This document discusses risks and prevention in the workplace. It outlines several factors that can increase risks, including human factors, organizational factors, and working environment factors. It then describes steps to eliminate or limit risks, recommending first eliminating risks, then replacing risks, eliminating risks at the source, implementing collective protective measures, reducing exposure time, and only as a last resort using personal protective equipment. The document also discusses the importance of communication and outlines measures employers should take before, during, and after work to prevent risks, including task analysis, risk assessment, communication measures, and special planning for high risk activities.