The University of Chicago Hub is conducting a multisite trial called ROMI (Reducing Opioid Mortality in Illinois) to study the effectiveness of case management approaches that link individuals with community-based treatment services upon release from jail. The ROMI intervention includes peer recovery coaches to improve linkages to medications for opioid use disorder (MOUD), supportive services, naloxone distribution, and harm reduction services for justice-involved individuals with opioid use disorder (OUD). The study utilizes a hub-and-spoke model anchored at the University of Illinois at Chicago to help unify the delivery of OUD treatment and harm reduction services across four jails and two prisons throughout Illinois. The goal of the study is to examine the effectiveness of these case management approaches combined with peer recovery coaches to improve MOUD retention and outcomes.