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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 - ECM - Ecole Centrale de Marseille - CNRS - Centre National de la Recherche Scientifique - AMU - Aix Marseille Université - EHESS - École des hautes études en sciences sociales)

  • Renaud Bourlès

    () (GREQAM - Groupement de Recherche en Économie Quantitative d'Aix-Marseille - ECM - Ecole Centrale de Marseille - CNRS - Centre National de la Recherche Scientifique - AMU - Aix Marseille Université - EHESS - École des hautes études en sciences sociales)

  • Frédéric Deroïan

    () (GREQAM - Groupement de Recherche en Économie Quantitative d'Aix-Marseille - ECM - Ecole Centrale de Marseille - CNRS - Centre National de la Recherche Scientifique - AMU - Aix Marseille Université - EHESS - École des hautes études en sciences sociales)

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.

Suggested Citation

  • Mohamed Belhaj & Renaud Bourlès & Frédéric Deroïan, 2010. "Moral hazard and risk-sharing: risk-taking as an incentive tool," Working Papers halshs-00512779, HAL.
  • Handle: RePEc:hal:wpaper:halshs-00512779
    Note: View the original document on HAL open archive server: https://halshs.archives-ouvertes.fr/halshs-00512779
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    References listed on IDEAS

    as
    1. Pierre Dubois & Bruno Jullien & Thierry Magnac, 2008. "Formal and Informal Risk Sharing in LDCs: Theory and Empirical Evidence," Econometrica, Econometric Society, vol. 76(4), pages 679-725, July.
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    5. Gabrielle Demange, 2008. "Sharing aggregate risks under moral hazard," Working Papers halshs-00586739, HAL.
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    7. 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 179-190, March.
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    Cited by:

    1. Yan Ji, 2017. "Job Search under Debt: Aggregate Implications of Student Loans," 2017 Meeting Papers 222, Society for Economic Dynamics.
    2. Bernard Sinclair-Desgagné & Sandrine Spaeter, 2016. "Incentive Contracts and Downside Risk Sharing," Working Papers of BETA 2016-22, Bureau d'Economie Théorique et Appliquée, UDS, Strasbourg.
    3. 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.

    More about this item

    Keywords

    Risk-Taking; Informal Insurance; Moral Hazard;

    JEL classification:

    • D81 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Criteria for Decision-Making under Risk and Uncertainty
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • D86 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Economics of Contract Law
    • G22 - Financial Economics - - Financial Institutions and Services - - - Insurance; Insurance Companies; Actuarial Studies

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