A 4-year prospective study was carried out on 53 chronically mentally ill patients living in a differentiated complementary residential complex. Our main question was how the lives of these patients develop, as reflected in their psychological wellbeing, working capacity, therapeutic requirements and any necessary periods of rehospitalization. At the end of a 4-year rehabilitation period, 50% of the patients were living in sheltered communities and about 25% on their own. Only 10% had returned to the psychiatric hospital as long-term patients. The psychological findings were characterized by apathetic, depressive and psycho-organic syndromes (AMDP system) and were subject overall to minimum variation. Very few patients succeeded in obtaining work on the general labour market, but the work available on the sheltered labour market was suitable for a large proportion (40%) of them. All patients were undergoing medical care after 4 years. Patients suffering from chronic mental disorders can be cared for in the community even after long-term hospitalization. Special success has been achieved with rehabilitation in the residential sphere. Adequate care implies numerous services to ensure that patients are integrated into the labour market, to help establish contacts and to enable chronically ill patients to take part in social and cultural life. Most patients retain a considerable degree of psychological disturbance and are permanently dependent on psychiatric therapy or psychosocial care. On the other hand, they benefit from the fact that their living circumstances are largely normal and that they have higher degree of personal autonomy.