We designed a natural-field experiment in the context of local public transportation to test whether rewards in the form of lottery prizes coupled with traditional sanctions efficiently reduce free-riding. We organized a lottery in a medium-size Italian city the participation in which is linked...

The gender discrimination class action Dukes v. Wal-Mart, whose certification was recently affirmed in the Ninth Circuit, presents a large-scale challenge to the company's excessive reliance on subjective judgment in employment decision-making. It is one in a growing number of similar suits, all...

We analyze the effect of social norms and enforcement on the dynamics of taxpayer compliance. Specifically, we develop two models to evaluate the movement between classes of compliant and noncompliant taxpayers. Our analysis suggests that the effect on compliance of changing enforcement levels...

We study the impact of tax and minimum wage reforms on the incidence of informality. To gauge the incidence of informality, we use measures of the extent of tax evasion, the extent of minimum wage non-compliance, and the size of the informal workforce. Our approach allows us to examine (i) the...