In a tournament, competitors may engage in undesirable activities, or 'cheating', in order to gain an advantage. Examples of such activities include the taking of steroids, plagiarism, and 'creative accounting'. This paper considers the problem of deterrence of these activities and finds that...

This paper provides an efficiency explanation for regulation of sex, drugs and gambling (the so-called ``morality laws''). The argument is motivated by the observation that the design an enforcement of these laws often promotes discretion by the people engaging in such activities. We propose...

The economic theory of optimal punishments states that the expected penalty for a crime ought to be equal (or at least proportional) to the social harm caused by the act. The Criminal Codes in both Canada and the United States allow for criminals to be penalized to a greater degree if they are a...

This paper characterizes optimal policies in the presence of tax evasion and undocumented workers. In equilibrium, domestic workers may work exclusively in the formal sector or also in the informal sector. Surprisingly, in equilibrium, wages are always equalized between domestic and undocumented...

This paper characterizes optimal policies in the presence of tax evasion and undocumented workers. Equilibrium can be characterized as segmented or non-segmented, depending on whether domestic workers work exclusively in the formal sector (segmented) or also in the informal sector...