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Assurance des catastrophes naturelles : faut-il choisir entre prévention et solidarité ?


  • L. Latruffe
  • P. Picard


This paper investigates the trade-off between solidarity and incentives to prevention in the insurance of natural disasters. Our strating point is the French indemnification system for natural disasters governed by the Law of 13 July 1982: in order to assert the solidarity of the nation with high risk individuals, all property insureds have to pay a socalled cat-nat premium. The amount of this premium is set by the Government and it does not depend on incurred risk, which strongly reduces the efficiency of prevention incentives. We establish a condition under which the liberalization of the market for natural disaster insurance associated with compensatory transfers would lead to a Pareto improvement, although individual prevention costs are unobservable. We characterize the trade-off between prevention and solidarity which follows from such a policy and we show that it dominates incentives through deductibles. Finally we also show that our results still hold in a setting where there is an asymmetry of information about individual risks between insureds on one side and insurers and the Government on the other side.
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  • L. Latruffe & P. Picard, 2002. "Assurance des catastrophes naturelles : faut-il choisir entre prévention et solidarité ?," THEMA Working Papers 2002-31, THEMA (THéorie Economique, Modélisation et Applications), Université de Cergy-Pontoise.
  • Handle: RePEc:ema:worpap:2002-31

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    References listed on IDEAS

    1. Dionne, G. & St-Michel, P. & Gibbens, A., 1993. "An Economic Analysis of Insurance Fraud," Cahiers de recherche 93010, Centre interuniversitaire de recherche en économie quantitative, CIREQ.
    2. Jörg Schiller, 2006. "The Impact of Insurance Fraud Detection Systems," Journal of Risk & Insurance, The American Risk and Insurance Association, vol. 73(3), pages 421-438.
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    5. A. Dixit & P. Picard, 2002. "On the Role of Good Faith in Insurance Contracting," Princeton Economic Theory Working Papers 26c6897fd1cd46f8f39ffb6ca, David K. Levine.
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    7. Hellwig, Martin, 1987. "Some recent developments in the theory of competition in markets with adverse selection ," European Economic Review, Elsevier, vol. 31(1-2), pages 319-325.
    8. M. Martin Boyer, 2004. "Overcompensation as a Partial Solution to Commitment and Renegotiation Problems: The Case of "Ex Post" Moral Hazard," Journal of Risk & Insurance, The American Risk and Insurance Association, vol. 71(4), pages 559-582.
    9. Picard, Pierre, 1996. "Auditing claims in the insurance market with fraud: The credibility issue," Journal of Public Economics, Elsevier, vol. 63(1), pages 27-56, December.
    10. Spence, Michael, 1978. "Product differentiation and performance in insurance markets," Journal of Public Economics, Elsevier, vol. 10(3), pages 427-447, December.
    11. A. Dixit, 1999. "Adverse Selection and Insurance with Uberrima Fides," Princeton Economic Theory Papers 99f5, Economics Department, Princeton University.
    12. Khalil, Fahad & Parigi, Bruno M, 1998. "Loan Size as a Commitment Device," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 39(1), pages 135-150, February.
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    Cited by:

    1. Céline Grislain-Letrémy & Sabine Lemoyne de Forges, 2011. "Coordinating Flood Insurance and Collective Prevention Policies: A Fiscal Federalism Perspective," Working Papers 2011-07, Center for Research in Economics and Statistics.
    2. Pierre Picard, 2008. "Natural Disaster Insurance and the Equity-Efficiency Trade-Off," Journal of Risk & Insurance, The American Risk and Insurance Association, vol. 75(1), pages 17-38.
    3. Véronique Le Bihan & Sophie Pardo, 2010. "Les limites de la couverture des risques en aquaculture : le cas des conchyliculteurs en France," Working Papers hal-00527115, HAL.
    4. repec:dau:papers:123456789/5518 is not listed on IDEAS
    5. Michel-Kerjan Erwann & de Marcellis-Warin Nathalie, 2006. "Public-Private Programs for Covering Extreme Events: The Impact of Information Distribution on Risk-Sharing," Asia-Pacific Journal of Risk and Insurance, De Gruyter, vol. 1(2), pages 1-30, February.
    6. Grislain-Letrémy, Céline, 2012. "Assurance et prévention des catastrophes naturelles et technologiques," Economics Thesis from University Paris Dauphine, Paris Dauphine University, number 123456789/9073 edited by Villeneuve, Bertrand, October.

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