Ladder Safety at Work: The Rules, Checks and Common Mistakes
Ladders are not banned, and they never have been. Used for the right task, set up correctly and in good condition, a ladder is a perfectly legitimate tool. The problems start with the small, everyday shortcuts — and that is where most ladder falls actually come from.
Almost every British workplace has a ladder somewhere, and almost everyone assumes they already know how to use one. That familiarity is exactly why ladder falls remain so common. The Work at Height Regulations 2005 do not outlaw ladders, but they do set a clear test for when one is suitable and how it must be used. This article walks through that test, the checks that matter, and the mistakes people make without thinking.
When is a ladder the right choice?
Under the regulations, a ladder should be selected only when a risk assessment has shown that more suitable equipment is not justified because of the low risk and short duration of the task, or because of existing features of the site that cannot be altered. In plain terms, a ladder suits light, short-duration work — typically the kind of job measured in minutes rather than hours.
- Use a ladder for tasks where you can maintain three points of contact and do not need to carry heavy or awkward loads.
- Avoid a ladder where you would need to overreach, apply significant force, or stay aloft for a long period.
- Always make sure the ladder can be secured and that the ground beneath it is firm and level.
If the job fails any of these tests, the honest answer is usually that a different piece of equipment is needed — a point we expand on in our guide to choosing safe access equipment.
Pre-use checks
A pre-use check takes under a minute and should happen at the start of every working period and after anything that might have damaged the ladder. You are looking for obvious defects that would make the ladder unsafe.
What to look at
- Stiles — the side rails should not be bent, split or dented.
- Rungs — none missing, loose, bent or worn smooth.
- Feet — present, clean and not worn; mud or grease here is a slip waiting to happen.
- Locking mechanisms on stepladders — engaged and undamaged.
- Cleanliness — no wet paint, oil or mud on the rungs or your footwear.
If a ladder fails any check, take it out of use immediately and label it so nobody else climbs it.
The 1-in-4 angle and three points of contact
For a leaning ladder, the single most important set-up rule is the 1-in-4 angle: for every four units up, the base sits one unit out from the wall. That produces an angle of roughly 75 degrees. Too steep and the ladder can tip backwards; too shallow and the feet can slide out.
A leaning ladder should be footed, tied or otherwise secured, and it should extend about a metre above the landing point so there is something to hold while stepping on and off.
The second rule is three points of contact. While climbing or working, keep two feet and one hand — or two hands and one foot — on the ladder at all times. That is why carrying tools up by hand is discouraged; a tool belt or hoist line keeps your hands free. These habits are reinforced throughout a structured working at heights course.
Working at Heights training from £18
Self-paced, HSE-aligned, certificate the same day — £18 per person.
Common mistakes
Most ladder incidents are not freak accidents. They follow a small list of predictable errors:
- Overreaching instead of climbing down and moving the ladder. Keep your belt buckle within the stiles.
- Standing on the top rungs of a stepladder where there is nothing to hold and no margin for error.
- Resting a ladder against fragile or unstable surfaces, such as guttering or a plastic downpipe.
- Wrong footwear — worn, muddy or unsuitable soles that slip on the rungs.
- Carrying heavy loads that compromise balance and force you to break three points of contact.
- Using a damaged ladder because it was the nearest one to hand.
When to use something else
Recognising the limits of a ladder is part of using it safely. Where the work is long, repetitive, or requires both hands and significant force, a podium step, a mobile tower or a powered access platform will almost always be safer and more productive. The right call is not "ladder or nothing" — it is matching the equipment to the task.
Key takeaways
- Ladders are legal, but suit only light, short-duration tasks where more suitable equipment is not justified.
- Carry out a quick pre-use check of stiles, rungs, feet and locks before every working period.
- Set a leaning ladder at the 1-in-4 angle, secure it, and keep three points of contact while climbing.
- Avoid the common errors: overreaching, standing too high, fragile surfaces, poor footwear and damaged equipment.
- A £18 Working at Heights course builds these checks into a habit before anyone leaves the ground.
Ladder safety is not complicated, but it is unforgiving of complacency. A minute spent checking the ladder and setting it up correctly is the cheapest insurance any worker can buy against a fall.