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I discuss the recent literature that has led to new interest in the idea of monopsonistic wage setting. Building on advances in search theory and in models of differentiated products, researchers have used a number of different strategies to identify the elasticity of firm-specific labor supply. A growing consensus is that firms have some wage-setting power, though many questions remain about the sources of that power. (JEL B21, D21, D24, D43, J22, J31, J42)
David Card (Thu,) studied this question.