Jobsite Night Work and Low Visibility Safety

• Workers not seen by drivers or equipment operators
• Poor lighting around walking paths, edges, or work areas
• Increased traffic exposure during nighttime work
• Reduced visibility from rain, fog, dust, snow, or glare
• Fatigue and reduced alertness during night shifts
• Trips, falls, or struck-by incidents caused by unseen hazards

Night work and low visibility conditions change the risk of a jobsite. Hazards that are easy to see during the day may be hidden by darkness, shadows, glare, rain, fog, dust, or poor lighting.

Lighting should be planned before work begins. Work areas, walking paths, ladders, excavation edges, traffic control devices, equipment routes, and material storage areas all need enough light for workers to see hazards clearly.

High-visibility clothing is especially important during night work. Workers need to be visible to drivers, equipment operators, spotters, and other crew members.

Glare can create hazards just like darkness. Light towers, headlights, work lights, reflective surfaces, wet pavement, and flashing lights can make it difficult to see workers, signs, or equipment movement.

Traffic control should be checked carefully during low visibility work. Drivers need more time to recognize lane shifts, workers, cones, signs, trucks, and equipment.

Communication becomes more important at night. Workers may be farther apart, harder to see, and more affected by equipment noise, radios, or weather.

Fatigue should be monitored during night shifts and early morning work. Reduced alertness can affect driving, equipment operation, decision-making, and reaction time.

Night work safety requires active control of visibility. Light the work, stay visible, communicate clearly, manage fatigue, and stop to adjust the setup when workers or hazards cannot be seen.

• Provide adequate lighting for work and walking areas.
• Wear high-visibility clothing appropriate for the conditions.
• Check for glare, shadows, and blind spots.
• Inspect traffic control visibility after setup.
• Use clear communication between workers and operators.
• Watch for fatigue during night work.
• Stop work if hazards cannot be seen clearly.

• Is lighting adequate for the actual task and walking path?
• Can workers be seen by drivers and equipment operators?
• Are glare or shadows hiding hazards?
• Is traffic control visible far enough in advance?
• Are workers showing signs of fatigue during the shift?