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Does risk sharing increase with risk aversion and risk when commitment is limited?

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  • Laczó, Sarolta

Abstract

I consider a risk-sharing game with limited commitment, and study how the discount factor above which perfect risk sharing is self-enforcing in the long run depends on agents׳ risk aversion and the riskiness of their endowment. When agents face no aggregate risk, a mean-preserving spread may destroy the sustainability of perfect risk sharing if each agent׳s endowment may take more than three values. With aggregate risk the same can happen with only two possible endowment realizations. With respect to risk aversion the intuitive comparative statics result holds without aggregate risk, but it holds only under strong assumptions in the presence of aggregate risk. In simple settings with two endowment values I also show that the threshold discount factor co-moves with popular measures of risk sharing.

Suggested Citation

  • Laczó, Sarolta, 2014. "Does risk sharing increase with risk aversion and risk when commitment is limited?," Journal of Economic Dynamics and Control, Elsevier, vol. 46(C), pages 237-251.
    • Handle: RePEc:eee:dyncon:v:46:y:2014:i:c:p:237-251
    DOI: 10.1016/j.jedc.2014.06.013
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    References listed on IDEAS

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    Cited by:

    1. Jean Guillaume Forand & Jan Zapal, 2017. "The Demand and Supply of Favours in Dynamic Relationships," Working Papers 1705, University of Waterloo, Department of Economics, revised Sep 2017.

    More about this item

    Keywords

    Risk sharing; Limited commitment; Dynamic contracts; Comparative statics;

    JEL classification:

    • C73 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Stochastic and Dynamic Games; Evolutionary Games
    • D10 - Microeconomics - - Household Behavior - - - General
    • D86 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Economics of Contract Law

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