This is the height at which fall protection is legally required. It varies significantly by industry and regulator:

• Federal OSHA – Construction (29 CFR 1926.501): 6 feet or more above a lower level for most activities.
• Federal OSHA – General Industry (29 CFR 1910.28): 4 feet or more above a lower level, or when working over dangerous equipment regardless of height.
• Cal-OSHA – General Industry (Title 8): Generally 7 1/2 feet from the perimeter of a structure, unprotected sides, and edges for most work, though some specific tasks may have lower limits.
• Cal-OSHA – Construction (Title 8): Generally 6 feet for most work. Note: Cal-OSHA has recently aligned its residential construction height with the 6-foot federal standard for all residential work 6 feet or more as of July 1, 2025.