Abstract
The Method for the Empowerment of Trauma Survivors (METS) is a recovery-oriented group intervention tailored to refugees and asylum seekers who experienced traumatic events. This study explores how undocumented migrants in the Netherlands experience participation in METS, how these experiences relate to changes in their mental well-being, and which aspects of the intervention participants find most valuable. A qualitative case study was conducted involving in-depth, individual interviews with undocumented migrants who participated in METS. Interviews focused on participants’ experiences with the intervention and perceived changes in mental well-being. Five main themes emerged: connectedness, group dynamics, personal development, emotional well-being, and practical aspects. Changes in mental well-being were often subtle, difficult to articulate, and in some cases temporary. While some participants reported positive developments, many continued to face significant challenges and did not experience notable improvement. No participants reported negative outcomes as a result of participation. METS appears suitable for a heterogeneous population with diverse cultural, religious, and educational backgrounds. Reported benefits often related to group participation rather than METS-specific characteristics. Future research is warranted to further explore whether METS is a valuable addition to existing transdiagnostic psychosocial group interventions.