We compare winning and losing firms in lotteries for H-1B visas, matching administrative data on these lotteries to administrative tax data on U.S. firms and to approved U.S. patents. Winning one additional H-1B visa crowds out about 1.5 other workers at the firm. Additional H-1Bs have...

Assuming that immigrants select destinations according to absolute returns to their observable and unobservable human capital, I present a human capital model of migration accounting for taxes, transfers and limited portability of skills. The model predicts both segmented sorting of migrants to...

This paper examines the relationship between individuals' skills and labor market outcomes for the working-age population of Colombia's urban areas. Using a 2012 unique household survey, the paper finds that cognitive skills (aptitudes to perform mental tasks such as comprehension or reasoning)...