It is wellknown that a group of individuals contributing to a joint production process with diminishing returns will tend, in equilibrium, to put in too little effort if shares of the output are exogenous, and will put in too much effort if their shares are proportional to their inputs. We...

We extend Ilya Segal's work on bilateral contracting in the presence of externalities to the case of bilateral bargaining in the presence of externalities. Similarly to Segal's work, we prove our results for highly general settings, and provide examples of applications.

Does the Pareto criterion discriminate among policy choices when the policymaker does not know the correct model of the economy? If the policymaker can specify ex ante preferences for each agent, there will typically be some policy change that improves the welfare of each agent relative to a...

This paper proposes a normative theory of constitutional rules. We characterize the set of optimal constitutional rules under different assumptions about the degree of contractual imperfections. Our model explains why constitutions contain different types of rules. In particular, we derive...

This paper analyzes and structurally estimates a synchronization game. Agents take part in an activity and benefit from the participation of others. Coordinated actions are fruit of correlated effects as well as endogenous interactions. Standard tools applied in optimal stopping problems for...

This paper is motivated by a practical income (or wealth) taxation problem: For a public good economy where the provision of public goods is to be financed by income taxes collected from individuals, what is the optimal feasible tax mechanism when a social planner is relatively uninformed of the...

In an abstract model of division problems, we study division rules that are not manipulable through a reallocation of individual characteristic vectors within a coalition (e.g. reallocation of claims in bankruptcy problems). A coalition can be formed if members of the coalition are connected on...