Work substantially contributes to one's identity. It provides income for an individual and their family and gives the feeling of playing a useful role in society. However, the nature of work is changing rapidly and factors such as the globalization of markets, urbanization and migration, and the advancements in information technology are impacting on the nature of work and the health and mental health of employees. This module outlines the types of mental health problems encountered in the workplace, their causes and impact. Importantly, it provides guidance to workplaces on how to develop and implement a workplace mental health policy and strategies to improve the mental health of employees.