It is important to systematically monitor assistance programs, to assess if and how reintegration has been achieved as well as how to more effectively reintegrate trafficking victims. This manual outlines two aspects of monitoring – 1) how to monitor individual reintegration plans and 2) how to monitor reintegration services – and provides a matrix, composed of indicators and the associated means of verification, to measure the outcomes and impact of individual services and, cumulatively, the various stages of reintegration. Monitoring is undertaken from the perspective of reintegration service providers (NGOs, IOs and GOs) as well as program beneficiaries.