Competitive risk sharing contracts with one-sided commitment

Arbeitspapier

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.

Object Details

• Language: Englisch

References and Relationships

• Bibliographic citation: Series: SFB 649 Discussion Paper ; No. 2005-003

Classification and Topics

• Classification: Wirtschaft ; Insurance; Insurance Companies; Actuarial Studies ; Macroeconomics: Consumption; Saving; Wealth ; Consumer Economics: Theory ; Micro-Based Behavioral Economics: Role and Effects of Psychological, Emotional, Social, and Cognitive Factors on Decision Making‡
• Subject: Long-term contracts ; Risk Sharing ; Limited Commitment ; Competition ; Finanzintermediär ; Risikomanagement ; Vertrag ; Versicherung ; Theorie

Contributors, Places and Time

• Event: Geistige Schöpfung
• (who): Uhlig, Harald ; Krueger, Dirk
• Event: Veröffentlichung
• (who): Humboldt University of Berlin, Collaborative Research Center 649 - Economic Risk
• (where): Berlin
• (when): 2005

Further information

• Handle: http://hdl.handle.net/10419/25022
• Last update: 10.03.2025, 11:46 AM CET