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Moral hazard and risk-sharing: risk-taking as an incentive tool

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  • Mohamed Belhaj

    ()
    (GREQAM - Groupement de Recherche en Économie Quantitative d'Aix-Marseille - Université de la Méditerranée - Aix-Marseille II - Université Paul Cézanne - Aix-Marseille III - Ecole des Hautes Etudes en Sciences Sociales (EHESS) - CNRS : UMR6579)

  • Renaud Bourlès

    ()
    (GREQAM - Groupement de Recherche en Économie Quantitative d'Aix-Marseille - Université de la Méditerranée - Aix-Marseille II - Université Paul Cézanne - Aix-Marseille III - Ecole des Hautes Etudes en Sciences Sociales (EHESS) - CNRS : UMR6579)

  • Frédéric Deroïan

    ()
    (GREQAM - Groupement de Recherche en Économie Quantitative d'Aix-Marseille - Université de la Méditerranée - Aix-Marseille II - Université Paul Cézanne - Aix-Marseille III - Ecole des Hautes Etudes en Sciences Sociales (EHESS) - CNRS : UMR6579)

Abstract

We examine how moral hazard impacts risk-sharing when risk-taking can be part of the mechanism design. In a two-agent model with binary effort, we show that moral hazard always increases risk-taking (that is the amount of wealth invested in a risky project) whereas the effect on risk-sharing (the amount of wealth transferred between agents) is ambiguous. Risk-taking therefore appears as a useful incentive tool. In particular, in the case of preferences exhibiting Constant Absolute Risk Aversion (CARA), moral hazard has no impact on risk-sharing and risk-taking is the unique mechanism used to solve moral hazard. Thus, risk-taking appears to be the prevailing incentive tool.

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Bibliographic Info

Paper provided by HAL in its series Working Papers with number halshs-00512779.

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Date of creation: 31 Aug 2010
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Handle: RePEc:hal:wpaper:halshs-00512779

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Keywords: Risk-Taking; Informal Insurance; Moral Hazard;

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References

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  1. Jan Carlos Hatchondo, 2008. "A quantitative study of the role of wealth inequality on asset prices," Economic Quarterly, Federal Reserve Bank of Richmond, issue Win, pages 73-96.
  2. Townsend, Robert M, 1994. "Risk and Insurance in Village India," Econometrica, Econometric Society, vol. 62(3), pages 539-91, May.
  3. Dubois, Pierre & Jullien, Bruno & Magnac, Thierry, 2007. "Formal and Informal Risk Sharing in LDCs: Theory and Empirical Evidence," IZA Discussion Papers 2842, Institute for the Study of Labor (IZA).
  4. Arnott, Richard & Stiglitz, Joseph E, 1991. "Moral Hazard and Nonmarket Institutions: Dysfunctional Crowding Out or Peer Monitoring?," American Economic Review, American Economic Association, vol. 81(1), pages 179-90, March.
  5. Daniel A. Ackerberg & Maristella Botticini, 2002. "Endogenous Matching and the Empirical Determinants of Contract Form," Journal of Political Economy, University of Chicago Press, vol. 110(3), pages 564-591, June.
  6. Gabrielle Demange, 2008. "Sharing aggregate risks under moral hazard," PSE Working Papers halshs-00586739, HAL.
  7. Belhaj, Mohamed & Deroïan, Frédéric, 2012. "Risk taking under heterogenous revenue sharing," Journal of Development Economics, Elsevier, vol. 98(2), pages 192-202.
  8. repec:hal:wpaper:halshs-00586739 is not listed on IDEAS
  9. Braverman, Avishay & Stiglitz, Joseph E, 1982. "Sharecropping and the Interlinking of Agrarian Markets," American Economic Review, American Economic Association, vol. 72(4), pages 695-715, September.
  10. Manuela Angelucci & Giacomo De Giorgi, 2009. "Indirect Effects of an Aid Program: How Do Cash Transfers Affect Ineligibles' Consumption?," American Economic Review, American Economic Association, vol. 99(1), pages 486-508, March.
  11. Renaud Bourl�s & Dominique Henriet, 2012. "Risk-sharing Contracts with Asymmetric Information," The Geneva Risk and Insurance Review, Palgrave Macmillan, vol. 37(1), pages 27-56, March.
  12. Coate, Stephen & Ravallion, Martin, 1993. "Reciprocity without commitment : Characterization and performance of informal insurance arrangements," Journal of Development Economics, Elsevier, vol. 40(1), pages 1-24, February.
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Cited by:
  1. Keenan, Donald C. & Snow, Arthur, 2012. "Ross risk vulnerability for introductions and changes in background risk," Journal of Mathematical Economics, Elsevier, vol. 48(4), pages 197-206.

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