The Design of Optimal Insurance Contracts: A Topological Approach

Sandrine Spaeter and Patrick Roger
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Sandrine Spaeter: [1] University Louis Pasteur, LARGE-38 Boulevard d'Anvers, 67 070 Strasbourg, France [2] CREST/ENSAE, Malakoff, France

The Geneva Risk and Insurance Review, 1997, vol. 22, issue 1, 5-19

Abstract: This article deals with the optimal design of insurance contracts when the insurer faces administrative costs. If the literature provides many analyses of risk sharing with such costs, it is often assumed that these costs are linear. Furthermore, mathematical tools or initial conditions differ from one paper to another. We propose here a unified framework in which the problem is presented and solved as an infinite dimensional optimization program on a functional vector space equipped with an original norm. This general approach leads to the optimality of contracts lying on the frontier of the indemnity functions set. This frontier includes, in particular, contracts with a deductible, with total insurance and the null vector. Hence, we unify the existing results and point out some extensions. The Geneva Papers on Risk and Insurance Theory (1997) 22, 5–19. doi:10.1023/A:1008654729504

Date: 1997
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