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Anatomy of Lifetime Earnings Inequality: Heterogeneity in Job Ladder Risk vs. Human Capital

Fatih Karahan (), Serdar Ozkan () and Jae Song

No 2022-002, Working Papers from Federal Reserve Bank of St. Louis

Abstract: We study the determinants of lifetime earnings (LE) inequality in the U.S. by focusing on latent heterogeneity in job ladder dynamics and on-the-job learning as sources of wage growth differentials. Using administrative data, we find (i) more frequent job switches among lower LE workers, mainly driven by nonemployment spells, (ii) little heterogeneity in average annual earnings growth of job stayers in the bottom two-thirds of the LE distribution, and (iii) an earnings growth for job switchers that rises strongly with LE. We estimate a structural model featuring a rich set of worker types and firm heterogeneity. We find vast differences in ex-ante job ladder risk—job loss, job finding, and contact rates—across workers. These differences account for 75% of the lifetime wage growth differential among the bottom half of the LE distribution. Above the median, almost all lifetime wage growth differences are a result of Pareto-distributed learning ability.

Keywords: job ladder; human capital; search frictions; life-cycle earnings risk; lifetime income inequality; Pareto tails; heterogeneity (search for similar items in EconPapers)
JEL-codes: E24 J24 J31 J64 (search for similar items in EconPapers)
Pages: 73 pages
Date: 2022-01-10, Revised 2023-03-04
New Economics Papers: this item is included in nep-lma and nep-mac
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Working Paper: Anatomy of Lifetime Earnings Inequality: Heterogeneity in Job Ladder Risk vs. Human Capital (2019) Downloads
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Persistent link: https://EconPapers.repec.org/RePEc:fip:fedlwp:93614

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DOI: 10.20955/wp.2022.002

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