Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/76217 
Authors: 
Year of Publication: 
2003
Series/Report no.: 
Working Paper No. 0302
Publisher: 
University of Zurich, Socioeconomic Institute, Zurich
Abstract: 
Under certain conditions the optimal insurance policy will offer full coverage above a deductible, as Arrow and others have shown long time ago. Interestingly, the same design of insurance policies applies in case of a single loss and ex-ante moral hazard. However, many insurance policies provide coverage against a variety of losses and the possibilities for the insured to affect the probabilities of each possible loss might be substantially different. The optimal design of a insurance contract providing coverage against different losses therefore should generally differ from the standard form under moral hazard. The paper concentrates on the conditions under which the standard insurance contract holds under moral hazard and more than one loss. It gives some evidence that many insurance contracts should be split up. The main result is, that the relative changes of probabilities due to precautious activities are decisive. On the other hand, under moral hazard it is rarely ever optimal to combine two losses in one insurance contract prescribing only a single deductible for both losses if both losses can occur simultaneously.
Subjects: 
insurance
multiple losses
moral hazard
JEL: 
D80
D82
Document Type: 
Working Paper

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