Concentration in US Labor Markets: Evidence From Online Vacancy Data
Jose Azar (),
Ioana Marinescu (),
Marshall Steinbaum and
No 24395, NBER Working Papers from National Bureau of Economic Research, Inc
Using data on the near-universe of online US job vacancies collected by Burning Glass Technologies in 2016, we calculate labor market concentration using the Herfindahl-Hirschman index (HHI) for each commuting zone by 6-digit SOC occupation. The average market has an HHI of 4,378, or the equivalent of 2.3 recruiting employers. 60% of labor markets are highly concentrated (above 2,500 HHI) according to the DOJ/FTC guidelines. Highly concentrated markets account for 20% of employment. For manufacturing industries, we show that labor market concentration is distinct from product market concentration, and is negatively correlated with wages in each industry’s top occupation.
JEL-codes: J21 J42 K21 (search for similar items in EconPapers)
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Published as José Azar & Ioana Marinescu & Marshall Steinbaum & Bledi Taska, 2020. "Concentration in US labor markets: Evidence from online vacancy data," Labour Economics, vol 66.
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Journal Article: Concentration in US labor markets: Evidence from online vacancy data (2020)
Working Paper: Concentration in US Labor Markets: Evidence from Online Vacancy Data (2018)
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