Across the member states of the European Union and beyond, paid transactions occur that are not declared to the state for tax, social security and/or labour law purposes when they should be declared. This is not a minority practice. The undeclared economy is estimated to be equivalent to 17.9...

There is no consensus in the economics of law enforcement literature regarding the likely effects of wrongful convictions on deterrence. While many assert that wrongful convictions and wrongful acquittals are likely to cause similar reductions in deterrence, others, most notably Lando (2006),...

In this article we derive the mix of criminal sanctions—choosing among prison, parole, and probation—that achieves any target level of deterrence at least cost. We assume that prison has higher disutility and higher cost per unit time than parole and probation and that potential offenders...

We still know very little about the incentives of police, often due to data constraints and the underlying policy environment. Using geocoded crime data and a novel source of within-city spatial and temporal variation in punishment severity, I am able to shed light on enforcement behavior. I...