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Nonlinear Incentive Provision in Walrasian Markets: A Cournot Convergence Approach

Author

Listed:
  • Martin Hellwig

    (Max Planck Institute for Research on Collective Goods, Bonn, Germany)

Abstract
The paper studies insurance with moral hazard in a system of contingent-claims markets. Insurance buyers are modelled as Cournot monopolists or oligopolists. The other agents condition their expectations on market prices, as in models of rational-expectations equilibrium with asymmetric information. Thereby they correctly anticipate accident probabilities corresponding to effort incentives induced by insurance buyers’ net trades. When there are many agents to share the insurance buyer’s risk, Cournot equilibrium outcomes are close to being second-best. In contrast, if insurance buyers are price takers, equilibria fail to exist or are bounded away from being second-best.

Suggested Citation

  • Martin Hellwig, 2004. "Nonlinear Incentive Provision in Walrasian Markets: A Cournot Convergence Approach," Discussion Paper Series of the Max Planck Institute for Research on Collective Goods 2004_8, Max Planck Institute for Research on Collective Goods.
    • Handle: RePEc:mpg:wpaper:2004_08
    as

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    References listed on IDEAS

    as
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    Full references (including those not matched with items on IDEAS)

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    More about this item

    Keywords

    Insurance; Moral Hazard; Incentive Contracting; Walrasian Markets; Rational-Expectations; Cournot Equilibrium;
    All these keywords.

    JEL classification:

    • D50 - Microeconomics - - General Equilibrium and Disequilibrium - - - General
    • D62 - Microeconomics - - Welfare Economics - - - Externalities
    • D80 - Microeconomics - - Information, Knowledge, and Uncertainty - - - General

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