Caution

Ladder Safety Checklist

Ladders kill quietly — no dramatic height, no missing guardrail, just a base that slid or a top that was never tied. Subpart X sets condition and setup rules rather than a trigger height, and this checklist is those rules in the order you would actually walk a ladder.

Caution
Stencil print of an extension ladder tied off above a landing
Three feet of side rail above the landing, and the base set out one quarter of the working length.

The two numbers worth memorising

1926.1053(b)(1): when a portable ladder is used for access to an upper landing surface, the side rails shall extend at least 3 feet above the landing — or, where the ladder is too short for that, it shall be secured at the top to a rigid support that will not deflect, and a grasping device such as a grab rail provided.

1926.1053(b)(5)(i): a non-self-supporting ladder is used at an angle such that the horizontal distance from the top support to the foot is approximately one quarter of the working length — the four-to-one rule. Wood job-made ladders with spliced rails use one eighth.

Caution

Both numbers fail the same way: someone borrows a ladder that is one size short and leans it steeper to reach. That is two violations in one movement.

Why there is no ladder fall-protection height

Subpart M's 6-foot rule does not reach a worker on a portable ladder — OSHA regulates ladders through construction and use rules instead. That is why this list checks setup, condition and behaviour rather than asking whether anyone is tied off.

It also means the answer to "do I need a harness on a ladder?" is usually no under the federal standard, and usually yes under the general contractor's site rules. Check the site-specific safety plan for the job you are on.

Tagging a defective ladder

1926.1053(b)(16): portable ladders with structural defects shall be immediately marked in a manner that readily identifies them as defective, or tagged "Do Not Use" or with similar language, and withdrawn from service until repaired.

The wording matters less than the withdrawal. A tagged ladder left in the rack gets used by the next crew that cannot find a good one — put it in the truck.

Sources, with the date each was read