This paper presents a complete general equilibrium model with flexible wages, where the degree to which wages and productivity change when cyclical employment changes is roughly consistent with postwar U.S. data. Firms with market power are assumed to bargain simultaneously with many employees,...

I suppose that people react with anger when others show themselves not to be minimally altruistic. With heterogeneous agents, this can account for the experimental results of ultimatum and dictator games. Moreover, it can account for the surprisingly large fraction of individuals who offer an...

This paper surveys economic models where cooperation arises in the workplace because individuals' utility functions involve a concern for others (altruism) or a desire to respond to like with like (reciprocity). It also discusses empirical evidence which bears on the relevance of these theories....

This paper presents a complete general equilibrium model with flexible wages where the degree to which wages and productivity change when cyclical employment changes is roughly consistent with postwar U.S. data. Firms with market power are assumed to bargain simultaneously with many employees,...