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Heterogeneous Firms in a Finite Directed Search Economy

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Author Info
Manolis Galenianos () (Department of Economics, Penn State University)
Philipp Kircher () (Department of Economics)

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Abstract

We consider a directed search model for a finite economy with heterogeneous firms in two informational environments. In the first, the productivity of all firms is publicly observed. We prove existence of equilibria in pure posting strategies by firms and show that wage dispersion is driven by fundamentals. That is, more productive firms post higher wages and wage dispersion is absent when firms are homogeneous. When firms have heterogeneous productivities the equilibrium is not constrained efficient. In the second environment the productivity level of each firm is private information. The main results extend to this environment: Equilibria in pure strategies exist; strategies are increasing in productivity; and constrained efficiency does not obtain. When the productivity level of all firms is drawn from the same distribution, symmetric equilibria exist and the ranking of wages equals that of productivity.

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Publisher Info
Paper provided by Penn Institute for Economic Research, Department of Economics, University of Pennsylvania in its series PIER Working Paper Archive with number 07-003.

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Length: 31 pages
Date of creation: 03 Jan 2007
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Handle: RePEc:pen:papers:07-003

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Related research
Keywords: Directed Search; Labor Search; Market Power; Wage Differentials; Efficiency;

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Find related papers by JEL classification:
J31 - Labor and Demographic Economics - - Wages, Compensation, and Labor Costs - - - Wage Level and Structure; Wage Differentials
J63 - Labor and Demographic Economics - - Mobility, Unemployment, and Vacancies - - - Turnover; Vacancies; Layoffs
L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets

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References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
  1. Peters, Michael, 2000. "Limits of Exact Equilibria for Capacity Constrained Sellers with Costly Search," Journal of Economic Theory, Elsevier, vol. 95(2), pages 139-168, December. [Downloadable!] (restricted)
    Other versions:
  2. Melvyn G. Coles & Jan Eeckhout, 2000. "Heterogeneity as a Coordination Device," Economics Working Papers 510, Department of Economics and Business, Universitat Pompeu Fabra. [Downloadable!]
  3. Paul Milgrom & Robert Weber, 1981. "Distributional Strategies for Games with Incomplete Information," Discussion Papers 428R, Northwestern University, Center for Mathematical Studies in Economics and Management Science. [Downloadable!]
  4. Philip J. Reny, 1999. "On the Existence of Pure and Mixed Strategy Nash Equilibria in Discontinuous Games," Econometrica, Econometric Society, vol. 67(5), pages 1029-1056, September.
  5. James Albrecht & Pieter A. Gautier & Susan Vroman, 2006. "Equilibrium Directed Search with Multiple Applications," Review of Economic Studies, Blackwell Publishing, vol. 73(4), pages 869-891, October. [Downloadable!] (restricted)
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  6. Albrecht, James & Tan, Serene & Gautier, Pieter & Vroman, Susan, 2004. "Matching with multiple applications revisited," Economics Letters, Elsevier, vol. 84(3), pages 311-314, September. [Downloadable!] (restricted)
  7. Shi, Shouyong, 2001. "Frictional Assignment. I. Efficiency," Journal of Economic Theory, Elsevier, vol. 98(2), pages 232-260, June. [Downloadable!] (restricted)
  8. Kenneth Burdett & Shouyong Shi & Randall Wright, 2001. "Pricing and Matching with Frictions," Journal of Political Economy, University of Chicago Press, vol. 109(5), pages 1060-1085, October. [Downloadable!] (restricted)
  9. Dale T. Mortensen & Randall Wright, 2002. "Competitive Pricing and Efficiency in Search Equilibrium," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 43(1), pages 1-20, February. [Downloadable!] (restricted)
  10. Milgrom, Paul & Shannon, Chris, 1994. "Monotone Comparative Statics," Econometrica, Econometric Society, vol. 62(1), pages 157-80, January. [Downloadable!] (restricted)
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  11. Montgomery, James D, 1991. "Equilibrium Wage Dispersion and Interindustry Wage Differentials," The Quarterly Journal of Economics, MIT Press, vol. 106(1), pages 163-79, February. [Downloadable!] (restricted)
  12. Moen, Espen R, 1997. "Competitive Search Equilibrium," Journal of Political Economy, University of Chicago Press, vol. 105(2), pages 385-411, April.
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  13. Michael Peters, 1995. "On the Equivalence of Walrasian and Non-Walrasian Equilibria in Contract Markets: The case of Complete Contracts," Working Papers peters-95-01, University of Toronto, Department of Economics. [Downloadable!]
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  14. Manolis Galenianos & Philipp A. Kircher, 2005. "Directed Search with Multiple Job Applications," Bonn Econ Discussion Papers bgse20_2005, University of Bonn, Germany. [Downloadable!]
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  15. Athey, Susan, 2001. "Single Crossing Properties and the Existence of Pure Strategy Equilibria in Games of Incomplete Information," Econometrica, Econometric Society, vol. 69(4), pages 861-89, July.
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  16. Robert Shimer, 2005. "The Assignment of Workers to Jobs in an Economy with Coordination Frictions," Journal of Political Economy, University of Chicago Press, vol. 113(5), pages 996-1025, October.
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  17. Philip J Reny, 2005. "On the Existence of Monotone Pure Strategy Equilibria in Bayesian Games," Levine's Working Paper Archive 784828000000000413, David K. Levine. [Downloadable!]
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  18. Shi, Shouyong, 2002. "A Directed Search Model of Inequality with Heterogeneous Skills and Skill-Based Technology," Review of Economic Studies, Blackwell Publishing, vol. 69(2), pages 467-91, April.
  19. Marja-Liisa Halko & Klaus Kultti & Juha Virrankoski, 2005. "Wage Distribution with a Two-Sided Job Auction," 2005 Meeting Papers 518, Society for Economic Dynamics. [Downloadable!]
  20. Acemoglu, Daron & Shimer, Robert, 1999. "Holdups and Efficiency with Search Frictions," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 40(4), pages 827-49, November.
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Full references

Cited by:
(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

  1. Ken Hori, 2007. "Wage-Directed Job Match with Multiple Applications and Multiple Vacancies: The Optimal Job Application Strategy and Wage Dispersion," Birkbeck Working Papers in Economics and Finance 0711, Birkbeck, Department of Economics, Mathematics & Statistics. [Downloadable!]
  2. Galenianos, Manolis & Kircher, Philipp & Virag, Gabor, 2009. "Market Power and Efficiency in a Search Model," MPRA Paper 17093, University Library of Munich, Germany. [Downloadable!]
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