At what height above ground does OSHA require elevated work surfaces to have guards?

The Occupational Safety and Health Administration (OSHA) mandates that guardrails must be installed for elevated work surfaces that are at least 4 feet (1.2 meters) above the ground. This requirement is in place to protect workers from accidental falls, which are a significant hazard in many work environments, especially in construction and maintenance tasks. The stipulation for guardrails at this height ensures that there is a safety measure in place for those working at potential fall risks, thus enhancing overall workplace safety.

Other height options provided do not align with OSHA's regulations for requiring guards. Ensuring workers are protected at the 4-foot mark balances safety with practical considerations, as most elevated work scenarios begin to present substantial fall risks at this height.