Competitive risk sharing contracts with one-sided commitment

Harald Uhlig () and Dirk Krueger

No 2005-003, SFB 649 Discussion Papers from Humboldt University Berlin, Collaborative Research Center 649: Economic Risk

Abstract: This paper analyzes dynamic equilibrium risk sharing contracts between profit-maximizing intermediaries and a large pool of ex-ante identical agents that face idiosyncratic income uncertainty that makes them heterogeneous ex-post. In any given period, after having observed her income, the agent can walk away from the contract, while the intermediary cannot, i.e. there is one-sided commitment. We consider the extreme scenario that the agents face no costs to walking away, and can sign up with any competing intermediary without any reputational losses. We demonstrate that not only autarky, but also partial and full insurance can obtain, depending on the relative patience of agents and financial intermediaries. Insurance can be provided because in an equilibrium contract an up-front payment effectively locks in the agent with an intermediary. We then show that our contract economy is equivalent to a consumption-savings economy with one-period Arrow securities and a short-sale constraint, similar to Bulow and Rogoff (1989). From this equivalence and our characterization of dynamic contracts it immediately follows that without cost of switching financial intermediaries debt contracts are not sustainable, even though a risk allocation superior to autarky can be achieved.

Keywords: Long-term contracts; Risk Sharing; Limited Commitment; Competition (search for similar items in EconPapers)
JEL-codes: D11 D91 E21 G22 (search for similar items in EconPapers)
Date: 2005
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Related works:
Journal Article: Competitive risk sharing contracts with one-sided commitment (2006)
Working Paper: Competitive risk sharing contracts with one-sided commitment (2005)
Working Paper: Competitive Risk Sharing Contracts with One-Sided Commitment (2004)
Working Paper: Competitive Risk Sharing Contracts with One-Sided Commitment (2003)
Working Paper: Competitive Risk Sharing Contracts with One-Sided Commitment (2003)
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