The transfer of services will be ongoing over the next 12 months.
The Chief Executive of St John of God Community Services, Clare Dempsey says the decision has been taken due to a protracted and unresolved systemic underfunding crisis, that has undermined the organisation for over a decade.
The services cater for over 8,000 children, adolescents and adults with intellectual disability and mental health issues, employing 3,000 staff and volunteers in 300 locations across counties Wicklow, Dublin, Kildare, Kerry, Meath and Louth.
Over 2,500 of those impacted are in receipt of day, residential and respite services for people with a disability.
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