Working at Height: The Rules That Keep You Alive

‍‌​​‌‌‌‌​‌​‌​‌​‌​‌​‌​‌‌‌‌‌‌​​‍> Disclaimer: SiteKiln gives you plain-English information, not legal or health and safety advice. Always follow your site-specific risk assessments and talk to a qualified professional.

The short version

Any job where you could fall far enough to get hurt counts as "work at height" and has to be properly planned, supervised and done with the right kit under the Work at Height Regulations 2005.

You have the right to refuse clearly unsafe work at height, and your employer or the main contractor must design the job so you avoid height where possible and prevent or minimise falls where you can't.

Why it matters

Falls from height are still the top killer on UK construction sites, especially on small jobs with ladders, towers and "temporary" edge protection.

Most incidents are not freak accidents -- they're the same patterns: no guardrails, dodgy towers, fragile roofs, rushing in bad weather. The law expects you to break that pattern by planning the job and choosing safer ways of working.

If someone falls, HSE will go straight to the Work at Height Regulations and ask what the client, principal contractor, contractor and workers actually did to follow them.

The basic rules in plain English

Under the Work at Height Regulations 2005, anyone who controls work at height (employers, self-employed, contractors) must make sure that all work at height is:

• Properly planned and organised (including rescue plans).
• Done by competent people (including supervision).
• Risk assessed, with appropriate equipment chosen and used.
• Set up so fragile surfaces and falling objects are properly controlled.
• Done with equipment that's inspected and maintained.

The regs apply where a fall "liable to cause personal injury" could happen -- not just big heights. That includes low roofs, small scaffolds, mezzanines, deep excavations and fragile surfaces.

The hierarchy: avoid, prevent, minimise

Every working-at-height job should follow this order -- you only move down the list if the step above really isn't practicable.

Avoid working at height if you can

• Use long-reach tools from the ground.
• Fit items before lifting them up.
• Design in safe access at the planning stage so you don't need risky temporary solutions.

If you can't avoid it, prevent a fall

• Use proper working platforms with guardrails and toe boards (scaffold, properly set up towers, MEWPs).
• Use existing safe places (e.g. roofs with permanent edge protection).

If you still can't eliminate the risk, minimise distance and consequences

• Use fall-restraint or fall-arrest systems, nets, air bags or soft landing systems where appropriate.
• Keep work areas small and controlled, and limit time spent at height.

Ladders and steps are not banned -- but they sit low in the hierarchy. They should only be used for short-duration, light-duty work where other safer options aren't reasonably practicable, and they must be in good condition and properly secured.

Ladders -- when they're OK and when they're not

OK to use ladders when:

• The job is low risk and short duration (rough guide: no more than about 30 minutes at a time at one spot).
• You can maintain three points of contact most of the time and you're not handling heavy loads.
• The ladder is industrial grade, in good condition, set at about 75° (1 in 4 rule), on firm level ground and secured.

Not OK to rely on ladders when:

• The work is long-duration, heavy, or needs both hands for tools and materials for extended periods.
• You're working on or near fragile surfaces, or where a fall would be especially nasty (onto railings, traffic, machinery).
• The ladder is damaged, wobbly, not long enough, not secured, or you're tempted to stand on the top rungs or stretch sideways.

If the job clearly needs a platform, tower, podium or MEWP, a ladder is the wrong bit of kit no matter how convenient it feels.

Who is responsible for what at height?

On a typical small job:

• Client / person having the work done: must allow enough time and money and appoint competent people -- they can't demand you do obviously unsafe working-at-height shortcuts.

• Principal contractor / main builder: must plan, manage and monitor all work at height on the job; choose safe access methods; make sure towers/scaffolds/MEWPs are suitable, erected by competent people, and properly inspected.

• Contractors / small firms: must plan and manage their own working-at-height tasks, train their workers, provide the right equipment and check it is used properly.

• Workers (including you if you're on the tools): must follow training and instructions, use the kit provided, look after equipment, and report hazards -- and not climb or improvise on obviously unsafe setups.

If you're self-employed or run a small LTD, you often wear both hats -- you're the person in control of the work and you're also a worker -- so both sets of duties land on you.

Your rights if working at height is unsafe

You're not expected to gamble your neck because someone wants to save scaffold money.

If you're asked to work at height with no safe access, no guardrails, on fragile roofs without proper measures, or in high winds or extreme conditions, that can be a serious and imminent danger situation (see 4.1).

Under health and safety and employment law, you can refuse to do that work until it's made safe, and you should not be punished for that if your belief is reasonable.

You can also raise concerns internally, through your safety rep if you have one, and ultimately with HSE if the risk is serious and nothing changes.

If the kit is there but being mis-used (e.g. guardrails removed "just for a minute"), you still have a duty to stop and get it put back -- going along with a bodge doesn't protect you if there's an accident.

Typical bad setups and what should happen instead

A few scenarios you see all the time:

Single plank on trestles over a drop

• Bad: no guardrails, loose boards, no toe boards, clutter underneath.
• Should be: a properly boarded working platform with guardrails/toe boards, or a scaffold/tower/MEWP sized for the job.

Fragile roof "I'll just nip out" job

• Bad: walking straight onto old asbestos or fibre-cement sheets with no protection.
• Should be: avoid walking on the roof at all by working from below or from MEWP; if access is unavoidable, use staging, guardrails, and nets or harnesses as per HSE guidance.

Ladder as a workstation

• Bad: 45 minutes of drilling and fixing from the top rung with no tie-off.
• Should be: ladder tied or footed, used for very short tasks only, with a better access option (tower, podium, platform steps) used for longer work.

No inspection of access kit

• Bad: towers and scaffolds built once and left unchecked for weeks.
• Should be: pre-use checks, formal inspections at suitable intervals, and after events like high winds or alterations.

What to do on your next job

Use this quick checklist:

Before you start:

• Identify all work at height on the job -- roofs, scaffolds, towers, ladders, mezzanines, excavation edges.
• Decide if you can avoid some of it entirely with different methods or sequencing.
• Choose access equipment that matches the job (duration, frequency, load, environment), not just what's cheapest or already on the van.

On site:

• Check scaffolds, towers and ladders before use; don't use anything obviously damaged or incomplete.
• Keep platforms tidy, with guardrails and toe boards in place.
• Watch weather, especially wind, rain and ice, and stop or change methods if it becomes unsafe.
• Make sure everyone working at height knows what to do if someone falls or is left hanging in a harness (rescue plan).

Personally:

• If you're not happy with a height setup, say so before you climb -- it's much easier to fix from the ground.
• If you're told to "just get on with it" on an obviously unsafe setup, you're within your rights to refuse and ask for it to be made safe first.

What to do next

• Walk around your current job and list every task that involves working at height -- including the ones you might have been winging.
• Check your ladders, towers and harnesses are in date for inspection -- if there's no inspection record, sort one now.
• Price proper access equipment into your next quote instead of relying on ladders for everything.
• Make sure everyone on your team knows what to do if someone falls and is left hanging in a harness (suspension trauma kills fast).
• If you're not happy with a height setup, say so before you climb -- it's always easier to fix from the ground.

Sources

• Work at Height Regulations 2005 -- duties on employers and workers for all work at height.
• Health and Safety at Work etc. Act 1974 -- general duties.
• Construction (Design and Management) Regulations 2015 -- planning and management of construction work.
• HSE -- Working at height overview and brief guide for employers and workers.

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