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No Longer Qualified? Changes in the Supply and Demand for Skills within Occupations

Author

Listed:
  • Modestino, Alicia Sasser

    (Northeastern University)

  • Burke, Mary A.

    (Federal Reserve Bank of Boston)

  • Sadighi, Shahriar

    (Amazon)

  • Sederberg, Rachel

    (Lightcast)

  • Stern, Tomere

    (Northeastern University)

  • Taska, Bledi

    (Lightcast)

Abstract

Although labor market "mismatch" often refers to an imbalances in supply and demand across occupations, mismatch within occupations can arise if skill requirements are changing over time, potentially reducing aggregate matching efficiency within the labor market. To test this, we examine changes in employer education and skill requirements using a database of 200 million U.S. online job postings between 2007 and 2019. We find that the degree of persistence in educational upskilling lasted longer than was previously known and was not uniform but rather varied considerably across occupations and was often coupled with an increased demand for software skills. We also find evidence that upskilling contributed to reduced matching efficiency in certain segments of the US labor market as well as in the aggregate. In particular, matching efficiency was lower in higher-skilled occupations, potentially because they are becoming more specialized, and possibly explaining growing wage polarization and inequality.

Suggested Citation

  • Modestino, Alicia Sasser & Burke, Mary A. & Sadighi, Shahriar & Sederberg, Rachel & Stern, Tomere & Taska, Bledi, 2023. "No Longer Qualified? Changes in the Supply and Demand for Skills within Occupations," IZA Discussion Papers 16542, Institute of Labor Economics (IZA).
    • Handle: RePEc:iza:izadps:dp16542
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    Cited by:

    1. Tara Sinclair & Martha Gimbel, 2020. "Mismatch in Online Job Search," Working Papers 2020-1, The George Washington University, Institute for International Economic Policy.
    2. Emilio Colombo & Alberto Marcato, 2021. "Skill Demand and Labour Market Concentration: Theory and Evidence from Italian Vacancies," DISEIS - Quaderni del Dipartimento di Economia internazionale, delle istituzioni e dello sviluppo dis2104, Università Cattolica del Sacro Cuore, Dipartimento di Economia internazionale, delle istituzioni e dello sviluppo (DISEIS).

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    More about this item

    Keywords

    labor demand; skills; vacancies; unemployment; firm behavior;
    All these keywords.

    JEL classification:

    • D22 - Microeconomics - - Production and Organizations - - - Firm Behavior: Empirical Analysis
    • E24 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Employment; Unemployment; Wages; Intergenerational Income Distribution; Aggregate Human Capital; Aggregate Labor Productivity
    • J23 - Labor and Demographic Economics - - Demand and Supply of Labor - - - Labor Demand
    • J24 - Labor and Demographic Economics - - Demand and Supply of Labor - - - Human Capital; Skills; Occupational Choice; Labor Productivity
    • J63 - Labor and Demographic Economics - - Mobility, Unemployment, Vacancies, and Immigrant Workers - - - Turnover; Vacancies; Layoffs

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