Social insurance and redistribution with moral hazard and adverse selection

Boadway, Robin;Leite-Monteiro, Manuel;Marchand, Maurice;Pestieau, Pierre
(2004)

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Authors
  • Boadway, Robin
    Author
  • Leite-Monteiro, Manuel
    Author
  • Marchand, Maurice
    Author
  • Pestieau, PierreUCLouvain
    Author
Abstract
Rochet (1989) showed that with distortionary income taxes, social insurance is a desirable redistributive device when risk and ability are negatively correlated. This finding is reexamined when ex post moral hazard and adverse selection are included, and under different informational assumptions. Individuals can take actions influencing the size of the loss in the event of accident (or ill health). Social insurance can be supplemented by private insurance, but private insurance markets are affected by both adverse selection and moral hazard. We study how equity and efficiency considerations should be traded off in choosing the optimal coverage of social insurance when those features are introduced. The case for social insurance is strongest when the government is well informed about household productivity.
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Citations

Boadway, R., Leite-Monteiro, M., Marchand, M., & Pestieau, P. (2004). Social insurance and redistribution with moral hazard and adverse selection (CORE Discussion Papers 2004/83). https://hdl.handle.net/2078.5/41477