Workplace health and safety incidents inflict costs to both individuals and societies as a whole. A number of such incidents are described, including workplace stress, accidents, violence, suicides, active shooters, major disturbances, toxic employees and unsafe working conditions. Fortunately, there is increasing interest in occupational health and safety issues. Investing in occupational health and safety benefits both workplaces and societies in general. Examples of a range of initiatives for reducing such incidents are offered, including creating safety cultures, reducing levels of experienced stress, investigation of incidents, increasing employee voice, violence and suicide prevention initiatives, and trauma counselling.