This thesis focuses on the implications of past, and hypothetical future movements of people for the prosperity of natives and residents living in the highly developed regions. The first Chapter discusses the welfare impact of migration in the OECD countries by analyzing recent migration flows (net migration between 2000 and 2010), and total stock of migrants in 2010. The importance of different channels, through which migration affects the wellbeing of stayers, is discussed. In the second Chapter, the theoretical framework from the first Chapter is extended to evaluate migration policies in a multi-country general equilibrium model with endogenous migration and trade. In particular, the economic impact of removing visa and trade barriers between the European Union and five major partners (Australia, Canada, Japan, Turkey and the US) is quantified. Additionally, the proposed model gives theoretical evidence about the relations between migration and trade after imposing exogenous shocks to both types of barriers. The third Chapter proposes an innovative modeling technique to identify the global demographic impact of different migration policies in the EU. The model jointly considers peoples’ endogenous decisions about the country of destination, type of visa to apply for, and the duration of stay. In consequence, the proposed framework provides a micro-foundation for multilateral resistance to migration (a complex structure of dependencies between migration choice options). The research question posed in this paper challenges the capacity of the European Union to attract high-skilled immigrants.(ECGE - Sciences économiques et de gestion) -- UCL, 2016Accès libre18/04/2016(ECGE - Sciences économiques et de gestion) -- UCL, 2016Anglai
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