Dustmann (2007) sustains that the decision to temporarily migrate is conditional on the expectations of migrants about the economic conditions in their country after return which likewise influence the individual decisions about investment in human capital, employment choice abroad and the share of savings or remittances. The knowledge acquired in the host country leads to an upgrade of skills and productivity of migrants, which is ultimately valorized in the labour market of the country of origin compared to the host country’s labour market. Thus, in order to appropriately assess the labour market performance of return migrants it is relevant to take into account information about their skill acquisition in the host country.