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Minimum Wage Employment Effects and Labour Market Concentration

Author

Listed:
  • José Azar
  • Emiliano Huet
  • Ioana Marinescu
  • Bledi Taska
  • Till von

Abstract

This paper shows that more highly concentrated labour markets experience more positive employment effects of the minimum wage. In the most concentrated labour markets, employment rises following a minimum wage increase. The paper establishes its main findings by studying the effects of local minimum wage increases on a key low-wage retail sector, and using data on labour market concentration that covers the entirety of the U.S. with fine spatial variation at the occupation level. The results carry over to the fast-food sector and the entire low-wage labour market and are robust to using proxies of labour market concentration available for a broader range of industries, such as the number of establishments and population density. A model of oligopsonistic competition can explain these effects: there is more room to increase wages in high-concentration areas where wages tend to be further below marginal productivity. These findings provide evidence supporting monopsonistic wage setting as an explanation for the near-zero minimum wage employment effect documented in prior work.

Suggested Citation

  • José Azar & Emiliano Huet & Ioana Marinescu & Bledi Taska & Till von, 2024. "Minimum Wage Employment Effects and Labour Market Concentration," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 91(4), pages 1843-1883.
    • Handle: RePEc:oup:restud:v:91:y:2024:i:4:p:1843-1883.
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    File URL: http://hdl.handle.net/10.1093/restud/rdad091
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