The costs of mental ill-health for individuals, employers and society at large are enormous. Mental illness is responsible for a very significant loss of potential labour supply, high rates of unemployment, and a high incidence of sickness absence and reduced productivity at work. Following an introductory report (Sick on the Job: Myths and Realities about Mental Health and Work) and nine country reports, this final synthesis report summarizes the findings from the participating countries and makes the case for a stronger policy response.