Mental health problems are the result of a complex interplay between biological, psychological, social and environmental factors. Most common mental health problems are depression, anxiety, substance abuse and stress. They are affecting employees, their families and co-workers, and the broader community. Globally, an estimated 264 million people suffer from depression, one of the leading causes of disability, with many of these people also suffering from symptoms of anxiety. A recent World Health Organization-led study estimates that depression and anxiety disorders cost the global economy US$ 1 trillion each year in lost productivity. There is increasing evidence that both the content and context of work can play a role in the development of mental health problems in the workplace. The symptoms have a direct impact on workplaces through increased absenteeism, presenteeism, reduced productivity, and increased healthcare costs. Therefore, the workplaces that promote mental health and support people with mental disorders are more likely to reduce absenteeism and presenteeism, increase productivity, and benefit from associated economic gains.