A Narrative Review of Factors Influencing Peer Support Role Implementation in Mental Health Systems: Implications for Research, Policy and Practice

With increasing calls to incorporate recovery principles into conventional mental health care, the importance of peer support worker (PSW) services has gained attention. However, studies consistently show that PSWs remain underutilized. Although research addresses several factors that influence formal implementation of their role, there is lack of a comprehensive framework that synthesizes the factors and addresses their interlevel interactions. This paper provides a narrative review and synthesis of literature on multilevel factors that influence formal PSW role implementation in mental health systems. We conducted a search of literature and reviewed 38 articles that met inclusion criteria. Our thematic analysis involved identifying first and second order categories that applied across studies, and developing third order interpretations through iterations. We synthesized the findings in a multilevel framework consisting of macro, meso and micro level influences. Influencing factors at the macro level include broader socio-cultural factors (medical model, recovery values, professional power dynamics, training and certification), regulatory and political factors (policy mandates, political commitment), and economic and financial factors (funding, affordability of services). Factors at the meso level include organizational culture, organizational leadership, change management, and human resource management policies. Micro level influences pertain to relationships between PSWs and team members, and PSW wellbeing. Interlevel interactions are also outlined. Limitations and implications for research, policy and practice are addressed.