This paper investigates the labour market and welfare changes experienced by enlarged-EU migrants before and after 2007. For this purpose, we briefly review the Spanish socio-economic institutional background, as well as its migration policy towards enlarged-EU citizens. Then we discuss the...

This paper investigates the relationship between immigration and the size of the informal or underground economy. Using regional variation for the Spanish provinces we find that the massive immigration wave between 2000 and 2009 is highly correlated to the share of unregistered employment, a...