“Do my guys need harnesses on a one-story roof?” The federal rule does not count stories. It measures the drop. For residential construction, 29 CFR §1926.501(b)(13) says: “Each employee engaged in residential construction activities 6 feet (1.8 m) or more above lower levels shall be protected by guardrail systems, safety net system, or personal fall arrest system unless another provision in paragraph (b) of this section provides for an alternative fall protection measure.” If the edge your crew works near is six feet or more above the ground or the deck below, the rule applies. Measure it.
Why this rule leads OSHA’s list
OSHA’s preliminary list of its most frequently cited standards, covering October 1, 2025 to August 31, 2026, puts “Fall Protection, general requirements (29 CFR 1926.501)” first. Safety+Health, the National Safety Council’s magazine, reported 4,041 violations of it and called it the leader “for the 16th consecutive fiscal year.” Two more rules from this article are on the same list: ladders fifth, and fall protection training (§1926.503) eighth, with 1,273 violations. Scaffolding, another way of working at height, is fourth.
The citations follow the deaths. OSHA’s fall campaign page puts it in capitals, “FALLS ARE THE LEADING CAUSE OF DEATH IN CONSTRUCTION,” and counts “389 fatal falls to a lower level out of 1,034 construction fatalities” in 2024, from BLS data. The Bureau of Labor Statistics’ own summary for 2024 counts 370 deaths from falls, slips and trips among construction and extraction workers.
Who the rule protects
OSHA’s rules are duties of employers to their employees. OSHA’s coverage page says the law “covers most private sector employers and their workers,” and that those not covered include “self-employed workers.” An owner working alone is outside it. The day you send an employee up a ladder, you are inside it. In states that run their own OSHA-approved programs, the state plan must be “at least as effective as the Federal OSHA program,” so read your state’s rules as well.
What counts as residential, and which roof you are on
OSHA’s residential FAQ uses a two-part test: “The end-use of the structure being built must be as a home, i.e., a dwelling; and the structure being built must be constructed using traditional wood frame construction materials and methods.”
On roofs, the slope changes the menu. A low-slope roof is one with “a slope less than or equal to 4 in 12”; a steep roof is “greater than 4 in 12.”
The three systems, and the details inspectors check
Guardrails. The top rail sits at “42 inches (1.1 m) plus or minus 3 inches” above the working level, and the system must withstand “a force of at least 200 pounds” at the top edge (§1926.502(b)).
Safety nets. Allowed wherever the rule lists them; §1926.502(c) sets how they are hung and used.
Personal fall arrest. A harness, a connector and an anchor. The anchor must be “capable of supporting at least 5,000 pounds (22.2 kN) per employee attached,” or be designed as part of a complete system with “a safety factor of at least two” under the supervision of “a qualified person” (§1926.502(d)(15)). The system must be rigged so a worker “can neither free fall more than 6 feet (1.8 m), nor contact any lower level.” Body belts are out: “As of January 1, 1998, the use of a body belt for fall arrest is prohibited.” And a harness alone is not a plan: “The employer shall provide for prompt rescue of employees in the event of a fall or shall assure that employees are able to rescue themselves” (§1926.502(d)(20)).
The fall protection plan: an exception, not a shortcut
Residential work has one way out of the three systems. When the employer “can demonstrate that it is infeasible or creates a greater hazard to use these systems,” it may use a fall protection plan under §1926.502(k). The rule’s note sets the bar: “There is a presumption that it is feasible and will not create a greater hazard to implement at least one of the above-listed fall protection systems,” and “the employer has the burden” of showing otherwise.
The plan itself must be “prepared by a qualified person and developed specifically for the site,” kept current, with “a copy of the fall protection plan with all approved changes” kept at the job site. It must document “the reasons why the use of conventional fall protection systems…are infeasible or why their use would create a greater hazard,” and it runs “under the supervision of a competent person.” Roof brackets and slide guards do not replace the three systems on their own; OSHA’s FAQ says “slideguards cannot simply be used in lieu of conventional fall protection methods,” though they “may be used as part of a written, site-specific fall protection plan.”
Ladders, gutters and the estimate visit
Ladders have their own rules in a separate subpart, and they are fifth on OSHA’s list. Four that matter on every house:
Gutter crews work both ways: from a ladder, under the ladder rules, and on the roof, where the rules define a roof as a walking/working surface like any other. A worker on the roof hanging gutters next to an edge six feet or more up is under the six-foot rule. Cleaning may be a different case: OSHA defines construction work as “work for construction, alteration, and/or repair, including painting and decorating” (29 CFR 1910.12(b)), and work outside that falls under its general industry rules, where the general trigger for an unprotected side or edge is “4 feet (1.2 m) or more above a lower level” (29 CFR 1910.28(b)(1)).
One exception matters to estimators. Section 1926.500(a)(1) says the fall protection subpart does “not apply when employees are making an inspection, investigation, or assessment of workplace conditions prior to the actual start of construction work or after all construction work has been completed.” Those words describe looking before the work starts; they stop the moment the work does. The exception is written into the fall protection subpart and does not mention the ladder rules, which sit in a separate subpart, so set the ladder up right either way.
Training, and the paper that proves it
Section 1926.503 requires “a training program for each employee who might be exposed to fall hazards,” given by “a competent person.” The proof is a “written certification record” with the employee’s name, the date of the training, and the signature of the trainer or the employer. When you have reason to believe a trained worker does not have the understanding and skill the rule requires, you must retrain. This rule was eighth on OSHA’s list; a sign-in sheet you can find is the cheapest fix in this article.
What a citation can cost
OSHA’s penalty page lists the maximum amounts that may be assessed after January 15, 2026: $16,550 per serious violation, and $165,514 per willful or repeated violation. Those are ceilings, not what every citation costs, but they are the numbers the law allows.
Put it in the price
OSHA’s fall campaign is built on three words, plan, provide and train, and the first comes with a line about money: “When estimating the cost of a job, employers should include safety equipment, and plan to have all the necessary equipment and tools available at the construction site.” Anchors, harness replacement, guardrail set-up time and the time to rig and unrig are part of what the roof costs you. Price them in, the way Pricing a Roof by the Square prices pitch and tear-off, so the safe way is never the money-losing way. The roofing and gutter pages show how those trades price their work.
General information, not legal or tax advice. Rules change and vary by state; check with the agency named above or a professional for your situation.