29 CFR 1910.23 Ladders: Fall Protection, Inspection, and Training

29 CFR 1910.23 is OSHA’s ladder standard for general industry, and the ladder requirements in 29 CFR 1910.23 cover the physical design of rungs, steps, side rails, and clearances; the way workers must climb; and the conditions under which portable, fixed, and mobile ladders may be used. It works with 29 CFR 1910.28 (fall protection for tall fixed ladders) and 29 CFR 1910.30 (training), and violations are enforced through OSHA’s civil penalty structure.

Rules That Apply to Every Ladder

Section 1910.23(b) sets the baseline. Rungs, steps, and cleats must be parallel, level, and evenly spaced when the ladder is in position for use. Spacing runs 10 to 14 inches center to center on most ladders, and 8 to 12 inches on stepstools.¹

Ladder surfaces have to be free of puncture and laceration hazards: no exposed bolt ends, sharp edges, or splintered wood. Portable metal ladders must have rungs and steps that are corrugated, knurled, dimpled, or coated with a skid-resistant material.¹

The regulation also tells workers how to climb. Employees must face the ladder going up and down, keep at least one hand on it at all times, and avoid carrying anything that would throw off their balance. Training materials often call this the three-point contact rule, but the standard itself lists the three duties separately.¹

Portable ladders may never be loaded past their maximum intended load, and fixed ladders must be capable of supporting theirs. That load includes the worker plus every tool and material they carry up.¹

Portable Ladders

Section 1910.23(c) is built around stability. A portable ladder may only be used on a stable, level surface unless it is secured or stabilized against displacement. On slippery surfaces it must be secured and fitted with slip-resistant feet or an equivalent measure. Both side rails have to be supported, unless the ladder was designed with a single support.¹

The standard forbids several familiar workarounds:

Standing on the top step or cap of a stepladder.
Moving, shifting, or extending a ladder while someone is on it.
Tying or fastening ladders together for extra height, unless they were designed to connect.
Placing a ladder on a box, barrel, or other unstable base to gain reach.
Using single-rail ladders at all.

Each prohibition can support its own citation if an inspector observes it.¹

Setting the Angle

Extension ladders and other non-self-supporting ladders should sit at a 4-to-1 ratio: one foot of base for every four feet of height to the upper support. That ratio is stated in OSHA’s construction standard, 29 CFR 1926.1053, and inspectors apply it as a recognized safe practice in general industry as well.²

Metal Ladders and Electricity

29 CFR 1910.333 requires that employees be protected from contact with energized electrical parts, including indirect contact through conductive objects.³ A metal ladder is the textbook conductive object. Where live equipment is anywhere in the picture, use a non-conductive fiberglass ladder instead.

Fixed Ladders

Section 1910.23(d) governs ladders permanently attached to a building, tank, tower, or other structure. The minimum clearance between the centerline of the rungs and the nearest permanent object behind the ladder is 7 inches. Elevator pit ladders are an exception at 4.5 inches. Where a through-ladder or side-step ladder ends at a landing, the side rails must extend at least 42 inches above that level.¹

Fall Protection Over 24 Feet

Fall protection on tall fixed ladders lives in 29 CFR 1910.28(b)(9), not in 1910.23 itself. Any fixed ladder extending more than 24 feet above a lower level requires fall protection, and the options depend on the installation date:⁴

Installed before November 19, 2018: personal fall arrest system, ladder safety system, cage, or well.
Installed on or after November 19, 2018: personal fall arrest system or ladder safety system. Cages and wells are no longer acceptable on new installations.
When a ladder section, cage, or well is replaced, the replacement must include a personal fall arrest system or ladder safety system in at least that section.
By November 18, 2036, every fixed ladder over 24 feet must have a personal fall arrest system or ladder safety system; remaining cages and wells used as the sole means of fall protection must be replaced or supplemented.

Cages on older ladders remain compliant in the meantime, unless a replacement triggers the earlier upgrade.⁵

Mobile Ladder Stands and Platforms

Section 1910.23(e) covers rolling units with an elevated work surface. Steps must be at least 16 inches wide, and every step and platform must have a slip-resistant surface.¹

Rail requirements scale with height:

Mobile ladder stands with a top step 4 feet or higher: handrails 29.5 to 37 inches above the front edge of a step.
Mobile ladder stands above 10 feet: the top step must be protected on three sides by a handrail at least 36 inches high. If the top step is 20 inches or more deep, a midrail and toeboard are also required.
Mobile ladder stand platforms 4 to 10 feet: handrails at least 36 inches high with midrails in the platform area.
Mobile ladder stand platforms above 10 feet: guardrails and toeboards on all exposed sides and ends.

Removable gates or non-rigid members like chains may substitute in special-use applications.¹

Every mobile unit needs a locking mechanism that keeps it from rolling while someone is on it, and it has to engage before the worker steps onto the unit. Weight-actuated casters and manual brakes are the common designs.⁶

Inspection, Tagging, and Repair

Under 1910.23(b)(9), every ladder must be inspected before its first use in each work shift, and more often if conditions call for it. The check is visual: cracked side rails, corroded fasteners, bent rungs, missing feet, damaged locking mechanisms.¹ The regulation does not use the term “competent person” for these daily inspections; what matters is that someone actually does the check before workers start climbing.

When a defect turns up, the ladder must be tagged immediately with “Dangerous: Do Not Use” or similar language and pulled from service.¹ Store it where no one will grab it by mistake. It stays out until it is repaired or replaced. Structural repairs fall under the general maintenance requirement in 29 CFR 1910.22(d), and the ladder must be restored to safe condition before anyone uses it again.⁷

Training

29 CFR 1910.30 requires employers to train each employee who faces a fall hazard on how to recognize the hazard and minimize it. Workers who use fall protection equipment must be trained on its proper use, inspection, and maintenance, and the training has to be delivered in a way the employee can clearly understand.⁸

Retraining is required when:

Workplace changes make previous training outdated or inadequate.
New or different fall protection equipment is introduced.
An employee’s behavior shows they no longer understand how to use the equipment safely.

That last trigger is easy to miss. A supervisor who sees a worker on the top cap of a stepladder is looking at a retraining trigger, not just a moment to correct.⁸

Penalties

OSHA adjusts its maximum penalties annually. As of the January 15, 2025 adjustment:⁹

Serious violation: up to $16,550 per violation.
Other-than-serious violation: up to $16,550 per violation.
Willful or repeated violation: up to $165,514 per violation.

A missing guardrail on a mobile ladder stand or an untagged defective ladder would typically be cited as serious. Willful citations, reserved for employers who knowingly ignore a hazard or show plain indifference to employee safety, carry penalties roughly ten times higher.¹⁰

1
Occupational Safety and Health Administration. 29 CFR 1910.23 – Ladders
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Occupational Safety and Health Administration. 29 CFR 1926.1053 – Ladders
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Occupational Safety and Health Administration. 29 CFR 1910.333 – Selection and Use of Work Practices
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eCFR. 29 CFR 1910.28 – Duty to Have Fall Protection and Falling Object Protection
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Occupational Safety and Health Administration. Standard Interpretation – Personal Fall Arrest System or Ladder Safety System on Fixed Ladders
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Occupational Safety and Health Administration. Working Safely with Mobile Ladder Stands and Mobile Ladder Stand Platforms
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eCFR. 29 CFR 1910.22 – General Requirements
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eCFR. 29 CFR 1910.30 – Training Requirements
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Occupational Safety and Health Administration. US Department of Labor Announces Adjusted OSHA Civil Penalty Amounts for 2025
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Occupational Safety and Health Administration. OSHA Penalties