Excavation work at construction sites can expose workers to serious hazards, including trench collapses, falling materials, underground utility damage, water accumulation, and hazardous atmospheres. Before excavation begins, contractors should assess soil conditions, identify underground electrical cables and pipelines, and determine appropriate protective measures. Depending on the excavation conditions, suitable systems such as sloping, benching, shoring, or shielding should be provided to prevent cave-ins. Excavated soil, equipment, and heavy vehicles should be kept away from excavation edges at safe distances based on site conditions and applicable requirements.

Construction teams should provide safe access and exit points, inspect excavations regularly and after events that may affect stability, and control unauthorized entry. Workers should never enter an excavation that has not been assessed and made safe. Where hazardous atmospheres or water accumulation are possible, appropriate monitoring and control measures must be implemented. Proper planning, competent supervision, and effective protective systems help prevent excavation accidents and protect construction workers.