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Declining Search Frictions, Unemployment, and Growth

Paolo Martellini, Guido Menzio

Journal of Political Economy · 2020 · Volume 128 · Issue 12

DOI: 10.1086/710975

Abstract

For a search-theoretic model of the labor market, we seek conditions for the existence of a balanced growth path (BGP), where unemployment, vacancy, and worker’s transitions rates remain constant in the face of improvements in the production and search technologies. A BGP exists iff firm-worker matches are inspection goods and the quality of a match is drawn from a Pareto distribution. Declining search frictions contribute to growth with an intensity determined by the tail coefficient of the Pareto distribution. We develop a strategy to measure the rate of decline of search frictions and their contribution to growth.

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