Ethnic Enclaves and Immigrant Labor Market Outcomes: Quasi‐Experimental Evidence
利用丹麦难民随机安置政策，发现族裔聚居区规模增加一个相对标准差，难民年均收入平均提高18%，且效果与技能水平无关，可能通过族裔网络传播工作信息提升匹配质量。
I examine the effects of the ethnic enclave size on labor market outcomes of immigrants. I account for ability sorting into enclaves by exploiting a Danish spatial dispersal policy under which refugees were randomly dispersed across locations. First, I find strong evidence that refugees with unfavorable unobserved characteristics self-select into ethnic enclaves. Second, a relative standard deviation increase in the ethnic enclave size increases annual earnings by 18% on average, irrespective of skill level. Third, further findings are consistent with the explanation that ethnic networks disseminate job information, which increases the job-worker match quality and thereby the hourly wage rate. (c) 2009 by The University of Chicago.