This article examines Labour Migration and Skills Transfer in East Africa: Brain Drain, Brain Gain, and Circular Migration: A South Sudan Case Study with a focused emphasis on South Sudan within the field of Business. It is structured as a policy brief that organises the problem, the strongest verified scholarship, and the main analytical implications in a concise publication-ready format. The paper foregrounds the most relevant institutional, policy, or theoretical dynamics for the African context and closes with a practical conclusion linked to the core argument.