The vast literature on the effects of immigration on wages and employment is plagued by likely endogeneity and aggregation biases. Ours is among the first papers to address both of these issues by means of causality analysis and by accounting for human capital endowments. Our analysis confirms...

Guest workers on visas in the United States may be unable to quit bad employers due to barriers to mobility and a lack of labor market competition. Using H-1B, H-2A, and H-2B program data, we calculate the concentration of employers in geographically defined labor markets within occupations. We...

The paper resolves the role of recent immigration to Ireland with special emphasis on the Polish people. First part of the analysis is devoted to both indigenous and exiguous changes in the Irish labour market. Second part of the paper takes on the spot migrations from UE 10 the third part...