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Competitive Insurance Markets Under Adverse Selection and Capacity Constraints

Author

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  • Inderst, Roman
  • Wambach, Achim

Abstract

Ever since the seminal work by Rothschild and Stiglitz (1976) on competitive insurance markets under adverse selection the equilibrium-non-existence problem has been one of the major puzzles in insurance economics. We extend the original analysis by considering firms that face capacity constraints due to limited capital. Two scenarios are considered: if the demand at any insurer exceeds the capacity: either consumers are rationed, or they are served, but the insurer faces a larger risk of bankruptcy. We show under mild assumptions that a pure strategy equilibrium exists, where every consumer buys his appropriate Rothschild-Stiglitz contract.

Suggested Citation

  • Inderst, Roman & Wambach, Achim, 1999. "Competitive Insurance Markets Under Adverse Selection and Capacity Constraints," CEPR Discussion Papers 2269, C.E.P.R. Discussion Papers.
    • Handle: RePEc:cpr:ceprdp:2269
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    JEL classification:

    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
    • C78 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Bargaining Theory; Matching Theory
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • G22 - Financial Economics - - Financial Institutions and Services - - - Insurance; Insurance Companies; Actuarial Studies

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