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On moral hazard and nonexclusive contracts

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Author Info

  • Attar, Andrea
  • Chassagnon, Arnold

Abstract

We study an economy where intermediaries compete over contracts in a nonexclusive insurance market affected by moral hazard. In this context, we show that, contrarily to what is commonly believed, market equilibria may fail to be efficient even if the planner is not allowed to enforce exclusivity of trades (third best inefficiency). Our setting is the same as that of Bisin and Guaitoli [Bisin, A., Guaitoli, D., 2004. Moral hazard with nonexclusive contracts. Rand Journal of Economics 2, 306-328]. We hence argue that some of the equilibrium conditions they imposed are not necessary, and we exhibit a set of equilibrium allocations which fail to satisfy them.

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Bibliographic Info

Article provided by Elsevier in its journal Journal of Mathematical Economics.

Volume (Year): 45 (2009)
Issue (Month): 9-10 (September)
Pages: 511-525

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Handle: RePEc:eee:mateco:v:45:y:2009:i:9-10:p:511-525

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Web page: http://www.elsevier.com/locate/jmateco

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Keywords: Non-exclusivity Insurance Moral hazard;

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References

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  1. Christine A. Parlour & Uday Rajan, 2001. "Competition in Loan Contracts," American Economic Review, American Economic Association, vol. 91(5), pages 1311-1328, December.
  2. Bisin, Alberto & Guaitoli, Danilo, 1998. "Moral Hazard and Non-Exclusive Contracts," CEPR Discussion Papers 1987, C.E.P.R. Discussion Papers.
  3. Andrea, ATTAR & Eloisa, CAMPIONI & Gwenaël, PIASER, 2005. "Multiple Lending and Constrained Efficiency in the Credit Market," Discussion Papers (ECON - Département des Sciences Economiques) 2005024, Université catholique de Louvain, Département des Sciences Economiques.
  4. Martimort, David & Stole, Lars, 1999. "Contractual Externalities and Common Agency Equilibria," IDEI Working Papers 110, Institut d'Économie Industrielle (IDEI), Toulouse, revised 2003.
  5. Simon, Leo K & Stinchcombe, Maxwell B, 1995. "Equilibrium Refinement for Infinite Normal-Form Games," Econometrica, Econometric Society, vol. 63(6), pages 1421-43, November.
  6. Bizer, David S & DeMarzo, Peter M, 1992. "Sequential Banking," Journal of Political Economy, University of Chicago Press, vol. 100(1), pages 41-61, February.
  7. Andrea Attar & Nicolas Porteiro & Gwenaël Piaser, 2006. "A note on Common Agency models of moral hazard," Working Papers 2006_36, Department of Economics, University of Venice "Ca' Foscari".
  8. David Martimort & Lars Stole, 2001. "The Revelation and Delegation Principles in Common Agency Games," CESifo Working Paper Series 575, CESifo Group Munich.
  9. Pauly, Mark V, 1974. "Overinsurance and Public Provision of Insurance: The Roles of Moral Hazard and Adverse Selection," The Quarterly Journal of Economics, MIT Press, vol. 88(1), pages 44-62, February.
  10. Attar, Andrea & Majumdar, Dipjyoti & Piaser, Gwenaël & Porteiro, Nicolás, 2008. "Common agency games: Indifference and separable preferences," Mathematical Social Sciences, Elsevier, vol. 56(1), pages 75-95, July.
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Citations

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Cited by:
  1. Andrea Attar & Eloisa Campioni & Gwenael Piaser & Uday Rajan, 2011. "Competing Mechanism Games of Moral Hazard: Communication and Robustness," CEIS Research Paper 196, Tor Vergata University, CEIS, revised 10 Jun 2011.
  2. Gerald D. Jaynes, 2011. "Equilibrium and Strategic Communication in the Adverse Selection Insurance Model," Levine's Working Paper Archive 786969000000000243, David K. Levine.
  3. Frédéric Loss & Gwenaël Piaser, 2014. "Linear Prices Equilibria and Nonexclusive Insurance Market," Working Papers 2014-042, Department of Research, Ipag Business School.
  4. Andrea Attar & Thomas Mariotti & Francois Salanie, 2009. "Non-Exclusive Competition in the Market for Lemons," LERNA Working Papers 09.13.289, LERNA, University of Toulouse.
  5. Mariotti, Thomas & Salanié, François & Attar, Andrea, 2014. "Nonexclusive competition under adverse selection," Theoretical Economics, Econometric Society, vol. 9(1), January.
  6. Jaynes, Gerald D., 2011. "Equilibrium and Strategic Communication in the Adverse Selection Insurance Model," Working Papers 91, Yale University, Department of Economics.

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