We analyze the impact on a firm's profits and optimal wage rates, and on the distribution of workers' earnings, when workers compare their earnings with those of co-workers. We consider a low-productivity worker who receives lower wage earnings than a high-productivity worker. When the...

By means of examples that pertain to individual, family, and community contexts, it is shown that migration between locations is compatible with a zero expected net earnings differential between locations. The examples give rise to testable predictions that differ sharply from the predictions...