Background: Post-overdose outreach has emerged in the United States as an increasingly common response to non-fatal overdose. This qualitative study investigates the implementation of such programs through public health-public safety partnerships in Massachusetts

Results: Results: Forty-nine interviews were conducted, including 15 police officers (80% male, 100% non-Hispanic White); 23 public health partners (48% male, 87% non-Hispanic White); 8 overdose survivors who received outreach services and 3 parents of survivors who received services (collectively 27% male, 64% non-Hispanic White). Implementation factors identified across all levels (macrosystem, exosystem, mesosystem, and microsystem) of Ecological Systems Theory included key program facilitators, such as access to police data and funding (macro), interagency collaboration (exo), shared recognition of community needs (exo), supportive relationships among team members (meso), and program champions (micro). Common barriers included inherent contradictions between policing and public health mandates (macro), poor local treatment and service capacity (exo), divergent staff views of program goals (exo), overdose survivors’ prior negative experiences with law enforcement (meso), difficulty locating overdose survivors (meso), and police officers’ lack of qualifications or training in providing psycho-social services (micro).

Summary: Most post-overdose outreach programs in this study were dependent on funding and data-sharing partnerships, which police agencies largely controlled. Yet, police participation, especially during outreach visits presented numerous challenges for engaging overdose survivors and establishing non-coercive linkages with evidence-based services, which may undermine the public health goals of these programs. These findings should inform state and federal efforts to expand the role of law enforcement in behavioral health initiatives