What is a leading edge under OSHA?
In the construction fall protection standard, 29 CFR 1926.500, a leading edge is the edge of a floor, roof or formwork that changes location as sections are placed, formed or constructed. It counts as an unprotected side and edge when it is not actively and continuously under construction.
By Cairn. Updated . Sources: eCFR text as of October 27, 2026.
The legal definitions
Fall protection, 29 CFR 1926.500
“Leading edge means the edge of a floor, roof, or formwork for a floor or other walking/working surface (such as the deck) which changes location as additional floor, roof, decking, or formwork sections are placed, formed, or constructed. A leading edge is considered to be an “unprotected side and edge” during periods when it is not actively and continuously under construction.”
Steel erection, 29 CFR 1926.751
“Leading edge means the unprotected side and edge of a floor, roof, or formwork for a floor or other walking/working surface (such as deck) which changes location as additional floor, roof, decking or formwork sections are placed, formed or constructed.”
Where it applies
- 29 CFR 1926.501, Duty to have fall protection 3 paragraphs use the term. Read the text on eCFR.
- 29 CFR 1926.502, Fall protection systems criteria and practices 7 paragraphs use the term. Read the text on eCFR.
- 29 CFR 1926.760, Fall protection 5 paragraphs use the term. Read the text on eCFR. Not the same definition: 29 CFR 1926.751 defines it for steel erection as the unprotected side and edge of a floor, roof or formwork that changes location as sections are added. Quoted above.
In the enforcement record
Federal and state-plan agencies issued 98,889 cited violations under 29 CFR 1926.501, Duty to have fall protection, from January 2016 through September 10, 2026. The section is the most cited of the 248 sections of 29 CFR cited at least 50 times. This is the count for the whole section, not for the term alone.
Cairn data, October 2026 snapshot.
See the full record for 29 CFR 1926.501Sources
- 29 CFR 1926.500, Scope, application, and definitions applicable to this subpart. eCFR, text as of October 27, 2026.
- 29 CFR 1926.751, Definitions. eCFR, text as of October 27, 2026.
- Cairn data, October 2026 snapshot. Cairn analysis of the OSHA enforcement record.
Written by Cairn, updated . The quoted text is copied from the sources above. A test compares each quotation with a stored copy of the source, and a separate script compares that copy with the live sources. This page explains the law and is not legal advice.