This article characterizes labor markets in which the heterogeneity of
workers and firms results in thin markets and rents. Neoclassical mar
ginal analysis and matching are blended into a computable general equi
librium model of trade in efficiency units of labor. Although workers'
bargaining problems are interrelated, a simple wage contract generate
s wage flexibility and efficient matching in the model's equilibrium.
Equilibrium wages are predicted to vary with the diversity of firms, t
he scarcity of skills, and the costliness of search. The model is appl
ied to superstar markets, union bargaining in sports, interindustry wa
ge differentials, and the relationship between pay and profit.