Problems at workplace with psychiatric subjects are increasing and the role of occupational physicians is basic to achieve a suitable job role. The purpose of this study is to assess the main occupational factors and to evaluate the judgement of fitness to work in 1109 patients with psychiatric diseases examined in our outpatients department during the period 2000-2012. These subjects were sent to our service by family doctors or, more frequently, by the companies seeking for judgement of the working residual capacities. The psychiatric diseases were classified according to the DSM IV; for each group considered, we evaluated the production sector, the specific job role, the pharmacological therapy as compared to the final judgement. The most frequent diagnoses were depressive and anxious disorders. The pharmacological therapy does not seem to be related to the final judgement but the small number of subjects defined as unfit to work does not allow a final evaluation. The study suggests the relevance of team work among the different actors of prevention to achieve a successful management of these workers in a specific job role.