Employees, faculty, staff, and students need to be encouraged to develop a genuine concern about their own health and safety. It's too easy to care less and become careless.
One of the most important ways to do this is through education into the nature and seriousness of particular hazards and their potential consequences. A good way to make your point is through the use of examples where others have in fact been seriously injured or killed doing the exact same activity. Serious injuries are why it's so very important for us to share our knowledge of these experiences.
As a teacher or supervisor, when you show a genuine concern for the health and safety of those that you supervise or teach, it encourages the development of their own concern.