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Stochastic Search Equilibrium

  • Giuseppe Moscarini
  • Fabien Postel-Vinay

We study equilibrium wage and employment dynamics in a class of popular search models with wage posting, in the presence of aggregate productivity shocks. Firms offer and commit to (Markov) contracts, which specify a wage contingent on all payoff-relevant states, but must pay equally all of their workers, who have limited commitment and are free to quit at any time. We find sufficient conditions for the existence and uniqueness of a stochastic search equilibrium in such contracts, which is Rank Preserving [RP]: larger and more productive firms offer more generous contracts to their workers in all states of the world. On the RP equilibrium path, turnover is always efficient as workers always move from less to more productive firms. The resulting stochastic dynamics of firm size provide an intuitive explanation for the empirical finding that large employers have more cyclical job creation ( Moscarini and Postel-Vinay, 2012 ). Finally, computation of RP equilibrium contracts is tractable. Copyright 2013, Oxford University Press.

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File URL: http://hdl.handle.net/10.1093/restud/rdt012
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Article provided by Oxford University Press in its journal Review of Economic Studies.

Volume (Year): 80 (2013)
Issue (Month): 4 ()
Pages: 1545-1581

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Handle: RePEc:oup:restud:v:80:y:2013:i:4:p:1545-1581
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  1. Fabien Postel-Vinay & Jean-Marc Robin, 2002. "To Match or Not To Match ? Optimal Wage Policy with Endogenous Worker search Intensity," Working Papers 2002-59, Centre de Recherche en Economie et Statistique.
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  14. Giuseppe Moscarini & Fabien Postel-Vinay, 2009. "Large Employers Are More Cyclically Sensitive," Bristol Economics Discussion Papers 09/609, Department of Economics, University of Bristol, UK.
  15. Bontemps, Christian & Robin, Jean-Marc & van den Berg, Gerard J, 2000. "Equilibrium Search with Continuous Productivity Dispersion: Theory and Nonparametric Estimation," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 41(2), pages 305-58, May.
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  17. Giuseppe Moscarini & Fabien Postel-Vinay, 2009. "The Timing of Labor Market Expansions: New Facts and a New Hypothesis," NBER Chapters, in: NBER Macroeconomics Annual 2008, Volume 23, pages 1-51 National Bureau of Economic Research, Inc.
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  22. Giuseppe Moscarini & Fabien Postel-Vinay, 2012. "The Contribution of Large and Small Employers to Job Creation in Times of High and Low Unemployment," American Economic Review, American Economic Association, vol. 102(6), pages 2509-39, October.
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  25. Melvyn G. Coles, 2001. "Equilibrium Wage Dispersion, Firm Size and Growth," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 4(1), pages 159-187, January.
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