This chapter presents the principles for understanding the human aspects of occupational health and safety, and illustrates practical procedures for applying these principles to achieve significant improvements in organizational and community-wide safety. The Comprehensive ergonomics approach to safety refers essentially to any adjustment of working conditions or equipment in order to reduce the frequency or probability of an environmental hazard or at-risk behavior. An essential ingredient in these programs was a diagnostic survey or environmental audit by employees which led to specific recommendations for eliminating hazards that put employees at risk or promoted at-risk behaviors. For group problem solving approach, operations personnel met voluntarily to discuss safety issues and problems, and to develop action plans for safety improvement. For the programs in Management audits category, designated managers were trained to administer a standard International Safety Rating System. This system evaluates workplaces based on 20 components of industrial safety.