SKILL REQUIREMENTS, SEARCH FRICTIONS, AND WAGE INEQUALITY*
将Burdett和Mortensen的模型扩展，引入技能要求导致的工人异质性，分析工资不平等，并校准模型解释1980年代末至1990年代组内和组间不平等的共同变化。
We analyze wage inequality, extending the Burdett and Mortensen ( International Economic Review 39 (1998), 257–73) model by incorporating worker heterogeneity through skill requirements. We provide sufficient conditions for existence of an equilibrium where more productive firms offer higher wages. The unique such equilibrium is characterized in a closed form solution. Both within‐ and between‐group inequality are explicitly calculated. We then calibrate the model to explain the joint movement of both within‐ and between‐group inequality in the late 1980s and 1990s, an explanation that has been elusive in the literature so far.