Züllig (2024) Credit Supply Shocks and Prices: Evidence from Danish Firms	AEJ: Macroeconomics	2005–2010	1,753 firms (213 linked to the PPI survey, 1,176 to export data)	Firm	Bank account-level loan and deposit reports to the Danish Tax Authority (firm part) Bank balance sheets from the Danish FSA (Finanstilsynet) and Danmarks Nationalbank monetary and financial statistics Producer Price Index survey microdata Customs export data for export unit values Firm register Accounting statistics (regnskabsstatistik) and VAT sales data
Akcigit et al. (2024) Tapping into Talent: Coupling Education and Innovation Policies for Economic Growth	Review of Economic Studies	2001–2013 (background data from 1980)	approximately 32 million employer-employee observations, 10,000 inventors and 37,000 unique PhDs; approximately 500,000 males with IQ data	Individual	Integrated Database for Labour Market Research (IDA) Firm-linked IDA (FIDA) PhD enrolment register (PHD) Military conscription IQ test (Boerge Prien Proeve) European Patent Office patents linked to IDA R&D funding data (Innovation Danmark) and Ministry of Education PhD policy data
Andersen et al. (2023) How Do Households Respond to Job Loss? Lessons from Multiple High-Frequency Datasets	AEJ: Applied Economics	January 2009–December 2016 (job losses July 2010–December 2015)	10,002 individuals (baseline sample of active bank customers); gross sample of 66,844 job losers	Individual	Danske Bank customer transaction and account records (spending, income inflows, balances, loans) Monthly payroll and income transfer records (BFL/eIndkomst) from the Danish Tax Agency Population register (BEF) household structure and spouse links End-of-year account-level bank loan and deposit records from the Danish Tax Agency Loan-level mortgage data from mortgage banks (via Statistics Denmark) Mass layoff notifications to the Danish Agency for Labour Market and Recruitment Annual income and wealth, education, home ownership and occupation registers
Dustmann et al. (2023) Neighbourhood Gangs, Crime Spillovers and Teenage Motherhood	Economic Journal	Refugee assignment 1986–1998; population registers 1980–2019	8,172 assigned refugee children; 3,792 girls in teenage motherhood estimation sample	Individual	Immigration register Annual population registers (BEF) Central Police Register (criminal charges and convictions) Education registers (including survey-based register of immigrants' education) Income registers and register-based labour force statistics (RAS) National Patient Register (abortions)
Crawley and Kuchler (2023) Consumption Heterogeneity: Micro Drivers and Macro Implications	AEJ: Macroeconomics	2003–2015	7.7 million observations from 2004 to 2015	Individual	Tax-authority income records (household after-tax and transfer income) Tax-reported wealth data: bank deposits, loans, bond and stock holdings, mortgages (year-end balances) Private pension contribution records Civil Registration System (CPR) family/household links Mortgage reset data (amount resetting over the following year)
Essen and Smith (2023) Network Connections and Board Seats: Are Female Networks Less Valuable?	Journal of Labor Economics	1995–2011	–	Individual + firm	Matched employer-employee data for the Danish labour market
Sigaard (2023) Estimating Labor Supply Responses to Danish Tax Reforms	Journal of Public Economics	2002–2016	10,755,733 observations	Individual	Wage Statistics Register (Lønstatistikken, LON) for performed hours of work Integrated Database for Labour Market Research (IDAN) for workplace controls Income registers (IND, INDK, INPI) for marginal tax rate simulation Population register (BEF) and family income register (FAIN) Family register (FAMILIE) Education register (UDDA) Danish tax simulation programs (Kleven and Schultz 2014, extended by the Ministry of Finance)
Hvidberg et al. (2023) Social Positions and Fairness Views on Inequality	Review of Economic Studies	Survey 2019 (income for 2017); register income histories	9,415 respondents (from 50,100 invited)	Individual	Custom online survey with randomised information treatment (February–March 2019), sent via Digital Post and linked on CPR Income registers / tax returns (IND) for respondents and all reference group members Population register (BEF) for cohort, municipality, neighbours and siblings Education register (UDDA) incl. school attended at age 15 for schoolmates Workplace links from employer-employee data (IDA) for co-workers and sector Parents' income positions via family links
Foged et al. (2023) Intergenerational Spillover Effects of Language Training for Refugees	Journal of Public Economics	Children born 1990–2001, followed up to 2019; parental outcomes 1999–2016	6,467 children; 5,197 adult parents	Individual	Danish administrative registers from Statistics Denmark on refugees' asylum/admission dates and parent–child links Lower secondary school completion and final exam records Criminal conviction records (property, violent, narcotics crime) Earnings, occupation (ISCO), disposable income, marriage and fertility registers for parents
Lentz et al. (2023) The Anatomy of Sorting: Evidence from Danish Data	Econometrica	1985–2013 (analysis panel starts 1987)	–	Individual + firm	Matched employer-employee register data (IDA) with annual wages Weekly labour market spell/mobility data built from Statistics Denmark registers
Cairo and Mahlstedt (2023) The Disparate Effects of Information Provision: A Field Experiment on the Work Incentives of Social Welfare	Journal of Public Economics	Intervention from 15 August 2018 with up to five monthly reminders	47,294 individuals	Individual	Field experiment assignment and messaging data (Danish public employment service, jobnet.dk online tool) Population registers (socio-demographic background) Benefit payment records (DREAM) Monthly income and employment records (eIndkomst/BFL) Public employment service data on sanctions, exemptions, collected working hours, click data and registered job applications
Friedrich (2022) Trade Shocks, Firm Hierarchies, and Wage Inequality	Review of Economics and Statistics	1999–2008	68,090 firm-year observations on 12,470 firms (within-firm inequality regressions)	Individual + firm	Integrated Database for Labour Market Research (IDA) with DISCO occupation codes Firm-Integrated Database for Labour Market Research (FIDA) Danish Business Register / firm statistics (GF): sales, value added, industry Foreign Trade Statistics Register: firm-level exports by CN8 product and destination (UHDI) UN Comtrade bilateral trade flows (HS6) U.S. Imports of Merchandise, Penn World Tables distances, Brent oil prices (transport cost estimation)
Labanca and Pozzoli (2022) Constraints on Hours within the Firm	Journal of Labor Economics	2003–2011	more than 400,000 employees and approximately 8,300 firms (787,683 individual-year observations)	Individual + firm	Integrated Database for Labour Market Research (IDA) Wage statistics with annual regular and overtime hours (Lønstatistikken, LON) Firm Statistics Register (Firmstat) Danish Foreign Trade Statistics Register Firm-Integrated Database for Labour Market Research (FIDA) Danish Tax Register (income tax records) O*NET occupational data
Druedahl and Martinello (2022) Long-Run Saving Dynamics: Evidence from Unexpected Inheritances	Review of Economics and Statistics	1995–2012	6,286 heirs	Individual	Wealth data from yearly third-party financial institution reports in the income/wealth registers (IND/FORMUE: BANKAKT, KURSANP, etc.) Individual tax returns / Income register (IND) for disposable income Housing and land registers (property values, number of housing units) Birth registers / parent-child links (BEF) Mortality register / Register of Causes of Death (ICD-10 cause of death)
Jakobsen and Søgaard (2022) Identifying Behavioral Responses to Tax Reforms: New Insights and a New Approach	Journal of Public Economics	Data since 1980; main analyses 1999–2012 (2004 reform: 1999–2003 pre-period, 2003–2007 reform period; 2009–10 reform: 2004–2008 pre-period, 2008–2012 reform period); 1987 and 1994 reforms in appendix	over 2,000,000 individuals per period (2,240,332 and 2,295,922 for the 2004 reform pre-reform and reform periods; 2,097,862 and 2,240,833 for the 2009–10 reform)	Individual	Danish administrative registers for the full population since 1980 (labour market history, education, earnings, demographics) Third-party reported income tax records Simulated marginal tax rates from an extended Danish tax simulator (Kleven and Schultz 2014 model)
Gillingham et al. (2022) Equilibrium Trade in Automobiles	Journal of Political Economy	1996–2008 (estimation 1997–2008)	nearly 39 million observations on car ownership transitions	Individual	Car ownership register covering all privately owned cars (Statistics Denmark extract) Odometer readings from mandatory vehicle inspections (driving) Demographic and income registers for all Danish households Tax deduction for commuting distance (work distance) Fuel prices from eof.dk
Daysal et al. (2022) Spillover Effects of Early-Life Medical Interventions	Review of Economics and Statistics	Focal children born 1982–1993; test scores 2001–2010	5,827 sibling observations (siblings of 3,677 focal children)	Individual	Medical Birth Register (MFR): birth weight, gestational age, parity Parent and sibling links (BEF) 9th-grade exam test score register (reading and math) Education/enrollment registers Prescription drug register (antidepressant use, from 1995) Health registers for diagnoses (intellectual disability, ADHD) and mortality Income and labour market registers for parents
Andersen et al. (2022) Reference Dependence in the Housing Market	American Economic Review	2009–2016 (transactions from 1992)	214,103 listings (191,507 unique households, 178,933 unique properties); housing stock of 5,538,052 observations of 807,345 properties	Individual	Property ownership and transaction register from SKAT and the Building and Housing Register (BBR), 1992–2016 Tax-assessed property values (SKAT) Property listings data from RealView, 2008–2016 Loan-level mortgage data from Danmarks Nationalbank, 2009–2016 Civil Registration System (CPR/BEF) for demographics and household links Income and wealth records from SKAT (IND/formue)
Keller and Utar (2022) Globalization, Gender, and the Family	Review of Economic Studies	1999–2007	about 1,600,000 workers; about 10,000 textile and clothing workers	Individual + firm	Integrated Database for Labour Market Research (IDA) Central Population Register (CPR/BEF) for births, marriages, divorces and cohabitation Domestic production database by 10-digit product (Industrial commodity statistics, VARS) to identify firms making quota goods Industry-level imports from China and other advanced countries (instrument) Parental leave records
Anker et al. (2021) The Effects of DNA Databases on the Deterrence and Detection of Offenders	AEJ: Applied Economics	Charges June 2003–September 2007 (excluding June–September 2005), with follow-up outcomes	38,674 individuals with 66,911 charge observations	Individual	Central Charge Register (crime date, charge date, crime type) Danish Central DNA Database person-specific section (DNA registration records) Conviction records (crime registers) Full-population registers on demographics, labour market and family links
Friedrich and Hackmann (2021) The Returns to Nursing: Evidence from a Parental-Leave Program	Review of Economic Studies	1990–2000	–	Individual + firm	Integrated Database for Labour Market Research (IDA) for health workers, plants and industries Population register (BEF) for children's ages, residence and household characteristics Social benefits records of parental leave spells (from 1995) National Patient Register (LPR), inpatient hospitalisations 1990–2000 Register of Causes of Death (DAR), 1991–2000
Dustmann and Landersø (2021) Child's Gender, Young Fathers' Crime, and Spillover Effects in Criminal Behavior	Journal of Political Economy	Children born 1991–2004; crime data from 1990	2,803 first-time fathers aged 20 or younger; 101,132 male peers in 2,114 neighbourhoods	Individual	Birth register (child's gender, parent links) Population register (BEF) for demographics and family links Central Police Register crime data (charges and convictions) Victim register (from 2001) Income, education and occupation registers Residential register with neighbourhood classification
Kleven et al. (2021) Does Biology Drive Child Penalties? Evidence from Biological and Adoptive Families	AER: Insights	1980–2017	around 527,000 first births (biological sample) and around 4,600 first arrivals (adoptive sample)	Individual	Statistics Denmark administrative registers covering the full population 1980–2017, linked with family identifiers Adoption registry of Statistics Denmark (1988–2009), augmented with foreign adoptions identified via country of origin and Central Person Register immigration records Earnings and labour-supply registers incl. hours from the ATP mandated pension scheme Education registers
Fadlon and Nielsen (2021) Family Labor Supply Responses to Severe Health Shocks: Evidence from Danish Administrative Records	AEJ: Applied Economics	1980–2011 (shocks 1985–2011)	310,720 treated and 409,190 control households (fatal shocks); 37,437 treated and 54,887 control households (non-fatal heart attacks and strokes)	Individual	Cause of Death Registry National Patient Registry (LPR) hospitalisation records with ICD diagnoses Income and transfer registers (earnings, government transfers, pension and annuity payouts, capital income), 1980–2011 Third-party reported liquid wealth balances, 1984–2011 Integrated Database for Labour Market Research (IDA), incl. ATP-based full-/part-time employment Household linkages of spouses and cohabiting partners (population registers)
Bagger et al. (2021) Education, Birth Order and Family Size	Economic Journal	1980–2006 (outcomes measured in 2006)	1,256,031 children in 581,159 families (excluding single-child families)	Individual	Integrated Database for Labour Market Research (IDA), 1980–2006, with mother-child links Precise date of birth from Statistics Denmark (to identify twin/multiple births)
Gruber et al. (2021) Do People Respond to the Mortgage Interest Deduction? Quasi-Experimental Evidence from Denmark	AEJ: Economic Policy	1980–2011 (main panel 1980–1996)	about 40 million individual-year observations; 34,440,869 observations in the main homeownership regression (below-top controls)	Individual	Income tax records (incomes, taxes, deductible interest expenses) Housing register (homeownership, property characteristics, home size) Tax authority property value appraisals (for imputed rent and wealth tax) Population registers with spouse/cohabitant and child links
Simonsen et al. (2021) Spot Price Biases in Non-Linear Health Insurance Contracts	Journal of Public Economics	–	–	Individual	Population-wide individual data on prescription drug purchases and reimbursement under the Danish non-linear drug insurance scheme (registers not named in the abstract)
Daysal et al. (2021) Home Prices, Fertility, and Early-Life Health Outcomes	Journal of Public Economics	1992–2011 (fertility analysis 1995–2006)	1,105,559 observations on 198,435 women (125,903 births)	Individual	Medical Birth Register (MFR) National Patient Register (LPR) State's Sales and Valuation Registry (public property valuations and sales prices) Population register (BEF) and other registers for demographics, education, household income and partner status
Bingley et al. (2021) Family, Community and Long-Term Socio-Economic Inequality: Evidence from Siblings and Youth Peers	Economic Journal	Men born 1960–1983; earnings 1984–2011	695,960 men; 10,930,859 earnings observations (122,652 brother pairs, 380,948 singletons)	Individual	Civil registration system / population register with parent links (BEF) Central person register address histories (parish of residence) Education register / national pupil database (school at age 15) Annual earnings from tax-based income registers
Black et al. (2021) Sibling Spillovers	Economic Journal	Danish births 1990–2001; Florida births 1994–2002	Denmark: 134,277 families with first two children observed, 28,581 families with first three children (4,430 with a disabled third child by age five); Florida: 80,879 and 9,987 families	Individual	Medical Birth Register (MFR) National Patient Register (LPR) for disability diagnoses 9th grade exit exam grades (school/education registers) Parental education, labour market, earnings and leave registers Florida birth records linked to Florida public school records (FCAT)
Andersen et al. (2021) Gender Differences in Negotiation: Evidence from Real Estate Transactions	Economic Journal	1994–2013	337,685 real estate transactions (97,216 in repeated-sales sample; 13,953 inherited houses and apartments in death-sales sample)	Individual	Property transactions from the Danish Tax and Customs Administration (SKAT) Housing register (BBR) Civil Registration System (CPR) Income and tax-assessed property values from SKAT Education registers (Ministry of Education) Integrated Database for Labour Market Research (IDA) employment status Cause-of-Death Register (Danish National Board of Health)
Olney and Pozzoli (2021) The Impact of Immigration on Firm-Level Offshoring	Review of Economics and Statistics	1995–2011	approximately 35,000 firms and 1 million workers	Individual + firm	Firm Statistics Register (FirmStat) Integrated Database for Labour Market Research (IDA) Firm-Integrated Database for Labour Market Research (FIDA) Foreign Trade Statistics Register: Intrastat and Extrastat firm-level imports (UHDI) Central Business Register (foreign ownership)
Brenøe and Zölitz (2020) Exposure to More Female Peers Widens the Gender Gap in STEM Participation	Journal of Labor Economics	High school entry 1980–1994; outcomes followed up to 20 years after entry	182,211 students in 127 schools (1,877 school-cohort observations)	Individual	Student/education registers with high school, track and cohort identifiers (UDDA) Population register with parental links (BEF) Parental income and education registers (IND, UDDA) Earnings and employment registers Occupation codes (STEM occupations) Fertility from population/birth registers
Taber and Vejlin (2020) Estimation of a Roy/Search/Compensating Differential Model of the Labor Market	Econometrica	1985–2003	2,969,454 workers, 25,630,532 spells and 467,983 establishments (estimation sample)	Individual + firm	Weekly labour market spell data built from Statistics Denmark registers (all individuals aged 15–74) Integrated Database for Labour Market Research (IDA) with hourly wage measure Danish Work Environment Cohort Study surveys (1995 and 2000) on reasons for job separation
Kreiner et al. (2020) Do Lower Minimum Wages for Young Workers Raise Their Employment? Evidence from a Danish Discontinuity	Review of Economics and Statistics	January 2012–December 2015	577,795 individuals and around 14 million person-month observations	Individual	Monthly payroll records from the tax agency SKAT (BFL/eIndkomst) with wages and hours Population register data at Statistics Denmark (age/birth date, parental background) School performance and job information from Statistics Denmark registers
Kreiner et al. (2020) Financial Trouble Across Generations: Evidence from the Universe of Personal Loans in Denmark	Economic Journal	2004–2011	28,027,610 parent-child-year observations on 2,501,088 individuals	Individual	Loan register from the Danish Tax Agency (SKAT): all personal loan accounts with default status (60+ days late) Population register (BEF) for parent-child links Income-tax register and other administrative registers on labour market history, income and wealth Credit bureau bad-payer files (Experian, Debitor Registret), 2009 snapshot Survey of 1,748 individuals on risk willingness, patience and impulsivity (2014)
Jakobsen et al. (2020) Wealth Taxation and Wealth Accumulation: Theory and Evidence from Denmark	Quarterly Journal of Economics	Wealth data since 1980; quasi-experimental panel 1985–1996	138,384 observations (ceiling DD) and 520,452 observations (couples DD, couples vs couples)	Individual	Administrative wealth registry (third-party reported assets and debts, since 1980) Income registers and socio-economic registers (occupation, family composition)
Rossin-Slater and Wüst (2020) What Is the Added Value of Preschool for Poor Children? Long-Term and Intergenerational Impacts and Interactions with an Infant Health Intervention	AEJ: Applied Economics	Cohorts born 1930–1957; outcomes 1980–2012; children born 1955–1987	1,640,214 observations (Danish-born with valid parish codes); 880,708 observations in municipalities with an approved preschool by 1960, collapsed to 3,862 municipality × birth-year cells	Individual	Archival data on all approved Danish preschools 1933–1960 (establishment and approval year, slots) Nurse Home Visiting program implementation dates by municipality Statistical Commune Data Archive (elections and censuses) for municipality controls Municipal live births and infant deaths DigDag historical administrative geography (parish-municipality mapping) Administrative population register data 1980–2012 (education, earnings, survival, hospital admissions, diagnoses) Mother-child links (Danish Civil Registration System)
Agersnap et al. (2020) The Welfare Magnet Hypothesis: Evidence from an Immigrant Welfare Scheme in Denmark	AER: Insights	1980–2017	444 group-year observations (12 welfare benefit groups)	Individual	Danish administrative registers on the full population 1980–2017 (immigrant status, country of origin, demographics, family links) Residence permit data by permit type (asylum, family, work/study; available from 1997) Central Person Register (CPR) migration records National statistics bureaus of other Nordic countries and OECD International Migration Database (1991–2017)
Bingley et al. (2020) The Opportunity Costs of Mandatory Military Service: Evidence from a Draft Lottery	Journal of Labor Economics	Birth cohorts 1976–1983; earnings at ages 25–35	152,269 men without missing earnings (military register covers 155,570 fit-for-service conscripts)	Individual	Danish Defence military register (Armed Forces Day draft records: IQ test, eligibility, height, lottery number) Earnings from employer reports to tax authorities (income registers) Education registers (UDDA) Central Crime Register National hospital discharge register (LPR) Medical Birth Register (MFR) birth weight Population register (BEF)
Breining et al. (2020) Birth Order and Delinquency: Evidence from Denmark and Florida	Journal of Labor Economics	Danish birth cohorts 1981–1990; Florida births 1994–2002	Denmark: 121,100 children in 60,550 families (first- and second-born boys); 448,979 singleton births 1981–1990 in the full Danish population	Individual	Medical Birth Register (MFR) Population register with parent and sibling links (BEF) Central Crime Register (convictions, sentences, incarceration) School registers (9th grade exit exam grades) Register of Daycare Institutions National Patient Register (LPR) and Psychiatric Central Register Parental education, employment, earnings and maternity leave registers Florida birth records linked to school and juvenile justice records
Andersen et al. (2020) Sources of Inaction in Household Finance: Evidence from the Danish Mortgage Market	American Economic Review	2009–2017	2,376,815 household observations (9,351,183 household-quarters); 378,421 refinancings	Individual	Loan-level mortgage data for all Danish mortgages from Danmarks Nationalbank (via mortgage bank associations) Civil Registration System / population register (CPR/BEF) for demographics and household links Income and wealth data from the Danish Tax Authority (SKAT) (IND/formue) Education register (UDDA)
Epper et al. (2020) Time Discounting and Wealth Inequality	American Economic Review	Experiment in 2015; register data 1980–2015 (wealth ranks tracked 2001–2015)	3,620 experiment participants (of 27,613 invited); 2,548 survey subjects in the 1952–1955 cohorts	Individual	Incentivised online convex time budget experiment (February 2015) linked on CPR Income and wealth registers based on third-party reports (1980–2015) Population register (BEF) for sampling and demographics Education and family registers Survey of time discounting for the 1952–1955 cohorts at ages 18–21
Alstadsæter et al. (2019) Tax Evasion and Inequality	American Economic Review	HSBC leak 2006–2007; amnesties since 2006; Danish random audits for tax years 2008, 2010, 2012	520 HSBC households; 165 Panama Papers households; 1,422 amnesty taxpayers in Norway and 6,811 in Sweden; 18,985 randomly audited Danish taxpayers	Individual	Leaked HSBC Switzerland client list (Swiss Leaks, 2007) matched to tax records in Denmark, Norway and Sweden Panama Papers / Mossack Fonseca leak matched to Norwegian and Swedish wealth data (not Denmark) Tax amnesty voluntary disclosures in Norway and Sweden Population-wide administrative wealth and income tax records for Norway, Sweden and Denmark Danish stratified random tax audits by SKAT (tax years 2008, 2010, 2012) National accounts household wealth totals
Dustmann et al. (2019) Refugee Migration and Electoral Outcomes	Review of Economic Studies	Refugee allocation 1986–1998; parliamentary elections 1990–98 and municipal elections 1989–97	275 municipalities (550 observations for parliamentary elections); 76,673 refugees allocated 1986–98	Individual	Population register (BEF) to identify refugees and municipality of initial placement Income, education, labour force and socio-economic registers for 1985 municipality characteristics Statistics Denmark municipal and parliamentary election results Danish National Election Survey (DNES) 1990–98
Kreiner et al. (2019) Liquidity Constraint Tightness and Consumer Responses to Fiscal Stimulus Policy	AEJ: Economic Policy	1998–2009 registers; account-level data 2007–2009; survey January 2010	5,037 completed interviews with respondents who took out the SP balance	Individual	Telephone survey of SP account holders on spending of the 2009 SP payout (Epinion, January 2010) ATP register of Special Pension (SP) savings accounts (balances on 1 May 2009) Income tax register with incomes, assets and liabilities, 1998–2009 Account-level deposit and loan records with interest payments from the Danish Tax Agency (SKAT), 2007–2009 Demographic registers (Statistics Denmark)
Giorgi et al. (2019) Consumption Network Effects	Review of Economic Studies	1980–1996	757,439 households	Individual + firm	Administrative income and wealth tax records (tax registry incl. wealth tax data) Integrated Database for Labour Market Research (IDA) for plant IDs and coworker networks Danish Expenditure Survey (DES) 1994–1996
Kleven et al. (2019) Children and Gender Inequality: Evidence from Denmark	AEJ: Applied Economics	1980–2013 (with data back to 1964 for intergenerational transmission); first births 1985–2003	around 470,000 births or 15,040,000 individual-year observations	Individual	Full-population Danish administrative registers linked by personal ID (earnings, labour supply, occupation, firm, education), 1980–2013 Family and generational links (population register) ATP pension contributions as third-party measure of hours worked Additional administrative data back to 1964 for intergenerational analysis Matched employer-employee data (firm family-friendliness) International Social Survey Program (ISSP) 2002 for gender attitudes
Fadlon and Nielsen (2019) Family Health Behaviors	American Economic Review	1980–2011 (shocks between 1985 and 2011)	Non-fatal shocks, spouses: 20,381 treated and 28,699 control (prime age 25–55), 37,828 treated and 36,392 control (older 55–85); biological children: 63,323 treated and 68,437 control (25–40), 39,783 treated and 32,926 control (40–65)	Individual	Prescription Drug Database (LMDB), 1995–2011 Health Insurance Registry (SSR, primary-care and specialist contacts), 1985–2011 National Patient Registry (LPR), inpatient 1980–2011 and outpatient 1994–2011 Cause of Death Registry (DAR) Integrated Database for Labour Market Research (IDA) for demographics, education and coworker links Family links (spouses, parents–children) from population registers
Søgaard (2019) Labor Supply and Optimization Frictions: Evidence from the Danish Student Labor Market	Journal of Public Economics	2006–2011 (monthly earnings from 2008)	around 75,000 observations per year (core sample 75,500 individuals per year on average)	Individual	Danish administrative registers for the full population (education, earnings, benefits, demographics) Annual income tax returns Monthly student benefit (SU) take-up records from the Student Benefit Administration Monthly payroll records of earnings and hours (BFL/eIndkomst), from 2008
Bagger and Lentz (2019) An Empirical Model of Wage Dispersion with Sorting	Review of Economic Studies	1994–2003 (spell data available 1985–2003)	6,815,884 observations; 782,951 individuals; 1,698,990 job spells; 117,847 firms (NBER 2014 version)	Individual + firm	Weekly labour market spell data from administrative registers (jobs reported to tax authorities, public transfers, mandatory pension contributions) Integrated Database for Labour Market Research (IDA): education, hourly wages and firm sector
Bingley and Cappellari (2019) Correlation of Brothers' Earnings and Intergenerational Transmission	Review of Economics and Statistics	1980–2014	303,231 men in 101,077 families; 5,488,445 earnings observations	Individual	Civil registration system / population register with parent-child links (BEF) Income Statistics Register (IND): annual pre-tax labour earnings from tax returns
Traiberman (2019) Occupations and Import Competition: Evidence from Denmark	American Economic Review	1996–2007 worker panel (tenure built from 1990–1996); import competition 1995–2005	18,513,301 observations in sample frame (33,502,593 in raw data)	Individual + firm	Integrated Database for Labour Market Research (IDA/IDAS) with ISCO occupation codes Firm and establishment statistics (FIRE, FIRM) for industry codes Customs trade data (UHDI) UN Comtrade (CEPII BACI), Danish national accounts, Danish CPI, LIBOR
Frederiksen and Kato (2018) Human Capital and Career Success: Evidence from Linked Employer-Employee Data	Economic Journal	1992–2002 (appointments in 2000 and 2001)	773,094 observations (3,813 appointed to top management)	Individual + firm	Integrated Database for Labour Market Research (IDA) with DISCO occupation codes Education registers
Utar (2018) Workers beneath the Floodgates: Low-Wage Import Competition and Workers' Adjustment	Review of Economics and Statistics	1999–2010	10,521 workers	Individual + firm	Integrated Database for Labour Market Research (IDA): person, establishment and job files Firm-Integrated Database for Labour Market Research (FIDA) employer-employee link Domestic manufacturing production database (VARES), CN 8-digit products EU SIGL database of MFA import quotas (European Commission)
Munch and Schaur (2018) The Effect of Export Promotion on Firm-Level Performance	AEJ: Economic Policy	–	–	Firm	Danish Trade Council data on export promotion services (self-selected vs. Council-approached firms) Danish firm-level performance data (sales, value added, employment); specific registers not stated in abstract
Joensen and Nielsen (2018) Spillovers in Education Choice	Journal of Public Economics	High school entry cohorts 1984–1987 (older siblings) and 1988–1991 (younger siblings, main sample); register data from 1980 onwards	7,786 sibling pairs (main closely spaced sample); 17,691 sibling pairs in the wider sample with age gap < 10 years	Individual	Danish administrative registers on high school enrolment, course packages and completion (Statistics Denmark education registers) Parent and sibling links from population registers Parental education and income registers Earnings registers (younger siblings' earnings at ages 30–35)
Rossin-Slater and Wüst (2018) Parental Responses to Child Support Obligations: Evidence from Administrative Data	Journal of Public Economics	1998–2010 (separation years 1999–2008)	73,303 fathers (71,575 unique mothers)	Individual	Danish administrative registers on children born 1985–2008 linked to parents and siblings (population/family registers) Income and tax records including tax-deductible child support payments Labour market registers (employment, earnings, disability insurance, early retirement) Birth records (fertility through 2010) Education registers Danish Longitudinal Survey of Children (DALSC) and Children and Youth in Denmark (CYD) survey (descriptive, supplementary)
Gautier et al. (2018) Estimating Equilibrium Effects of Job Search Assistance	Journal of Labor Economics	Benefit inflows November 2004–February 2005 (pre-experiment) and November 2005–February 2006 (experiment), followed up to two years; vacancies January 2004–November 2007	40,403 benefit claimants in experiment period (3,751 experiment participants: 1,814 treated, 1,937 controls); 49,063 in pre-experiment sample	Individual	National Labour Market Board administrative data on unemployment benefit spells (all Danish counties) Randomised activation experiment assignment (Storstrøm and South Jutland, birth date 1st–15th of month) Income transfer data (exit destinations) National Labour Market Board monthly stock of open vacancies by county (from local job centres)
Boserup et al. (2018) Born with a Silver Spoon? Danish Evidence on Wealth Inequality in Childhood	Economic Journal	1983–2011	Pooled cross-section: on average close to 650 thousand observations per one-year age group; panel regressions: 36,102 observations	Individual	Individual wealth data from tax return records (Danish Tax Agency SKAT, via Statistics Denmark) Population register with parent identifiers (BEF) Education and income registers
Hjort et al. (2017) Universal Investment in Infants and Long-Run Health: Evidence from Denmark's 1937 Home Visiting Program	AEJ: Applied Economics	Birth cohorts 1935–1949; outcomes 1980–2012	876,912 individuals, collapsed to 20,078 municipality × birth cohort × treatment-status cells	Individual	Archival records of home visiting program implementation dates by municipality, 1937–1949 (Danish National Archives) Danish Commune Archive / Statistical Commune Data Archive (pre-1937 municipal characteristics from censuses and elections) Medical Reports for the Kingdom of Denmark (1936 infant mortality by medical district) Administrative population data with date and parish of birth (cohorts 1935–1949) Danish Inpatient Register / National Patient Register (LPR), 1980–2012 Danish Death Register (cause of death), 1980–2012 DigDag historical administrative geography
Bingley and Martinello (2017) Measurement Error in Income and Schooling and the Bias of Linear Estimators	Journal of Labor Economics	–	–	Individual	Survey of Health, Ageing and Retirement in Europe (SHARE), Danish respondents Danish administrative income registers Danish administrative education registers
Lundborg et al. (2017) Can Women Have Children and a Career? IV Evidence from IVF Treatments	American Economic Review	1991–2009 (IVF treatments 1995–2005)	18,538 treated women	Individual	IVF register held by the Danish National Board of Health (all IVF treatments in public and private clinics, 1994–2005) Linked administrative registers on education, age, marital status and number of children Linked labour market registers: labour force status, hours worked, hourly wages, annual earnings, occupation, sector and firm
Landersø et al. (2017) School Starting Age and the Crime-Age Profile	Economic Journal	Children born mid-1981 to mid-1993	48,546 and 50,383 children (the two gender groups) at age 15, born in December or January (Table 1)	Individual	Population register with exact birth dates and parent links (BEF) Criminal charge register (charges for property, violence and other crimes, with dates) Birth records: birth weight, gestational length, APGAR score (likely Medical Birth Register, MFR; not named in paper) Education registers (age in 8th grade as proxy for school starting age) Parental education and labour market registers
Jensen and Johannesen (2017) The Consumption Effects of the 2007–2008 Financial Crisis: Evidence from Households in Denmark	American Economic Review	2003–2011	around 440,000 individuals, almost 3.5 million individual-years and more than 5.7 million individual-account-years	Individual	Tax authority third-party reports of all individuals' loan and deposit account balances, linked to bank identity via branch numbers (Nets lists) Bank balance sheet data from the Danish Central Bank (MFI statistics) Administrative registers on demographics, education, labour market and income Income and wealth registers (capital income, social transfers, stock portfolios, pension accounts) Motor vehicle register and real estate register
Kreiner et al. (2016) Tax Reforms and Intertemporal Shifting of Wage Income: Evidence from Danish Monthly Payroll Records	AEJ: Economic Policy	January 2008–December 2011 (monthly)	328,679 individuals, of which 219,179 in the treatment group; survey sample of 878 taxpayers	Individual + firm	Monthly payroll records (eIndkomst / eIncome register) from the tax agency SKAT Background registers on individuals and firms at Statistics Denmark (incl. firm size, liquid assets) Telephone survey on awareness of income-shifting opportunity (January 2011), merged to eIncome register
Fadlon et al. (2016) Do Employer Pension Contributions Reflect Employee Preferences? Evidence from a Retirement Savings Reform in Denmark	AEJ: Applied Economics	1996–2001	2,020,705 worker-year observations; 84,764 workplace-year observations (26,775 unique workplaces)	Individual + firm	Income tax register (incl. third-party reported pension contributions) Population register (BEF) Integrated Database for Labour Market Research (IDA)
Joensen and Nielsen (2016) Mathematics and Gender: Heterogeneity in Causes and Consequences	Economic Journal	High school entrants 1984–1986, followed into the labour market	about 25,658 females and 19,406 males from about 140 high schools	Individual	Education registers: detailed educational histories, high school branch choice and GPA (Statistics Denmark) Labour market registers: earnings, occupation, industry, self-employment, part-time work
Foged and Peri (2016) Immigrants' Effect on Native Workers: New Analysis on Longitudinal Data	AEJ: Applied Economics	1991–2008	1,864,027 observations of employed low-skilled natives, 1995–2008, in the fixed-effects panel (20 percent random sample of natives); balanced-panel difference-in-differences regressions use 71,053 natives employed in 1994	Individual	Integrated Database for Labour Market Research (IDA) Occupation codes linked to O*NET task intensities (manual, communication, cognitive) Full population registers for municipality immigrant shares Refugee spatial dispersal policy 1986–1998 (initial refugee allocation by municipality)
Kreiner et al. (2015) Taxation and the Long Run Allocation of Labor: Theory and Danish Evidence	Journal of Public Economics	2004–2006 (base year 2005)	126,400 workplaces employing 1.4 million workers	Individual + firm	Integrated Database for Labour Market Research (IDA) Wage Statistics Register (Lønstatistikken) for hours-adjusted wages (robustness) Empirical effective marginal tax rate schedule for 2006 from Kleven and Kreiner (2006)
Bruze et al. (2015) The Dynamics of Marriage and Divorce	Journal of Labor Economics	1980–2006 (ages 20 to 46)	61,780 individuals (31,835 men and 29,945 women)	Individual	Population register with marital and cohabitation histories (BEF) Education registers (UDDA), completed education at age 46
Damm and Dustmann (2014) Does Growing Up in a High Crime Neighborhood Affect Youth Criminal Behavior?	American Economic Review	1980–2006	4,425 children	Individual	Central Police Register: crime charges and convictions for the full population Administrative registers: age, residence, parents' IDs, country of origin, immigrant status and date of immigration Educational Institution Register and surveys Municipality-level crime and socio-economic measures built from the registers
Hummels et al. (2014) The Wage Effects of Offshoring: Evidence from Danish Matched Worker-Firm Data	American Economic Review	1995–2006 (trade data 1990–2006)	about 1.95 million worker-firm-year and 9,800 firm-year observations	Individual + firm	Firm Statistics Register (FirmStat/FIRM) Integrated Database for Labour Market Research (IDA) Firm-worker link (FIDA) Foreign Trade Statistics Register, Extrastat and Intrastat (UHDI) UN COMTRADE world trade data for instruments Firm accounts and other firm registers (Data Appendix)
Utar (2014) When the Floodgates Open: Northern Firms' Response to Removal of Trade Quotas on Chinese Goods	AEJ: Applied Economics	1995–2007	1,090 unique textile and clothing firms (875 firms, 1995–2005, for the product-portfolio analysis)	Individual + firm	Integrated Database for Labour Market Research (IDA) Firm accounting statistics (Regnskabsdata / FIRE) International trade data from customs records (Udenrigshandel / UHDI) Domestic production/sales by product (Varestatistik / VARES), 1995–2005 EU SIGL textile and clothing quota licence database
Kleven and Schultz (2014) Estimating Taxable Income Responses Using Danish Tax Reforms	AEJ: Economic Policy	Data since 1980; tax simulator and estimation 1984–2005 (three-year intervals 1984–1987 to 2002–2005)	about 37 million observations (stacked three-year differences; about 49 million before sample restrictions)	Individual	Income Tax Register (tax return information) Integrated Database for Labour Market Research (IDA) Authors' own tax simulator of the Danish tax system, 1984–2005
Kleven et al. (2014) Migration and Wage Effects of Taxing Top Earners: Evidence from the Foreigners' Tax Scheme in Denmark	Quarterly Journal of Economics	1980–2010 (tax data since 1980; scheme introduced 1992)	–	Individual	Administrative tax and payroll records for all residents (income tax register) Civil registration (CPR) citizenship and migration records with dates of entry and exit Foreigners' tax scheme beneficiary records (contract start and end dates) Employer links at firm and establishment level with industry
Bagger et al. (2014) Tenure, Experience, Human Capital, and Wages: A Tractable Equilibrium Search Model of Wage Dynamics	American Economic Review	1985–2003	168,649, 320,638 and 66,155 workers (2,534,203, 4,344,288 and 663,362 observations) in the three education groups	Individual + firm	Weekly labour market spell data built from administrative registers (employment, unemployment, non-participation, self-employment, retirement) Integrated Database for Labour Market Research (IDA): hourly wages, education, experience, ownership ATP pension contributions used to measure actual experience since 1964 Firm accounts survey (Accounts Statistics) 1999–2003 with value added and hours
Chetty et al. (2014) Active vs. Passive Decisions and Crowd-Out in Retirement Savings Accounts: Evidence from Denmark	Quarterly Journal of Economics	1995–2009	approximately 41 million observations for 4 million individuals	Individual	Income tax register with third-party reported earnings and pension contributions (IND) Third-party reported wealth: end-of-year assets and liabilities in taxable accounts Population register (BEF) Integrated Database for Labour Market Research (IDA)
Dahl et al. (2013) Wage Dispersion and Decentralization of Wage Bargaining	Journal of Labor Economics	1992–2001	about 1.14 million worker-year observations (1,137,367)	Individual + firm	Integrated Database for Labour Market Research (IDA), matched employer-employee data Income register (tax files) Supplementary Pension Fund (ATP) contributions for hours worked DA/LO bargaining-segment classification by NACE industry and DISCO occupation (Confederation of Danish Employers)
Maire and Schjerning (2013) Tax Bunching, Income Shifting and Self-Employment	Journal of Public Economics	–	–	Individual	Tax records of Danish self-employed individuals (taxable income, retained earnings)
Browning et al. (2013) Housing Wealth and Consumption: A Micro Panel Study	Economic Journal	1987–1996	–	Individual	Administrative income and wealth (tax) registers for a 10% random sample of the Danish population aged 16+ House price / housing wealth information from registers
Ejrnæs and Hochguertel (2013) Is Business Failure Due to Lack of Effort? Empirical Evidence from a Large Administrative Sample	Economic Journal	1981–1998	13,434 individuals and 86,092 observations (estimation sample)	Individual	CAM 10% Sample: 10% random sample of the Danish population aged 16+ (linked administrative registers incl. tax and benefit records) Unemployment insurance fund membership records
Bingley et al. (2013) Unemployment Insurance, Wage Dynamics and Inequality Over the Life Cycle	Economic Journal	1980–2003	roughly 810,000 individuals, about 12.5 million person-year observations	Individual	Administrative register data on the Danish labour force (Statistics Denmark): annual labour earnings and hours-derived hourly wages UI fund membership contributions reported to tax authorities Mandatory pension contributions (ATP) for year of labour market entry
Stoyanov and Zubanov (2012) Productivity Spillovers Across Firms through Worker Mobility	AEJ: Applied Economics	1995–2007	173,929 firm-year observations (about 5.8 million worker-year observations, 668,034 job changers); benchmark regressions use 74,507 and 61,112 firm-year observations	Individual + firm	Matched employer-employee data from Statistics Denmark (worker records from 1983, ages 15–65) Manufacturing firm-level accounts data with sales, value added, materials, capital and investment, 1995–2007
Kleven et al. (2011) Unwilling or Unable to Cheat? Evidence from a Tax Audit Experiment in Denmark	Econometrica	2006–2007 income years (2007 and 2008 filing seasons)	25,020 employees and 17,764 self-employed	Individual	Randomized tax audit experiment implemented by the Danish tax authority (SKAT) SKAT Business Object Database: third-party information reports, pre-populated returns, filed returns and after-audit returns, item by item SKAT computer-generated audit flags Basic socio-economic variables and employer industry/size from SKAT records
Chetty et al. (2011) Adjustment Costs, Firm Responses, and Micro vs. Macro Labor Supply Elasticities: Evidence from Danish Tax Records	Quarterly Journal of Economics	1994–2001	17.9 million observations of wage earners (6.8 million within DKr 50,000 of the top tax cutoff; 1.8 million self-employed observations)	Individual + firm	Income tax register / Income Statistics Register (IND) Population register (BEF) Integrated Database for Labour Market Research (IDA) with firm ID and occupation
Heinesen (2010) Estimating Class-size Effects using Within-school Variation in Subject-specific Classes	Economic Journal	School years 2001/2002–2003/2004	6,507 students in 782 school/year cells and 375 schools	Individual	Administrative registers on 9th-grade marks and exam results, school attended, merged via personal and school ID numbers Family background registers (parents' education, income, labour market status, family structure)
Nielsen et al. (2010) Estimating the Effect of Student Aid on College Enrollment: Evidence from a Government Grant Policy Reform	AEJ: Economic Policy	1983–2005 (population register data); high school graduation cohorts 1983–1990, estimation on cohorts 1985 and 1988–1990	108,933 high school graduates in the final selected sample; 54,843 observations in the main probit estimates (cohorts 1985, 1988–1990)	Individual	Register-based dataset covering the entire Danish population, 1983–2005 (Statistics Denmark) Educational event histories (education registers), 1973–2005 High school GPA records Parental income used for student-aid means-testing (tax records) Parental liquid assets from wealth/tax records
Gupta and Simonsen (2010) Non-cognitive Child Outcomes and Universal High Quality Child Care	Journal of Public Economics	1994–2003 (children born 1995; care measured 1999, outcomes 2003)	4,343 observations (children) in the main OLS estimates	Individual	Danish Longitudinal Survey of Children (DALSC), waves 1996, 1999, 2003 Administrative registers on parents' education, labour market status, hours, wages and income (1994–2003) Day Care Register (Statistics Denmark), used descriptively
Leth-Petersen (2010) Intertemporal Consumption and Credit Constraints: Does Total Expenditure Respond to an Exogenous Shock to Credit?	American Economic Review	1987–1996	38,486 households, of which 25,275 live in owner-occupied housing (working-paper version)	Individual	Income tax register: taxable income, transfers, final taxes Wealth tax register: third-party reported assets and liabilities (housing, shares, mortgage deeds, cash, bonds, debt) Administrative registers on family composition and dwelling characteristics Danish Family Expenditure Survey (DES) 1994–1996, used to validate the expenditure imputation
Clark et al. (2009) Job Satisfaction and Co-worker Wages: Status or Signal?	Economic Journal	1994–2001	about 16,000 observations on around 4,100 individuals	Individual + firm	Danish sample of the European Community Household Panel (ECHP), eight waves Integrated Database for Labour Market Research (IDA), matched via CPR number
Damm (2009) Ethnic Enclaves and Immigrant Labor Market Outcomes: Quasi-Experimental Evidence	Journal of Labor Economics	Registers 1984–2000; refugee immigration cohorts 1986–1993	13,927 individuals (balanced panel observed annually for seven years after immigration)	Individual	Longitudinal administrative registers on the immigrant population (Statistics Denmark), 1984–2000 Population register (BEF) incl. country of origin, year of immigration and municipality Survey-based register on immigrants' pre-immigration education and integrated pupil register Municipality statistics: unemployment register, election statistics, register-based labour force statistics, housing statistics Danish Refugee Council administrative statistics on temporary housing (to identify assignment municipality)
Graversen and Ours (2008) How to Help Unemployed Find Jobs Quickly: Experimental Evidence from a Mandatory Activation Program	Journal of Public Economics	November 2005–mid September 2006	4,520 unemployment spells (2,229 treatment, 2,291 control)	Individual	Public Employment Service (PES) administrative registers (treatment status, demographics, meetings with caseworkers) DREAM weekly register of public income transfers (Danish National Labour Market Authority)
Lentz and Mortensen (2008) An Empirical Model of Growth Through Product Innovation	Econometrica	1992–1997	unbalanced panel of 4,872 firms	Firm	Danish Business Statistics Register: annual panel of privately owned firms (value added, total wage bill, full-time equivalent employment)
Bennedsen et al. (2007) Inside the Family Firm: The Role of Families in Succession Decisions and Performance	Quarterly Journal of Economics	1994–2002 (management data); financial data 1991–2003	5,334 successions	Individual + firm	Købmandsstandens Oplysningsbureau (KOB) firm financial and management data (private, from annual reports) Danish Civil Registration System (CPR) with family links Danish Commerce and Companies Agency (Erhvervs- og Selskabsstyrelsen) management/board records with CPR numbers Industry-level data from Statistics Denmark and OECD STAN
Bingley and Lanot (2007) Public Pension Programmes and the Retirement of Married Couples in Denmark	Journal of Public Economics	–	–	Individual	1% sample of Danish couples of potential retirement age from an administrative register
Munch et al. (2006) Are Homeowners Really More Unemployed?	Economic Journal	1997–2000	18,992 persons with 52,738 unemployment spells	Individual	Administrative register data on unemployment spells for a 2.5% random sample of the Danish population Regional unemployment measure from the Institute for Local Government Studies (1987–2000)
Geerdsen (2006) Is there a Threat Effect of Labour Market Programmes? A Study of ALMP in the Danish UI System	Economic Journal	–	–	Individual	Danish UI system administrative data (not specified in abstract)
Christensen et al. (2005) On-the-Job Search and the Wage Distribution	Journal of Labor Economics	November 1994–November 1995	113,332 private-sector establishments	Individual + firm	Integrated Database for Labour Market Research (IDA), matched employer-employee data
Svarer et al. (2005) Rent Control and Unemployment Duration	Journal of Public Economics	1997–2000	14,645 persons contributing 31,966 unemployment spells	Individual	10% random sample of the Danish adult population from administrative registers (Statistics Denmark) Housing unit characteristics for dwellings occupied by the sample Weekly labour market event histories Danish Tax Authorities 1999 hedonic model for owner-occupied housing (to predict uncontrolled rent)
Browning and Leth-Petersen (2003) Imputing Consumption from Income and Wealth Information	Economic Journal	1994–1996 survey years, linked to register years around the survey year	–	Individual	Danish Expenditure Survey 1994–96 Administrative income and wealth (tax) records: disposable income and year-end asset holdings
Albæk and Sørensen (1998) Worker Flows and Job Flows in Danish Manufacturing, 1980–91	Economic Journal	1980–1991	–	Individual + firm	Plant-level data on all Danish manufacturing plants and their workers (register not named in abstract)