OSHA 1926.501(b)(1): fall protection at unprotected sides and edges
Under 29 CFR 1926.501(b)(1), any construction worker on a walking or working surface with an unprotected side or edge 6 feet or more above a lower level must be protected by a guardrail system, a safety net system, or a personal fall arrest system.
Official text
(b)(1) Unprotected sides and edges. Each employee on a walking/working surface (horizontal and vertical surface) with an unprotected side or edge which is 6 feet (1.8 m) or more above a lower level shall be protected from falling by the use of guardrail systems, safety net systems, or personal fall arrest systems.Read the full section on eCFR
What it requires, in plain English
- The trigger height is 6 feet (1.8 m) above a lower level, measured from the walking/working surface.
- Acceptable protection is a guardrail system, safety net system, or personal fall arrest system meeting 1926.502.
- Leading edges, hoist areas, holes and other specific situations have their own paragraphs in 1926.501(b).
Where it shows up on site
- Slab edges on elevated decks before perimeter cable or guardrail goes up
- Guardrail removed for a delivery or a form move and not put back
- Open-sided mezzanines, landings and roof perimeters
Verify on site before you call it
A photo rarely shows every fact a standard depends on. Confirm these in person before treating the condition as a violation:
- What is the actual height of the slab above the lower level?
- Is the edge a leading edge under construction or a completed floor edge?
- What task is the worker performing and is fall protection present outside the frame?
- Has a competent person evaluated and verified fall protection for this edge?
Typical corrective actions
- Verify the slab height above the lower level and the edge status before continued exposure.
- If 6 feet or more and unprotected, install guardrail system, safety net system, or personal fall arrest system, or implement a compliant fall protection plan where infeasible.
- Have a competent person verify the selected fall protection system and its anchorage/installation before work continues.
Related standards
This guide summarizes federal OSHA construction standards for general information. It is not legal advice. States with their own OSHA-approved plans may set different or additional requirements; see federal and state coverage.