Determining the Effectiveness of Working Out Dads to Reduce Mental Health Difficulties in Fathers of Young Children

Inclusion Criteria: * Be aged 18 years or older * Be biological or step-father, or male caregiver of a child aged 0-4 years * Be in regular weekly contact with the child, even if non-resident parent * Be sufficiently fluent in English to complete surveys and participate in the intervention * Have mental health difficulties above the symptomatic cut-point (score of 20+) on the K10. AND/OR • Have at least two risk factors for poor mental health/suicide including: (a) history of mental health difficulties; (b) relationship difficulties; (c) high work-related stress; (d) unemployment; or (e) have a child with sleep difficulties, a disability, chronic illness or other special health care need. Exclusion Criteria: * Has a severe mental health disorder - self reported psychosis, substance use dependency, prescribed anti-psychotic medication that may require more intensive mental health interventions and treatment * Has an overt indicator of family violence - self-reported intervention order or court case for family violence * Has child protection service involvement