In a growing number of countries, the delivery of social welfare services is contracted out to private providers, and increasingly, using performance-based contracts. Critics of performance-based incentive contracts stress their potential unintended effects, including cream-skimming and other...

This paper investigates the effectiveness of a monthly lottery in reducing sick leave among workers in a manufacturing firm. Conditions of participation are not having reported sick in the previous three months and not having won the lottery earlier. It turns out that the lottery results in a...