摘要 : We estimate an equilibrium on-the-job search model with endogenous search intensity. Workers differ by skill, firms by productivity. Workers respond to mismatch by intensive search, and sorting may result from complementarities in... 展开 We estimate an equilibrium on-the-job search model with endogenous search intensity. Workers differ by skill, firms by productivity. Workers respond to mismatch by intensive search, and sorting may result from complementarities in the match-level production function. The model is estimated on Danish-matched employeremployee data. Firms are ranked through revealed preference by the fraction of hires that is poached from other firms: the poaching rank. Identification is obtained by firm rank conditional mobility and wage patterns. Wage variation is decomposed into four sources: sorting (40%), worker heterogeneity (32%), firm heterogeneity (18%), and frictional competition (10%). A social planner can improve output net of search cost by 1.5% relative to the decentralized solution. 收起