In soccer penalty kicks, goalkeepers choose their action before they can clearly observe the kick direction. An analysis of 286 penalty kicks in top leagues and championships worldwide shows that given the probability distribution of kick direction, the optimal strategy for goalkeepers is to...

Mandatory restrictions in employment law, designed to promote the welfare of workers, are debated fiercely. Proponents argue that they protect workers. Opponents believe that they spawn inefficiency and harm workers. Yet all agree that their welfare implications depend on their degree of...