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Multiple Contracting in Insurance Markets

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  • Mariotti, Thomas
  • Attar, Andrea
  • Salanié, François

Abstract

We study insurance markets in which privately informed consumers can purchase coverage from several insurers. Under adverse selection, multiple contracting severely restricts feasible trades. Indeed, only one budget-balanced allocation is implementable by an entry-proof tariff, and each layer of coverage must be fairly priced given the consumer types who purchase it. This allocation is the unique equilibrium outcome of a game in which cross-subsidies between contracts are prohibited. Equilibrium contracts exhibit quantity discounts and negative correlation between risk and coverage. Public intervention should target insurers' strategic behavior, while consumers can be left free to choose their preferred amount of coverage.

Suggested Citation

  • Mariotti, Thomas & Attar, Andrea & Salanié, François, 2016. "Multiple Contracting in Insurance Markets," CEPR Discussion Papers 11631, C.E.P.R. Discussion Papers.
  • Handle: RePEc:cpr:ceprdp:11631
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    Cited by:

    1. Andrea Attar & Thomas Mariotti & François Salanié, 2021. "Entry-Proofness and Discriminatory Pricing under Adverse Selection," American Economic Review, American Economic Association, vol. 111(8), pages 2623-2659, August.
    2. Pradeep Dubey & John Geanakoplos, 2018. "Non-Exclusive Insurance with Free Entry: A Pedagogical Note," Department of Economics Working Papers 18-05, Stony Brook University, Department of Economics.
    3. Boyer, Pierre C. & Kempf, Hubert, 2020. "Regulatory arbitrage and the efficiency of banking regulation," Journal of Financial Intermediation, Elsevier, vol. 41(C).
    4. Attar, Andrea & Mariotti, Thomas & Salanié, François, 2019. "On competitive nonlinear pricing," Theoretical Economics, Econometric Society, vol. 14(1), January.
    5. Bannier, Christina E. & Feess, Eberhard & Packham, Natalie, 2014. "Incentive schemes, private information and the double-edged role of competition for agents," CFS Working Paper Series 475, Center for Financial Studies (CFS).
    6. Joseph E. Stiglitz & Jungyoll Yun & Andrew Kosenko, 2017. "Equilibrium in a Competitive Insurance Market Under Adverse Selection with Endogenous Information," NBER Working Papers 23556, National Bureau of Economic Research, Inc.
    7. Attar, Andrea & Mariotti, Thomas & Salanié, François, 2017. "Private Information and Insurance Rejections: A comment," IDEI Working Papers 868, Institut d'Économie Industrielle (IDEI), Toulouse.
    8. Pradeep Dubey & John Geanakoplos, 2014. "Games with Money and Status: How Bes to Incentivize Work," Department of Economics Working Papers 14-02, Stony Brook University, Department of Economics.
    9. Kosenko, Andrew & Stiglitz, Joseph & Yun, Jungyoll, 2023. "Bilateral information disclosure in adverse selection markets with nonexclusive competition," Journal of Economic Behavior & Organization, Elsevier, vol. 205(C), pages 144-168.
    10. Joseph E. Stiglitz & Jungyoll Yun & Andrew Kosenko, 2019. "Characterization, Existence, and Pareto Optimality in Markets with Asymmetric Information and Endogenous and Asymmetric Disclosures: Basic Analytics of Revisiting Rothschild-Stiglitz," NBER Working Papers 26251, National Bureau of Economic Research, Inc.

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    More about this item

    Keywords

    Insurance markets; Multiple contracting; Adverse selection;
    All these keywords.

    JEL classification:

    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • D86 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Economics of Contract Law

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