This chapter examines dominant approaches to the study of migration and places domestic migration within these paradigms in order to illustrate the parallels between the patterns and processes of domestic and international labor migrations. While the widely known and applied models of international migration are applicable to the majority of migrations, a theoretical approach that considers the disparities that exist within countries and the consequent flows of labor in such contexts is lacking. While focusing on internal colonialism, the chapter also proposes a broader interpretation of migration theories that accounts for the movement and experiences of internal migrants.