I study the effect of worker heterogeneities on wages and unemployment in a directed search model. A worker's productivity in a given firm depends both on his type and on a worker-firm specific component. Firms advertise unconditional wage offers only. The resulting equilibrium is inefficient, with a too high wage premium for high-type workers, and too few high-type jobs. This reduces the welfare of high-type workers. My findings contrast with the findings in the literature on labor market segmentation, where it is argued that the existence of high-type workers forces down wages and reduces welfare for low-type workers. Copyright 2003 By The Economics Department Of The University Of Pennsylvania And Osaka University Institute Of Social And Economic Research Association.
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Article provided by Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association in its journal International Economic Review.