The issue of immigrants is quite a contested one in human history. On the one hand, discussions revolve around push factors that force them to leave their areas of origin to embark on these journeys. On the other hand, discussions revolve around pull factors that attract immigrants to other countries or cities. But also critical to these discussions are those perspectives which relate to how immigrants are assimilated into host societies. Chapter 3 revisits these discussions by providing an insight into a theoretical framework that guides the discussion on migrants in Southern Africa. It complements the discussion on inclusive cities in Chapter 1. This chapter puts economic factors at the core of movements. This is not by coincidence, given that contemporary movements in Southern African cities have been generally generated by economic factors. However, this does not disregard other factors such as wars which equally cause instability and generate movements too. This discussion is imbedded in the institutional framework. This notion argues that movements are governed by institutional frameworks which do not only influence the movement of people but also determine their level of stabilisation in foreign countries. The interplay of economic factors and regulations largely determines the extent to which immigrants are stabilised in host countries.