In many countries, general practitioners (GPs) are assigned the task of controlling the validity of their own patients' insurance claims. At the same time, they operate in a market where patients are customers free to choose their GP. Are these roles compatible? Can we trust that the gatekeeping...

A large literature has documented that the unemployment duration of unemployed individuals increases with the generosity of the unemployment insurance (UI) system, which has been interpreted as the disincentive effect of UI benefits. However, unemployed workers typically also have caseworkers...

A quantitative framework of firm dynamics is developed where the size of the informal sector is determined by financial constraints and the burden of taxation. Improving access to credit for formal sector firms increases aggregate TFP and output while reducing the size of the informal sector....

The surplus that is created in a successful entrepreneurial venture is much higher than the profit corresponding to the risk-adjusted market rate of return. The part of the surplus that exceeds this level may be denoted "entrepreneurial rent." Such rents normally disappear in the long run but...