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Internalizing externalities of loss-prevention through insurance monopoly: An analysis of interdependent risks

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  • Hofmann, Annette

Abstract

When risks are interdependent, loss-prevention activities of one agent influence the risks faced by others. The social return to an investment in loss-prevention is greater than the private return. From a perspective of social welfare, the market allocation is not optimal and leads to under-investment in prevention allround. This article considers consumer welfare under conditions of interdependent risks and demonstrates that a monopolistic insurer can internalize the arising externalities by setting appropriate prevention incentives through insurance premiums. A monopoly insurance solution reduces not only costs of risk selection, but can also play an important role in loss-prevention.

Suggested Citation

  • Hofmann, Annette, 2005. "Internalizing externalities of loss-prevention through insurance monopoly: An analysis of interdependent risks," Working Papers on Risk and Insurance 16, University of Hamburg, Institute for Risk and Insurance.
  • Handle: RePEc:zbw:hzvwps:16
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    References listed on IDEAS

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    1. Mario Jametti & Thomas von Ungern-Sternberg, 2005. "Assessing the Efficiency of an Insurance Provider—A Measurement Error Approach," The Geneva Risk and Insurance Review, Palgrave Macmillan;International Association for the Study of Insurance Economics (The Geneva Association), vol. 30(1), pages 15-34, June.
    2. Ehrlich, Isaac & Becker, Gary S, 1972. "Market Insurance, Self-Insurance, and Self-Protection," Journal of Political Economy, University of Chicago Press, vol. 80(4), pages 623-648, July-Aug..
    3. Brito, Dagobert L. & Sheshinski, Eytan & Intriligator, Michael D., 1991. "Externalities and compulsary vaccinations," Journal of Public Economics, Elsevier, vol. 45(1), pages 69-90, June.
    4. Harris Schlesinger & Emilio Venezian, 1986. "Insurance Markets with Loss-Prevention Activity: Profits, Market Structure, and Consumer Welfare," RAND Journal of Economics, The RAND Corporation, vol. 17(2), pages 227-238, Summer.
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    Cited by:

    1. Hirsch, Bernhard & Nell, Martin, 2007. "Anreizkompatibilität von Entschädigungssystemen für Kosten und Verluste aus Tierseuchenausbrüchen in der Europäischen Union," Working Papers on Risk and Insurance 21, University of Hamburg, Institute for Risk and Insurance.

    More about this item

    Keywords

    externalities; insurance monopoly; Nash equilibrium; social welfare;

    JEL classification:

    • C70 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - General
    • D62 - Microeconomics - - Welfare Economics - - - Externalities
    • G22 - Financial Economics - - Financial Institutions and Services - - - Insurance; Insurance Companies; Actuarial Studies

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