Occupational safety and health is an area concerned with protecting the safety, health and welfare of people engaged in work or employment. The goals of occupational safety and health programs include to foster a safe and healthy work environment.[…] Physical hazards are a common source of injuries in many industries.[4] They are perhaps unavoidable in many industries such as construction and mining, but over time people have developed safety methods and procedures to manage the risks of physical danger in the workplace.

Source: http://en.wikipedia.org/wiki/Occupational_safety_and_health#Workplace_hazards