Undocumented workers in the labor market: an analysis of the earnings of legal and illegal Mexican immigrants in the United States.

"This paper studies the differences in earnings between Mexican legal and illegal immigrants in the United States. The analysis includes a cross-sectional examination of the wage differences between legal and undocumented workers as well as a longitudinal analysis examining the impact of legalization on the earnings of previously-undocumented workers. It is shown that the average hourly wage rate of male Mexican legal immigrants in the United States was 41.8% higher than that of undocumented workers while female legal immigrants earned 40.8% more."