The 2004 reunification of Eastern and Western Europe and the subsequent economic crisis caused a surge in intra-European labour mobility and a profound shift in preceding patterns of migration in Europe. While previous decades of European integration brought very modest cross-border flows of labour, the past decade has engendered the largest European movements of labour in modern time - mostly from East to West, but eventually also from South to North. In a situation of record high European unemployment, this has sparked controversy about the very notion of free movement, one of the basic...