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Efficient Sorting in Frictional Labor Markets with Two-Sided Heterogeneity

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Article
Author/s: 
Luca Paolo Merlino
Macroeconomic Dynamics
Issue number: 
Volume 20 / Issue 01 / January 2016
Publisher: 
Cambridge University Press
Year: 
2016
Journal pages: 
95-119
This paper studies how search externalities and wage bargaining distort vacancy creation and the allocation of workers to jobs in markets with two-sided heterogeneity. To do so, I propose a model of a frictional labor market where heterogeneous workers decide which job to look for and firms decide which technology to adopt. At equilibrium, there is perfect segmentation across sectors, which is determined by a unique threshold of workers' productivity. This threshold is inefficient because of participation and composition externalities. The Pigouvian tax scheme that decentralizes optimal sorting shows that these externalities have opposite signs. Furthermore, their relative strength depends on the distribution of workers' skills, so that when there are many (few) skilled workers, too many (few) high-technology jobs are created.
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