This unit covers the topics related to occupational health and wellbeing in organisations, emphasizing the principles of good work design and the practical means to integrate occupational health and safety, health promotion, wellness, work design, and productivity. Topics cover common occupational health hazards such as manual tasks and the interaction of risk factors (environmental health exposures), office-based work environments and sedentary work behaviours, and psychosocial hazards (occupational stress, workplace bullying, occupational violence, and shift-work and fatigue), as well as basic but integrated principles for human factors; ergonomics; workplace wellness, health, and wellbeing programs; and return to work.