OSHA 1926.451(g)(1): fall protection on scaffolds
Under 29 CFR 1926.451(g)(1), each employee on a scaffold more than 10 feet above a lower level must be protected from falling to that lower level. For most supported scaffolds that means a guardrail system or a personal fall arrest system; some scaffold types have their own required combination.
Official text
(g)(1) Each employee on a scaffold more than 10 feet (3.1 m) above a lower level shall be protected from falling to that lower level. Paragraphs (g)(1) (i) through (vii) of this section establish the types of fall protection to be provided to the employees on each type of scaffold. Paragraph (g)(2) of this section addresses fall protection for scaffold erectors and dismantlers.Read the full section on eCFR
(g)(1)(vii) For all scaffolds not otherwise specified in paragraphs (g)(1)(i) through (g)(1)(vi) of this section, each employee shall be protected by the use of personal fall arrest systems or guardrail systems meeting the requirements of paragraph (g)(4) of this section.Read the full section on eCFR
(g)(4)(ii) The top edge height of toprails or equivalent member on supported scaffolds manufactured or placed in service after January 1, 2000 shall be installed between 38 inches (0.97 m) and 45 inches (1.2 m) above the platform surface. The top edge height on supported scaffolds manufactured and placed in service before January 1, 2000, and on all suspended scaffolds where both a guardrail and a personal fall arrest system are required shall be between 36 inches (0.9 m) and 45 inches (1.2 m). When conditions warrant, the height of the top edge may exceed the 45-inch height, provided the guardrail system meets all other criteria of paragraph (g)(4).Read the full section on eCFR
What it requires, in plain English
- The trigger is a scaffold platform more than 10 feet (3.1 m) above a lower level.
- Scaffolds not specifically listed in (g)(1)(i) through (vi) need personal fall arrest systems or guardrail systems that meet 1926.451(g)(4).
- On supported scaffolds manufactured or placed in service after January 1, 2000, the toprail top edge sits between 38 and 45 inches above the platform surface.
- Fall protection for scaffold erectors and dismantlers is handled separately under 1926.451(g)(2).
Where it shows up on site
- A frame scaffold with the end guardrails left off at the return
- Midrails or toprails removed to land material and not replaced
- Workers on a mast-climbing or suspended platform without a harness tied off
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 platform height above the lower level?
- What type of scaffold is it: supported frame, suspension, ladder jack, or another type with its own rule?
- Is the worker using the scaffold, or erecting or dismantling it under 1926.451(g)(2)?
- Is a personal fall arrest system in use outside the frame of the photo?
Typical corrective actions
- Keep workers off the open side or end until guardrails or personal fall arrest are in place.
- Reinstall missing toprails, midrails and end rails on all open sides and ends of the platform.
- Confirm the required combination of guardrail and personal fall arrest for the scaffold type in use.
- Have the competent person check the scaffold before it is returned to use.
Common questions
At what height does OSHA require fall protection on a scaffold?
Under 1926.451(g)(1), fall protection is required for each employee on a scaffold more than 10 feet (3.1 m) above a lower level.
Is a guardrail enough on a scaffold, or is a harness also required?
For scaffolds not otherwise specified in (g)(1)(i) through (vi), either a guardrail system meeting (g)(4) or a personal fall arrest system is acceptable. Certain types, such as single-point and two-point adjustable suspension scaffolds, have their own required protection in those paragraphs.
Turn the observation into a notice
Record what the photo shows, confirm the on-site checks above, and identify the responsible company and due date. Use the fillable construction safety notice template or follow aworked example from observation to verified fix. Cirqify can draft the notice from your circled photo for you to review.
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.