Guide · Work at height

Working at height: the law, ladders and the myths.

Sources checked 6 minute readSources: Health and Safety Executive and legislation.gov.uk

In short

The Work at Height Regulations 2005 say work at height must be properly planned, supervised and carried out by competent people. Avoid work at height where you can, prevent falls where you cannot, and minimise the distance and consequences of any fall. Ladders are not banned: they can be the right choice for low-risk, short jobs. Fragile roofs and scaffolds need particular care.

Example

the gutter job that grew

Kerry and Jordan run a two-person roofing firm. A customer asked them to replace a length of gutter at the back of a two-storey terrace: a light job of about 20 minutes from a tied ladder. On site, Jordan found the fascia behind the gutter was rotten along the whole back wall. That meant two days of work with both hands busy. They stopped, explained the change to the customer and came back with a scaffold tower.

An illustrative example, not a real case.

Avoid, prevent, minimise

HSE's provisional figures show falls from height were the most common kind of fatal accident for workers in Great Britain in 2025/26, with 31 deaths. Regulation 6 sets the order:

  1. Avoid

    Do as much as you can from the ground, for example with extendable tools.

  2. Prevent

    Otherwise, use a safe existing place of work or equipment that stops falls, such as a scaffold with guard rails.

  3. Minimise

    Where a fall could still happen, reduce the distance and consequences, for example with safety nets.

Plan the work and use competent people

  • Plan the job, including the weather and how you would rescue someone (regulation 4).
  • Use competent people, or trainees supervised by someone competent (regulation 5).
  • Put collective protection, such as guard rails, before personal protection, such as a harness (regulation 7).
  • Check the working surface and edge protection before each use (regulation 13).

Ladders: the myth and the rules

Ladders are not banned. The law allows one where a risk assessment shows more suitable equipment is not justified, because the risk is low and the use is short, or because of site features you cannot change (Schedule 6). HSE guidance adds:

  • As a guide, stay on a ladder or stepladder for no more than 30 minutes at a time, carrying only light tools and materials.
  • Set leaning ladders at 1 in 4: one unit out for every four up.
  • Tie ladders used for access, and extend them at least 1 metre above the landing.
  • Do a pre-use check at the start of each working day.

Fragile roofs

Treat every roof as fragile until a competent person confirms it is not (HSE). Fibre-cement sheets and rooflights are common dangers.

  • Plan the work so nobody goes on or near a fragile surface, for example by working from below (regulation 9).
  • If someone has to, provide platforms, coverings or guard rails that take the load, and nets to limit a fall.
  • Put warning notices at the approach to any fragile surface.

Inspecting scaffolds and ladders

  • Construction working platform, such as a scaffold, where someone could fall 2 metres or more

    When to inspect
    After assembly and before use in that position, at least every 7 days, and after anything likely to affect its safety, such as high winds (regulation 12)
  • Ladders and stepladders

    When to inspect
    A pre-use check each working day, and regular recorded detailed inspections (HSE)

Note: A report of each platform inspection must be written before the end of the working period, provided within 24 hours and kept on site until the work is finished, then for 3 months (regulation 12).

What the courts have said

  • Robb v Salamis (M & I) Ltd [2006] UKHL 56

    A worker was hurt climbing down from his bunk on an oil rig because the ladder was not properly engaged in its fittings. The House of Lords held the employer breached the Provision and Use of Work Equipment Regulations 1998, as movement was foreseeable and the ladder should have been fixed in place: plan for careless use, not just correct use.

Common questions

Are ladders banned on building sites?

No. HSE says ladders and stepladders can be a sensible and practical option for low-risk, short-duration work, though they should not automatically be your first choice.

Do you need a certificate to use a ladder at work?

No. You need to be competent: to have the skills, knowledge and experience to use a ladder properly, or be trained under supervision. Training often happens on the job (HSE).

What counts as work at height?

Work anywhere you could fall a distance liable to cause injury if there were no precautions, including at or below ground level, such as beside an excavation. Using a permanent staircase does not count.

How often does a scaffold need to be inspected?

At least every 7 days, if it is a working platform used for construction work and someone could fall 2 metres or more from it. It must also be inspected by a competent person after it is put up and before it is used, and after anything likely to affect its safety, such as high winds (regulation 12 of the Work at Height Regulations 2005).

How long can you work on a ladder?

As a guide, no more than 30 minutes at a time. HSE recommends other equipment if a task would mean staying on a leaning ladder or stepladder for longer. Short duration is not the deciding factor: a ladder is only right where the risk is low too (Schedule 6 of the Work at Height Regulations 2005).

What angle should a ladder be at?

75 degrees. HSE calls this the 1 in 4 rule: one unit out at the base for every four units up. Rest the top against a strong surface, not glazing or plastic gutters. A portable ladder must be prevented from slipping, for example by tying it or using an effective stability device (Schedule 6 of the Work at Height Regulations 2005).

Do you have to keep one hand on a stepladder at all times?

No. HSE says you need three points of contact at the working position, but when both hands need to be free for a brief task, that can be two feet and your body supported by the stepladder. Keep a handhold available before and after, and keep the task light, with no side loading or overreaching.

How high should guard rails be on a scaffold?

At least 950 millimetres above the edge, for construction work. The intermediate rail must leave no gap bigger than 470 millimetres, and toe boards must be suitable and sufficient (Schedule 2 of the Work at Height Regulations 2005). HSE says a toe board at least 100 millimetres high would be acceptable.

How NXT-HSE can help

NXT-HSE can help you plan work at height, write RAMS that set out the right access equipment, and check how it is managed on your sites.

Sources

Sources checked 28 September 2026 against current Health and Safety Executive guidance and legislation. This guide is general information, not legal advice; your legal duties stay with your business.

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