<< Objectives >>M4Pris aims at developing up a peer support programme for prison staff, improving and promoting health in targeted prisons using a whole-systems approach, decreasing levels of job-related stress and burnout among prison staff, and increasing awareness of prison administrations and staff about environmental, organizational factors that impact the health and well-being of prisoners, staff, and the wider community.<< Implementation >>The activities implemented trough M4Pris are Blueprint of Prison Staff Mentoring with state of the art scientific review, prison staff needs analysis, best practice collection and definition of a mentors profile; a Peer Mentoring programme for prison staff; a Training Course for Mentoring Coordinators; Management and implementation activities; and Dissemination activities.<< Results >>As results, M4Pris will produce a Peer Mentoring Programme for Prison Staff, a Training Course for Mentoring Coordinators, informed by a Project Blueprint – consisting of a state of the art review, mapping of prison staff needs, and mentors profile. The research and Peer Mentoring Programme Evaluation will be published as a scientific article. Moreover, one international event and one transnational training event, involving more than 40 participants, will result from the project.