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Efficiency of Simultaneous Search

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  • Philipp Kircher

    ()
    (Department of Economics, University of Pennsylvania)

Abstract

We analyze a labor search model in which workers choose their search intensity by deciding how often and where to apply for jobs. They observe firms’ wage postings prior to their decision. Due to coordination frictions a firm may not receive any applications; otherwise it is able to hire unless all its applicants have better offers. We show that in equilibrium the entry of firms, the search intensity and the number of filled vacancies are constrained efficient. Wage dispersion creates an (endogenous) safety net against unemployment that is essential for efficiency. As application costs vanish the equilibrium becomes unconstrained efficient.

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Bibliographic Info

Paper provided by Penn Institute for Economic Research, Department of Economics, University of Pennsylvania in its series PIER Working Paper Archive with number 08-004.

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Length: 46 pages
Date of creation: 03 Jan 2008
Date of revision:
Handle: RePEc:pen:papers:08-004

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Keywords: simultaneous search; directed search; efficient wage dispersion; modified Hosios condition; search with stable matchings;

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  1. James Albrecht & Pieter Gautier & Susan Vroman, 2003. "Equilibrium Directed Search with Multiple Applications," Tinbergen Institute Discussion Papers 03-004/3, Tinbergen Institute, revised 14 Feb 2004.
  2. Hector Chade & Lones Smith, 2005. "Simultaneous Search," NajEcon Working Paper Reviews 172782000000000033, www.najecon.org.
  3. 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.
  4. Jeremy Bulow & Jonathan Levin, 2005. "Matching and Price Competition," NBER Working Papers 11506, National Bureau of Economic Research, Inc.
  5. Gaumont D. & Schindler M. & Wright R., 2005. "“Alternative Theories of Wage Dispersion”," Working Papers ERMES 0505, ERMES, University Paris 2.
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  7. Shouyong Shi, 2008. "Directed Search for Equilibrium Wage-Tenure Contracts," Working Papers tecipa-343, University of Toronto, Department of Economics.
  8. Alain Delacroix & Shouyong Shi, 2003. "Directed Search On the Job and the Wage Ladder," Working Papers shouyong-03-04, University of Toronto, Department of Economics.
  9. Peters, Michael, 1997. "On the Equivalence of Walrasian and Non-Walrasian Equilibria in Contract Markets: The Case of Complete Contracts," Review of Economic Studies, Wiley Blackwell, vol. 64(2), pages 241-64, April.
  10. Shouyong Shi, 2002. "A Directed Search Model of Inequality with Heterogeneous Skills and Skill-Biased Technology," Review of Economic Studies, Oxford University Press, vol. 69(2), pages 467-491.
  11. 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.
  12. Robert Shimer, 2001. "The Assignment of Workers to Jobs In an Economy with Coordination Frictions," NBER Working Papers 8501, National Bureau of Economic Research, Inc.
  13. Galenianos, Manolis & Kircher, Philipp, 2009. "Directed search with multiple job applications," Journal of Economic Theory, Elsevier, vol. 144(2), pages 445-471, March.
  14. Gautier, Pieter & Moraga-González, José L., 2004. "Strategic Wage Setting and Coordination Frictions with Multiple Applications," IZA Discussion Papers 1260, Institute for the Study of Labor (IZA).
  15. Moen, E.R., 1995. "Competitive Search Equilibrium," Memorandum 37/1995, Oslo University, Department of Economics.
  16. Hosios, Arthur J, 1990. "On the Efficiency of Matching and Related Models of Search and Unemployment," Review of Economic Studies, Wiley Blackwell, vol. 57(2), pages 279-98, April.
  17. Gale, Douglas, 1987. "Limit theorems for markets with sequential bargaining," Journal of Economic Theory, Elsevier, vol. 43(1), pages 20-54, October.
  18. Butters, Gerard R, 1977. "Equilibrium Distributions of Sales and Advertising Prices," Review of Economic Studies, Wiley Blackwell, vol. 44(3), pages 465-91, October.
  19. Shi, Shouyong, 2001. "Frictional Assignment. I. Efficiency," Journal of Economic Theory, Elsevier, vol. 98(2), pages 232-260, June.
  20. Roth, Alvin E, 1984. "The Evolution of the Labor Market for Medical Interns and Residents: A Case Study in Game Theory," Journal of Political Economy, University of Chicago Press, vol. 92(6), pages 991-1016, December.
  21. Michael Peters, 1998. "Limits of Exact Equilibria for Capacity Constrained Sellers with costlySearch," Working Papers peters-98-01, University of Toronto, Department of Economics.
  22. Peters, Michael, 1991. "Ex Ante Price Offers in Matching Games Non-steady States," Econometrica, Econometric Society, vol. 59(5), pages 1425-54, September.
  23. Albrecht, James W. & Gautier, Pieter A. & Vroman, Susan B., 2003. "Matching with multiple applications," Economics Letters, Elsevier, vol. 78(1), pages 67-70, January.
  24. Burdett, Kenneth & Judd, Kenneth L, 1983. "Equilibrium Price Dispersion," Econometrica, Econometric Society, vol. 51(4), pages 955-69, July.
  25. 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.
  26. 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.
  27. Stephan Lauermann, 2013. "Dynamic Matching and Bargaining Games: A General Approach," American Economic Review, American Economic Association, vol. 103(2), pages 663-89, April.
  28. Acemoglu, Daron & Shimer, Robert, 2000. "Wage and Technology Dispersion," Review of Economic Studies, Wiley Blackwell, vol. 67(4), pages 585-607, October.
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