The Complexity of Job Mobility among Young Men
提出工作搜寻涉及雇主匹配和职业匹配的两阶段模型，并用美国青年纵向调查数据验证：换工作但不换职业的男性，在当前换工作时更不可能换职业。
The model of job search involves both employer matches and career matches. Workers may change employers without changing careers but cannot search over possible lines of work while working for one employer. The optimal policy implies a two-stage search strategy in which workers search over types of work first. The patterns of job changes observed in the National Longitudinal Survey of Youth support this two-stage search policy. Among male workers who are changing jobs, those who have previously changed employers while working in their current career are much less likely to change careers during the current job change. Copyright 1999 by University of Chicago Press.