Job Specialization and Labor Market Turnover

Srinivasan Murali
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Srinivasan Murali: Flame University

Review of Economic Dynamics, 2025, vol. 58

Abstract: This paper studies the decline in labor market turnover over recent decades, in particular, job finding, separation, and job changing rates. I analyze the role of an increase in specialization of jobs in accounting for this decline, where specialization is defined as the impact of mismatch on match productivity. Combining individual-level data from NLSY79 and NLSY97 with data on skills from ASVAB and O*NET, I empirically estimate job specialization and show that the specialization has increased over time. To quantify the impact of this increasing specialization on labor market turnover, I build an equilibrium search and matching model with two-sided ex ante heterogeneity, on-the-job search, and endogenous separations. The calibrated model shows that higher job specialization leads to a decline in all the measures of labor market turnover. As specialization increases, firms and workers become more selective in forming matches. Thus, well-matched firms and workers choose to remain in their matches longer, while bad matches get destroyed faster. Since higher specialization leads to an increase in the proportion of good matches in the economy, it results in a decline in the labor market turnover. (Copyright: Elsevier)

Keywords: Turnover; Specialization; Mismatch; Sorting (search for similar items in EconPapers)
JEL-codes: E24 J63 J64 (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1016/j.red.2025.101305

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