Workers' migration has become an important global issue, and gave a rise to a number of bilateral and multilateral agreements on coordination of social security rights. The East Africa Community (EAC) is in the process of developing social security coordination instrument. However, international experiences indicate that, coordinating social security for migrant workers is a complex issue due to reasons such as seasonal employment, poor ratification of international instruments and conflicting national policies. These difficulties raise concerns over the safety of migrants' social security rights. Assessing international and regional social security coordination mechanisms could provide insights for the policy makers within the EAC. The main research question is, therefore, "to what extent do social security instruments protect migrant workers' social security rights, and facilitating coordination within regional and international level?""