Why are skilled workers more mobile than average? What determines positive migration flows toward relatively poorer regions or states of a country? How can one explain the sharp decrease in the mobility rate observed within European countries notwithstanding the persistent regional disparities?...

This paper offers an explanation of the high mobility of skilled workers based on human capital complementarities. If the skill premium is increasing in the average level of human capital of a location, and there exist fixed migration costs, in equilibrium the more skilled the workers are, the...

Why are highly skilled workers more responsive than other workers to productivity differentials when taking migration decisions? Why do low-skilled workers abandon rich regions? This paper aims to answer these questions using skill complementarities and endogenous price differentials between...