Excavation and trenching work is one of the most hazardous operations in construction, with cave-ins posing the greatest risk. Safety measures are critical to protect workers. Here is a summary of key safety requirements and best practices, primarily based on the U.S. Occupational Safety and Health Administration (OSHA) standards. ⚠️ Primary Hazard: Cave-ins and Protective Systems The single most important safety measure is preventing a cave-in. Protective Systems Required: For trenches 5 fe