[Incapacity to work due to mental disorders-economic, individual, and treatment-specific aspects]

The changes in the modern work environment are accompanied by specific stressors that can have a negative impact on employees' mental health. In line with this, the proportion of sick-leave days due to mental disorders has recently risen to 17.7% compared to 10.9% in 2007, which in 2021 was associated with costs of 42.9 billion euros due to losses of gross value and productivity.Based on current health economic studies, this review provides an overview of the economic impact of incapacity to work and early retirement due to various mental disorders in Germany. In absolute figures, expenditure on incapacity to work is particularly high for common mental illnesses such as affective and anxiety disorders. Rarer mental disorders such as post-traumatic stress disorder and eating disorders cause high costs in relation to their low prevalence, particularly due to sickness benefit payments.In addition to these economic implications, the consequences of incapacity to work, early retirement, and unemployment are examined at an individual level and explanatory approaches for the specific psychosocial stresses are presented. The latter highlights the need for scientifically substantiated treatment methods. Certified treatments have proven to be efficient in reducing the number of sick-leave days, particularly for common mental disorders. This applies even more to workplace-related interventions, which appear to be superior to conventional methods in this respect. Workplace-based therapies incorporate work-related models and focus on the planning of reintegration into the workplace. Further naturalistic studies are needed to test the transferability of the effectiveness of these treatments to other disorders.