This study describes an inquiry concerning patients (65 in all) who were referred to the Socio-Professional Rehabilitation Department (CHS Le Vinatier, Bron) over 14 months. The aim was to study the influence of occupational therapy on the clinical evolution of psychotic patients, and more specifically on their quality of life. Two evaluations using questionnaires filled out both by the patients and the medical staff were performed. One evaluation was carried out at admission, and the second 3 months later. The studied variables were the patients' symptoms, quality of life and ability to perform a task. Validation studies showed the answers to questionnaires to be reliable indicators. It was found that this group of psychotic patients was anxious rather than depressed, and fairly autonomous; their dissatisfaction mainly concerned material conditions. The initial factors most related to quality of life after 3 months of treatment were mainly connected with their ability to perform a task, and to a lesser extent with the initial gravity of symptoms.