This study evaluates European Union (EU)experience of the mobility of skilled labor migrants afterthe 2004 and 2007 EU enlargements and from the EuropeanNeighborhood Policy (ENP) countries. The study concludesthat migration generally improves the allocated efficiencyof labor markets and there is little if any evidence ofstatistically significant or economically relevant negativeaggregate effects of migration on receiving labor markets.While outflow of young and skilled workers may pose risks tosending countries' economic prospects and publicfinance, circular migration, brain gain, and remittancesattenuate such risks, and have the potential to becomepowerful engines of convergence. Obstructive legislation andill-designed migration policies impede migration and deprivesending and receiving of such potential benefits.