argues that if the decision to return home is human capital-driven the return is optimal at the point where the potential wages at home are expected to increase more than the wages in the host country. In addition, another study of Dustmann (2003) using a simple dynamic model of optimal migration duration shows that, conditional upon the decision to migrate temporarily, the returnees optimize their stay abroad if the migration duration decreases (increases) as the wage differential in the host country increases (decreases).