We consider a model of optimal law enforcement where sanctions can be reduced for self-reporting individuals. The literature is extended in two directions: First, we distinguish between two self-reporting stages: a first one before the case is investigated, and a second one where the criminal is...

Although the theoretical literature on the performance of voluntary approaches to environmental protection has progressed quite far in the last decade, no one has rigorously addressed the obvious point that even voluntary emissions control policies must be enforced. This paper examines the...