Occupational safety and health (OSH), also known as occupational health and safety (OHS), is concerned with protecting the safety, health, and welfare of people engaged in work or employment. The goals of OSH programs include fostering a safe work environment by minimizing risks and maximizing quality of life. Employers have a legal duty to ensure the safety of their employees. An OSH management system helps organizations systematically eliminate workplace hazards to benefit both worker safety and productivity. Hazards refer to any source of potential harm and include biological, chemical, ergonomic, and psychological threats. Following safety rules helps reduce risks to injuries.