Final answer:
True, fall protection is required for employees at the edge of an unseen excavation that is 6' or deeper.
Step-by-step explanation:
True
Fall protection is required for employees at the edge of an excavation that is 6' or deeper and not readily seen because of a visual barrier. This requirement is enforced by OSHA (Occupational Safety and Health Administration) standards for worker safety.
OSHA's standards are designed to protect workers from various hazards, including falls. In construction sites, safety measures such as safety harness/line or guardrails are required to prevent workers from falling.