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Invariance of Unemployment and Vacancy Dynamics with Respect to Diminishing Returns to Labor at the Firm Level

Björn Brügemann
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Björn Brügemann: Vrije Universiteit Amsterdam

Authors registered in the RePEc Author Service: Bjoern A. Bruegemann ()

No 21-034/VI, Tinbergen Institute Discussion Papers from Tinbergen Institute

Abstract: This paper show analytically that introducing diminishing returns to labor at the firm level into the Diamond-Mortensen-Pissarides model, followed by recalibration, does not change aggregate dynamics of unemployment and vacancies. This invariance result holds for several standard calibration strategies developed for the model with constant returns, alternative bargaining solutions for the setting with diminishing returns, and different sources of diminishing returns. Invariance makes precise in which sense the common practice of abstracting from diminishing returns is innocuous. It provides an analytical benchmark for quantitative findings obtained in models that do combine a Diamond-Mortensen-Pissarides labor market with diminishing returns at the firm level.

Keywords: Diminishing returns; Diamond-Mortensen-Pissarides model; Aggregate unemployment dynamics; Calibration; Bargaining (search for similar items in EconPapers)
JEL-codes: E24 E32 J64 (search for similar items in EconPapers)
Date: 2021-05-04
New Economics Papers: this item is included in nep-dge, nep-lab and nep-mac
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