We construct a model in which firms use workers' productivities in determining their job assignments. A worker's productivity must exceed some lower bound to satisfy the minimum qualifications for a particular job. If the worker's productivity exceeds some upper bound he is promoted. Under these...

We consider a model where a worker's productivity must exceed some lower bound for himto satisfy the minimum qualifications for a particular job. If the worker's productivity exceeds some upper bound he is promoted. We assume the productivity of every worker increases with experience, tenure and...