When must fall protection be provided on a construction site?

Fall protection must be provided on a construction site when working at heights of six feet or more, as specified by OSHA standards for the construction industry. This threshold is set due to the increased risk of injury from falls at this height and above. The requirement aims to mitigate the hazards associated with working at elevated surfaces, ensuring that appropriate safety measures, such as guardrails, safety nets, or personal fall arrest systems, are in place to protect workers.

While other options mention conditions related to fall protection, such as working near heavy machinery or inclement weather, they do not align with the specific regulations detailed in OSHA standards regarding fall hazards. Therefore, the six-foot threshold is the key standard that triggers the requirement for fall protection in construction environments.