Low-skilled prime-age men are less likely to be employed than high-skilled prime-age men, and the differential has increased since the 1970s. I build a search model encompassing three explanations: (1) automation and trade reduced the demand for low-skilled workers; (2) health, welfare, and recreational gaming/computer technology reduced the supply of low-skilled workers; and (3) factors affecting job search, such as online job boards, reduced frictions for high-skilled workers. I find a shift in demand away from low-skilled workers was the leading cause, a shift in supply had little effect, and search frictions actually reduced employment inequality.

低技能的适龄男性比高技能的适龄男性受雇的可能性更低，而且这种差异自1970年代以来有所增加。我建立了一个包含三个解释的搜索模型：（1）自动化和贸易减少了对低技能工人的需求；（2）健康，福利和娱乐性游戏/计算机技术减少了低技能工人的供应；（3）在线求职等影响求职的因素，减少了高技能工人的摩擦。我发现需求从低技能工人的转移是主要原因，供应的转移影响不大，搜索摩擦实际上减少了就业不平等。