The purpose of this paper is to investigate contract renegotiation in multi-agent situations where risk averse agents negotiate a contract offer to the principal after they observed a common, unverifiable perfect signal about their actions. Renegotiation gives the agents gains from mutual insurance.

Suppose competent economists obtain common information on business forecasts, and incompetent economists obtain independent information. If no one knows who is able, young economists mimic others because a forecast different from others indicated inability when it proves wrong. An older...

The purpose of the paper is to investigate how side track (or collusion) among agents affects the principal's welfare in a hidden action model. We assume that the agent's actions are mutually observable but not contradictable among them and hence direct coordination of actions via side...

This paper analyzes the rationality of Japanese macroeconomic forecasters. It finds that Japanese individual forecasters are pessimistic in boom and optimistic in recession, and that they over-react to new information. Across forecasters, the magnitude of average forecast revisions is not...