SN 65 - The Use of Warning Lines Alone For Fall Protection on Low Sloped Roofs

This OSH Standards Notice provides an interpretation regarding when warning lines alone are acceptable for fall protection on low-sloped roofs (29 CFR 1926, Subpart M - Fall protection. 

Also reference SN 74 - Fall Protection Requirements for Work Involving Dry Laid Masonry Retaining Walls, STD 03-11-002 - Compliance Guidance for Fall Protection in Residential Construction, and OSHA Technical Manual (TED 01-00-015). Additional information can be found on the safety and health topic page for Fall Protection.