This document summarizes research on international urban migrants in Johannesburg, South Africa and their access to antiretroviral therapy (ART). It finds that most migrants come to Johannesburg for economic opportunities and rely on the informal economy for livelihoods. While migrants have a right to healthcare including ART, many face barriers accessing it from public sector facilities and end up relying on NGOs instead. Ensuring all migrants' access to ART, especially early access, is important as it allows people to maintain or regain livelihoods to support themselves and others. The document calls for uniform ART policies across the public health sector and recognition of the informal economy's importance for migrant livelihoods.