Ladder Safety at Work: Rules, Checks and Mistakes

When is a ladder the right choice?

A ladder is not banned, but it is not a default either. Under Irish work-at-height law, a ladder should only be used after you have considered whether a safer option — such as a tower, podium step or platform — would suit the task better. As a rule of thumb, ladders are appropriate for short-duration, light work where you can maintain three points of contact and where a more stable platform would be disproportionate.

If the task involves heavy materials, awkward reaching, or someone standing on a ladder for long stretches, the ladder is probably the wrong tool. This decision belongs in your risk assessment, not in a snap judgement on site. For the bigger picture, see our complete guide to working at heights in Ireland.

The pre-use check

Every ladder should be inspected before it is used — not weekly, not monthly, but each time. A quick, consistent check catches most defects before they cause a fall.

• Stiles: the side rails should be straight, not bent, split or dented.
• Rungs or steps: all present, secure, clean and free of mud, grease or paint.
• Feet: in place, not worn smooth, clean and gripping the surface.
• Locking mechanisms: on stepladders and extension ladders, working and fully engaged.
• General condition: no corrosion, no makeshift repairs, no missing components.

A defective ladder should be taken out of use immediately and clearly labelled so no one picks it up by mistake. A two-minute check is always cheaper than a fall.

Rules for safe use

Once you have the right ladder and it has passed its check, safe use comes down to a handful of disciplines that should become second nature.

• Place the ladder on firm, level ground and secure it against slipping — tie it at the top, or have it footed.
• Set a leaning ladder at the correct angle, roughly one unit out for every four units up.
• Maintain three points of contact and keep your body within the stiles — do not overreach.
• Carry tools in a belt or hoist them up, keeping your hands free for climbing.
• Only one person on a ladder at a time, and never use the top few rungs as a step.

The mistakes that cause falls

Most ladder accidents are not freak events; they follow a familiar pattern. Overreaching to one side until the ladder tips. Resting a ladder on a fragile or unstable surface. Using a damaged ladder because it was the nearest one. Standing on the top step of a stepladder. Climbing in unsuitable footwear or in high wind. Each of these is avoidable, and each is far more likely when no one has been trained to recognise the danger.

Storage and maintenance

Ladders last longer and stay safer when stored well. Keep them under cover, off the ground, supported along their length so they do not sag, and away from heat sources or corrosive chemicals. A simple register of your ladders, with the dates of their formal inspections, makes it easy to spot when one is due for review or retirement.

Stepladders versus leaning ladders

The two main types of ladder fail in different ways, so they call for slightly different care. A leaning ladder relies on being secured and set at the right angle; its classic failure is slipping at the base or sliding sideways at the top. A stepladder is self-supporting but narrow, and its classic failures are tipping when someone overreaches, or collapsing because the locking stays were not fully engaged. With a stepladder, face the work, keep your knees below the top of the steps, and never stand on the very top platform unless it is specifically designed and rated to be stood on.

For both types, the surface beneath matters as much as the ladder itself. Soft ground, wet floors, loose mats and uneven paving all undermine an otherwise sound ladder. Spend a moment checking what the feet are standing on before you climb.

Working near other hazards

A ladder rarely exists in isolation. Doors that could be opened into it, passing traffic, overhead electrical lines and busy walkways all multiply the risk. Where a ladder is used in a thoroughfare, cordon off the area or post someone to keep it clear. Near electricity, use a non-conductive ladder and keep well away from live lines. These surroundings should be considered in the same risk assessment that decided a ladder was suitable in the first place.

Training makes the difference

Knowing how to choose, check and use a ladder is part of broader work-at-height competence. A short course gives everyone the same baseline, so the pre-use check and safe-use rules become habit rather than guesswork. To understand why ladders sit where they do in the order of safe options, read our explainer on preventing falls from height and the hierarchy of control.