This paper studies the question: Why are there Firms? Motivated by observations of a variety of economies, several distinct concepts of what it means to be a firm are identified and then analyzed with mechanism design models. In the first class of models, a group of individuals is a firm if they...

We present a sequence of two-period models of incentive-based compensation in order to understand how the properties of optimal compensation structures vary with changes in the model environment. Each model corresponds to a different occupation within a bank, such as credit line managers, loan...

This paper studies optimal contracting under synergies. We define influence as the extent to which effort by one agent reduces a colleague's marginal cost of effort, and synergy to be the sum of the (unidimensional) influence parameters across a pair of agents. In a two-agent model, effort...