For the treatment of addictive disorders, work, leisure, and social participation were used as occupation-based interventions.

All social participation interventions used in treating addictive disorders elicited better outcomes than control and/or treatment as usual groups.

Occupation-based social participation and leisure interventions yielded small effect sizes on Addiction Severity Index and Beck’s Depression Inventory.

Integrating occupation-based interventions into the treatment plans of persons with addictive disorders may elicit small but significant improvements.