Requests for permission to photocopy portions of this material for public or commercial use shall be addressed directly to the Copyright Clearance Center (CCC) at info@copyright.com or the Centre frangais d’exploitation du droit de copie (CFC) at contact@cfcopies.com. Although the effects of immigration have been investigated in Thailand before, there is a need for more systematic empirical research into how immigrants contribute to the economy. Such research informs the debate on migration flows, which are increasing globally in particular outside the traditional high-income regions, while research also constitutes a basis to understand which policy responses should be instituted for the good of both immigrants and the destination countries.