[Psychiatric evaluation of functional and work capacity--why, when and how?].

Evaluation and support of functional capacity are an essential part of treatment and rehabilitation of mental disorders. The evaluation requires objective observations from the examination situation and functional environment and is best effected multi-professionally and in network collaboration. In addition to functional limitations it is important to elucidate the remaining functional capacity, resources, strengths and coping mechanisms of the examined person and the possibilities of the workplace to support continuation in the work. Functional activity, social environment and suitably planned working will support mental health, prevent dropouts and lowering of the quality of life.