@techreport{NBERw13669,
 title = "Labor Outflows and Labor Inflows in Puerto Rico",
 author = "George J. Borjas",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "13669",
 year = "2007",
 month = "November",
 URL = "http://www.nber.org/papers/w13669",
 abstract = {Although a sizable fraction of the Puerto Rican-born population moved to the United States, the island also received large inflows of persons born outside Puerto Rico. Hence Puerto Rico provides a unique setting for examining how labor inflows and outflows coexist, and measuring the mirror-image wage impact of these flows. The study yields two findings. First, the skills of the out-migrants differ from those of the in-migrants. Puerto Rico attracts high-skill in-migrants and exports low-skill workers. Second, the two flows have opposing effects on wages: in-migrants lower the wage of competing workers and out-migrants increase the wage.},
}