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On moral hazard and nonexclusive contracts

Author

Listed:
  • Andrea Attar

    (TSE-R - Toulouse School of Economics - UT Capitole - Université Toulouse Capitole - Comue de Toulouse - Communauté d'universités et établissements de Toulouse - INRA - Institut National de la Recherche Agronomique - EHESS - École des hautes études en sciences sociales - CNRS - Centre National de la Recherche Scientifique, IDEI - Institut d'Economie Industrielle - UT Capitole - Université Toulouse Capitole - Comue de Toulouse - Communauté d'universités et établissements de Toulouse, GREMAQ - Groupe de recherche en économie mathématique et quantitative - UT Capitole - Université Toulouse Capitole - Comue de Toulouse - Communauté d'universités et établissements de Toulouse - INRA - Institut National de la Recherche Agronomique - EHESS - École des hautes études en sciences sociales - CNRS - Centre National de la Recherche Scientifique, Università di Roma II - UNiversita di Roma II)

  • Arnold Chassagnon

    (TSE-R - Toulouse School of Economics - UT Capitole - Université Toulouse Capitole - Comue de Toulouse - Communauté d'universités et établissements de Toulouse - INRA - Institut National de la Recherche Agronomique - EHESS - École des hautes études en sciences sociales - CNRS - Centre National de la Recherche Scientifique, GREMAQ - Groupe de recherche en économie mathématique et quantitative - UT Capitole - Université Toulouse Capitole - Comue de Toulouse - Communauté d'universités et établissements de Toulouse - INRA - Institut National de la Recherche Agronomique - EHESS - École des hautes études en sciences sociales - CNRS - Centre National de la Recherche Scientifique, PJSE - Paris-Jourdan Sciences Economiques - ENS-PSL - École normale supérieure - Paris - PSL - Université Paris Sciences et Lettres - EHESS - École des hautes études en sciences sociales - ENPC - École nationale des ponts et chaussées - CNRS - Centre National de la Recherche Scientifique, PSE - Paris School of Economics - UP1 - Université Paris 1 Panthéon-Sorbonne - ENS-PSL - École normale supérieure - Paris - PSL - Université Paris Sciences et Lettres - EHESS - École des hautes études en sciences sociales - ENPC - École nationale des ponts et chaussées - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement)

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.

Suggested Citation

  • Andrea Attar & Arnold Chassagnon, 2009. "On moral hazard and nonexclusive contracts," Post-Print halshs-00754338, HAL.
    • Handle: RePEc:hal:journl:halshs-00754338
    DOI: 10.1016/j.jmateco.2008.09.007
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    Cited by:

    1. Frédéric Loss & Gwanaël Piaser, 2013. "Linear Prices Equilibria and Nonexclusive Insurance Market," Working Papers hal-00870113, HAL.
    2. Joseph E. Stiglitz & Jungyoll Yun & Andrew Kosenko, 2017. "Equilibrium in a Competitive Insurance Market Under Adverse Selection with Endogenous Information," NBER Working Papers 23556, National Bureau of Economic Research, Inc.
    3. Attar, Andrea & Mariotti, Thomas & Salanié, François, 2021. "Competitive Nonlinear Pricing under Adverse Selection," TSE Working Papers 21-1201, Toulouse School of Economics (TSE), revised Aug 2022.
    4. Andrea Attar & Eloisa Campioni & Gwenaël Piaser & Uday Rajan, 2012. "Competing mechanism games of moral hazard: communication and robustness," Review of Economic Design, Springer;Society for Economic Design, vol. 16(4), pages 283-296, December.
    5. Charles M. Kahn & Francisco Rivadeneyra & Tsz-Nga Wong, 2020. "Eggs in One Basket: Security and Convenience of Digital Currencies," Working Papers 2020-032, Federal Reserve Bank of St. Louis.
    6. Andrea Attar & Thomas Mariotti & François Salanié, 2022. "Regulating Insurance Markets: Multiple Contracting And Adverse Selection," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 63(3), pages 981-1020, August.
    7. Green, Daniel & Liu, Ernest, 2021. "A dynamic theory of multiple borrowing," Journal of Financial Economics, Elsevier, vol. 139(2), pages 389-404.
    8. Andrea Attar & Thomas Mariotti & François Salanié, 2011. "Nonexclusive Competition in the Market for Lemons," Econometrica, Econometric Society, vol. 79(6), pages 1869-1918, November.
    9. Andrea Attar & Catherine Casamatta & Arnold Chassagnon & Jean-Paul Décamps, 2019. "Multiple Lenders, Strategic Default, and Covenants," American Economic Journal: Microeconomics, American Economic Association, vol. 11(2), pages 98-130, May.
    10. Jaynes, Gerald D., 2011. "Equilibrium and Strategic Communication in the Adverse Selection Insurance Model," Working Papers 91, Yale University, Department of Economics.
    11. Gerald D. Jaynes, 2018. "Endogenous Beliefs and Institutional Structure in Competitive Equilibrium with Adverse Selection," Cowles Foundation Discussion Papers 2159, Cowles Foundation for Research in Economics, Yale University.
    12. A. Citanna & P. Siconolfi, 2016. "Designing insurance markets with moral hazard and nonexclusive contracts," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 62(1), pages 325-360, June.
    13. Loss, Frédéric & Piaser, Gwenaël, 2019. "Linear price equilibria in a non-exclusive insurance market," Journal of Mathematical Economics, Elsevier, vol. 81(C), pages 22-30.
    14. Gerald D. Jaynes, 2011. "Equilibrium and Strategic Communication in the Adverse Selection Insurance Model," Levine's Working Paper Archive 786969000000000243, David K. Levine.
    15. repec:ipg:wpaper:2014-042 is not listed on IDEAS
    16. , & , & ,, 2014. "Nonexclusive competition under adverse selection," Theoretical Economics, Econometric Society, vol. 9(1), January.

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