This paper starts out with a brief discussion of the historical background, the justifications and the political forces behind the built up of the modern welfare state. It also summarizes its major achievements in terms of economic efficiency and redistribution. The paper also tries to identify...

We analyze a model of moral hazard in local public services which could be efficiently managed by officials under local democratic accountability, but not by officials who are appointed by the ruler of a centralized autocracy. The ruler might prefer to retain an official who diverted resources...

We explore in an experiment what leads to the breakdown of partnerships. Subjects are assigned a partner and participate in a repeated public good game with stochastic outcomes. They can choose each period between staying in the public project or working on their own. There is excessive exit as...