Achim Wambach

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Any opinions expressed here are those of the author(s) and not those of the institute. Research disseminated by IZA may include views on policy, but the institute itself takes no institutional policy positions. The Institute for the Study of Labor (IZA) in Bonn is a local and virtual international research center and a place of communication between(More)
November1999 Abstract: Rothschild and Stiglitz (1976) demonstrated that adverse selection may entail nonexis-tence of equilibrium in competitive insurance markets. We approach this problem in a dynamic model with boundedly rational insurance rms. Firms' behavior is based on imitation of proot making contracts, withdrawal of loss making contracts, and(More)
Most insurance companies publish few data on the occurrence and detection of insurance fraud. This stands in contrast to the previous literature on costly state verification, which has shown that it is optimal to commit to an auditing strategy, as the credible announcement of thoroughly auditing claim reports might act as a powerful deterrent. We show that(More)
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