Borjas (1987, 1991 and 1994) developed the self-selection theory, applying Roy's model (1951) to migration studies. He establishes that the characteristics of migrants in terms of skills and abilities are driven by wage distribution differences between the host country and home. In this regard,...

Migrants are among the groups most vulnerable to economic fluctuations. As predicted by the 'welfare magnet' hypothesis, migrants can therefore be expected to--ceteris paribus--prefer countries with more generous welfare provisions to insure themselves against labor market risks. This paper...