Objective — Eighteen years after the 1978 reform law no. 180, psychiatric services have to find new roles and goals in the social arena, in order to continue to effectively pursue the improvement of mental health in the commi nity. The aim of the present paper is to show some theoretical and practical elements that could stimulate in the psychii trie services a deep consideration about the relationship between psychiatric services and «private social» bodies, part cularly social co-operatives and voluntary organisations. Method — The elements shown in this study come from an ani lysis: a) of the literature about the crisis factors of the Italian welfare state, particularly in the Public Health Service and i the social assistance; b) of the literature about the development of the «private social» and about the relationship with tl public services; c) of national and regional laws, particularly of Veneto region; d) of the present experiences in Sout Verona Psychiatric Service. Results — The crisis of the traditional welfare state, the emergence in large sectors of gener; population of needs related to social fragmentation and relational impoverishment, the aspiration of a great number (individuals excluded from society to benefit of the right to full citizenship, all this urgently questions the traditional roh and responsibilities, the organisation, operational modalities, and the community orientation of existing health and hi man services. Within this framework, the relationship between psychiatric services (or, broadly speaking, public serviet in general) and «private social» bodies, particularly social co-operatives and voluntary organisations, has become part of a foreseeing, strategic new awareness of mental health workers. Conclusion — A shift from a relationship of mutual exploitation between organisations, to one of co-operation between them, each considering the other as an equal partne may be a critical step forward a new model of welfare. This, in turn, would hopefully meet the needs for health of th population in terms of efficiency, quality, relevance and consideration of the users' resources and social competencies.