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Age Discrimination in Hiring: Evidence from Online Job Ads

Author

Listed:
  • Qinyue Luo

    (ROCKWOOL Foudation Berlin)

  • Liaoliang Zhang

    (National University of Singapore)

Abstract

We analyze explicit age discrimination in hiring decisions and job seekers’ responses in the Chinese labor market, using a large-scale dataset of job postings with ad-level group characteristics of applicants. In nearly 48% of postings, employers explicitly exclude certain age groups, with significant variation across firm types, sizes, industries, and occupations. We show that employers’ explicit age requests are shaped by statistical and taste-based discrimination reflected in job skill requirements and ageist language, as well as constraints such as expected processing costs, and competition in labor demand. Our findings align with a labor demand model where employers decide whether to consider (undesired) candidates from an additional age group based on their search factors and preferences. On the supply side, we leverage the distribution of applicant characteristics such as age and education level to show that age requirements are interpreted as signals rather than strict barriers. Nonetheless, explicit age restrictions substantially alter the applicant pool by attracting younger applicants while discouraging skilled workers.

Suggested Citation

  • Qinyue Luo & Liaoliang Zhang, 2025. "Age Discrimination in Hiring: Evidence from Online Job Ads," RF Berlin - CReAM Discussion Paper Series 2511, Rockwool Foundation Berlin (RF Berlin) - Centre for Research and Analysis of Migration (CReAM).
  • Handle: RePEc:crm:wpaper:2511
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    References listed on IDEAS

    as
    1. David Deming & Lisa B. Kahn, 2018. "Skill Requirements across Firms and Labor Markets: Evidence from Job Postings for Professionals," Journal of Labor Economics, University of Chicago Press, vol. 36(S1), pages 337-369.
    2. Marinescu, Ioana, 2017. "The general equilibrium impacts of unemployment insurance: Evidence from a large online job board," Journal of Public Economics, Elsevier, vol. 150(C), pages 14-29.
    3. Lalive, Rafael & Card, David & Colella, Fabrizio, 2021. "Gender Preferences in Job Vacancies and Workplace Gender Diversity," CEPR Discussion Papers 16619, C.E.P.R. Discussion Papers.
    4. Kevin Lang & Michael Manove & William T. Dickens, 2005. "Racial Discrimination in Labor Markets with Posted Wage Offers," American Economic Review, American Economic Association, vol. 95(4), pages 1327-1340, September.
    5. David Neumark & Patrick Button, 2014. "Did Age Discrimination Protections Help Older Workers Weather the Great Recession?," Journal of Policy Analysis and Management, John Wiley & Sons, Ltd., vol. 33(3), pages 566-601, June.
    6. repec:eee:labchp:v:3:y:1999:i:pc:p:3261-3307 is not listed on IDEAS
    7. David Neumark & Ian Burn & Patrick Button, 2016. "Experimental Age Discrimination Evidence and the Heckman Critique," American Economic Review, American Economic Association, vol. 106(5), pages 303-308, May.
    8. Neumark, David & Song, Joanne, 2013. "Do stronger age discrimination laws make Social Security reforms more effective?," Journal of Public Economics, Elsevier, vol. 108(C), pages 1-16.
    9. Lumsdaine, Robin L. & Mitchell, Olivia S., 1999. "New developments in the economic analysis of retirement," Handbook of Labor Economics, in: O. Ashenfelter & D. Card (ed.), Handbook of Labor Economics, edition 1, volume 3, chapter 49, pages 3261-3307, Elsevier.
    10. Staubli, Stefan & Zweimüller, Josef, 2013. "Does raising the early retirement age increase employment of older workers?," Journal of Public Economics, Elsevier, vol. 108(C), pages 17-32.
    11. Manoli, Dayanand & Weber, Andrea, 2016. "The Effects of the Early Retirement Age on Retirement Decisions," IZA Discussion Papers 10154, Institute of Labor Economics (IZA).
    12. Peter Kuhn & Kailing Shen, 2023. "What Happens When Employers Can No Longer Discriminate in Job Ads?," American Economic Review, American Economic Association, vol. 113(4), pages 1013-1048, April.
    13. Richard W. Johnson & David Neumark, 1997. "Age Discrimination, Job Separations, and Employment Status of Older Workers: Evidence from Self-Reports," Journal of Human Resources, University of Wisconsin Press, vol. 32(4), pages 779-811.
    14. David Neumark & Maysen Yen, 2020. "Relative Sizes of Age Cohorts and Labor Force Participation of Older Workers," Demography, Springer;Population Association of America (PAA), vol. 57(1), pages 1-31, February.
    15. David Neumark, 2012. "Detecting Discrimination in Audit and Correspondence Studies," Journal of Human Resources, University of Wisconsin Press, vol. 47(4), pages 1128-1157.
    16. Van Borm, Hannah & Burn, Ian & Baert, Stijn, 2021. "What Does a Job Candidate's Age Signal to Employers?," Labour Economics, Elsevier, vol. 71(C).
    17. Kuhn, Peter & Shen, Kailing & Zhang, Shuo, 2020. "Gender-targeted job ads in the recruitment process: Facts from a Chinese job board," Journal of Development Economics, Elsevier, vol. 147(C).
    18. Ioana Marinescu & Ronald Wolthoff, 2020. "Opening the Black Box of the Matching Function: The Power of Words," Journal of Labor Economics, University of Chicago Press, vol. 38(2), pages 535-568.
    19. Ioana Marinescu & Roland Rathelot, 2018. "Mismatch Unemployment and the Geography of Job Search," American Economic Journal: Macroeconomics, American Economic Association, vol. 10(3), pages 42-70, July.
    20. Miguel Delgado Helleseter & Peter Kuhn & Kailing Shen, 2020. "The Age Twist in Employers’ Gender Requests: Evidence from Four Job Boards," Journal of Human Resources, University of Wisconsin Press, vol. 55(2), pages 428-469.
    21. Ian Burn & Patrick Button & Luis Munguia Corella & David Neumark, 2022. "Does Ageist Language in Job Ads Predict Age Discrimination in Hiring?," Journal of Labor Economics, University of Chicago Press, vol. 40(3), pages 613-667.
    22. Garen, John E, 1985. "Worker Heterogeneity, Job Screening, and Firm Size," Journal of Political Economy, University of Chicago Press, vol. 93(4), pages 715-739, August.
    23. David J. Deming, 2017. "The Growing Importance of Social Skills in the Labor Market," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 132(4), pages 1593-1640.
    24. David Neumark, 2024. "Age Discrimination in Hiring: Evidence from Age-Blind versus Non-Age-Blind Hiring Procedures," Journal of Human Resources, University of Wisconsin Press, vol. 59(1), pages 1-34.
    25. Ian Burn & Patrick Button & Theodore F. Figinski & Joanne Song McLaughlin, 2020. "Why Retirement, Social Security, and Age Discrimination Policies Need to Consider the Intersectional Experiences of Older Women," NBER Working Papers 27450, National Bureau of Economic Research, Inc.
    26. Button, Patrick & Khan, Mashfiqur R. & Penn, Mary, 2022. "Do stronger employment discrimination protections decrease reliance on Social Security Disability Insurance? Evidence from the U.S. Social Security reforms," The Journal of the Economics of Ageing, Elsevier, vol. 22(C).
    27. Patrick Kline & Evan K Rose & Christopher R Walters, 2022. "Systemic Discrimination Among Large U.S. Employers [“Teachers and Student Achievement in the Chicago Public High Schools,”]," The Quarterly Journal of Economics, Oxford University Press, vol. 137(4), pages 1963-2036.
    28. Allen, Steven G., 2023. "Demand for older workers: What do we know? What do we need to learn?," The Journal of the Economics of Ageing, Elsevier, vol. 24(C).
    29. Carlsson, Magnus & Eriksson, Stefan, 2019. "Age discrimination in hiring decisions: Evidence from a field experiment in the labor market," Labour Economics, Elsevier, vol. 59(C), pages 173-183.
    30. Alexander M. Gelber & Damon Jones & Daniel W. Sacks, 2020. "Estimating Adjustment Frictions Using Nonlinear Budget Sets: Method and Evidence from the Earnings Test," American Economic Journal: Applied Economics, American Economic Association, vol. 12(1), pages 1-31, January.
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    More about this item

    Keywords

    Age Discrimination; Search Frictions; Labor Demand; LaborSupply;
    All these keywords.

    JEL classification:

    • J71 - Labor and Demographic Economics - - Labor Discrimination - - - Hiring and Firing
    • J23 - Labor and Demographic Economics - - Demand and Supply of Labor - - - Labor Demand
    • J22 - Labor and Demographic Economics - - Demand and Supply of Labor - - - Time Allocation and Labor Supply

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