Flanders is one of the Belgian Regions.A Primary Health Care Conference in 2010 under the Flemish Minister of Wellbeing, Health and Family aimed to improve quality of the primary care by increasing professional cooperation.The Conference was prepared by six working groups of stakeholders: ICT, positioning, prevention, cooperation, care for talent, mental health care.A policy action was endorsed for a stronger primary mental health care in Flanders introducing a Primary Care Psychological Function PCPF.Seven projects in 5 provinces and in Brussels-Capital were implemented since 1 December 2011 including a wide variety of stakeholders and target groups.They have been renewed systematically, given the high demand for a PCPF and will run until February 28, 2019.Purpose: The purpose was to study the effectiveness of a primary care approach to non-complex psychological problems of a short duration, focusing on an accessible approach; increasing early detection and intervention and examining the cost-benefit ratio. The projects tested different formulas of approaches to maximize interdisciplinary and transmural cooperation according to the stepped care model. In parallel the relationship with the existing needs within our society (focus vulnerable populations) has been examined.Findings: The introduction of the PCPF can contribute to the improvement of the supply of primary mental health care, of accessibility, of cooperation with specialized mental health care and welfare services.The PCPF is pivotal for patient and primary care workers from GPs to various home care services. Specific attention is needed for vulnerable groups.The hands-on experience from the projects, a Flanders’ report investigating[i] the implementation of the PCPF and a report from the Federal Knowledge Centre for Healthcare on the organisational and financial model for psychological care demonstrate the need for a structural rollout of the PCPF[ii]. The feedback of the patients and the partners involved in the pilot projects is very positive. They ...