Preventing Falls from Height with the hierarchy of control, made simple.
Falls from height are consistently the leading cause of fatal injury to workers in Great Britain, according to HSE statistics. Learn how to apply the WAHR 2005 hierarchy - avoid, prevent, minimise - through proper Working at Heights Training. CPD certified, RoSPA assured and IIRSM approved, with an instant digital certificate.
Stop falls before they start, for the rest of your working life.
A fall takes a second and changes everything. This course teaches the hierarchy of control that stops falls before they happen.
- Avoid, prevent, minimise, in plain language
- Guardrails, platforms and fall arrest explained
- Certificate valid for 3 years UK-wide
Most falls from height are preventable.
Falls happen when work at height is unplanned, when the wrong equipment is chosen, or when edges, openings and fragile surfaces are left unprotected. Falls from height are consistently the leading cause of fatal injury to workers in Great Britain, according to HSE statistics, and serious injuries happen at low heights too.
The good news is that falls are preventable. With proper Working at Height Training, workers learn the WAHR 2005 hierarchy of control and how to apply it: avoid the work at height where possible, prevent the fall where you cannot, and minimise the consequences where some risk remains.
This guide explains how the hierarchy works, the role of guardrails and working platforms, and why fall arrest is always the last resort rather than the first choice.
What actually causes falls from height
Understanding the causes helps you take preventive action today. These factors drive most falls in UK workplaces.
Unplanned work
Quick jobs done without planning are where falls cluster. A two minute task at height deserves the same thought as a two day one.
Wrong equipment
A ladder used where a podium or tower was needed, or a pallet on forks used as a platform. Equipment shortcuts cause falls.
Unprotected edges
Open edges, floor openings and stairwells without guardrails are falls waiting to happen, especially in changing work areas.
Fragile surfaces
Roof lights, cement sheets and corroded roofing give way without warning. Fragile surfaces must be identified before anyone steps near them.
Weather and conditions
Wind, rain, ice and poor light all raise fall risk. Work at height should be rescheduled when conditions make it unsafe.
Poor maintenance
Equipment that is not inspected - damaged ladders, worn harnesses, missing guardrail components - fails when it is needed most.
Overreaching and rushing
Stretching past the stiles, carrying loads while climbing and racing the clock all move your centre of gravity past the point of recovery.
Lack of training
Workers who have never been taught the hierarchy of control cannot apply it. Untrained workers take risks they do not recognise.
How to prevent falls: work the hierarchy.
WAHR 2005 sets the order of decisions for every task at height. Start at the top and only move down when the step above is not reasonably practicable.
Avoid work at height
The safest option is not to go up at all. Use extendable tools from the ground, lower equipment for servicing, or assemble at ground level and lift into place.
Use an existing safe place
Where height is unavoidable, work from a place that is already safe - a permanent platform with guardrails, a flat roof with parapets, or a fixed walkway.
Prevent falls with collective protection
Guardrails, toe boards and barriers protect everyone in the area without relying on individual behaviour. Collective measures always come before personal ones.
Prevent falls with work equipment
Choose equipment that prevents the fall: working platforms, tower scaffolds, MEWPs and podium steps with guardrails built in.
Use work restraint
Where edges cannot be guarded, a restraint system with a fixed length lanyard stops the worker reaching a position from which they could fall.
Minimise fall distance
Where some fall risk remains, reduce the distance and consequences - nets and soft landing systems close to the working level catch a fall early.
Fall arrest as the last resort
A harness and energy absorbing lanyard catches a fall that has already happened. It needs a suitable anchor, clearance below, trained users and a rescue plan.
Protect people below
Whatever level you work at, use toe boards, tool lanyards, netting and exclusion zones so falling objects cannot injure anyone underneath.
Why guardrails and platforms beat harnesses every time.
Collective protection - guardrails, toe boards, barriers and proper working platforms - protects everyone in the area, all the time, without anyone having to do anything. It does not depend on a harness being fitted correctly, an anchor being chosen well or a rescue team being ready.
That is why WAHR 2005 puts collective measures above personal ones. A compliant working platform with guardrails removes the fall risk for every person who steps onto it, from the most experienced supervisor to the newest starter.
- Guardrails with top rail, mid rail and toe board
- Working platforms strong enough for people and materials
- Barriers and covers over openings and fragile surfaces
- Inspection before use and after any alteration
- Exclusion zones protecting the area below
Fall arrest: the safety net, not the plan.
Fall arrest does not prevent a fall. It catches one that has already started, which means the fall, the forces and the suspension all still happen. A fall arrest system is only acceptable when avoiding the work and preventing the fall are not reasonably practicable.
Used properly, it needs a suitable anchor point, a correctly fitted harness, an energy absorbing lanyard, enough clearance below, and a rescue plan that gets a suspended person down quickly. Practical harness training may be legally required for these tasks and is not replaced by an online course - our training makes that distinction clear.
- Use restraint before arrest wherever possible
- Inspect harnesses and lanyards before every use
- Never work in arrest without a rescue plan
How the hierarchy of control works in practice
The hierarchy is a sequence of questions asked in order, for every task. Can we avoid going up at all? If not, can the person work from a place that is already safe? If not, can we prevent the fall with guardrails, platforms or restraint? Only when the answer to all of those is no does minimising the consequences - nets, soft landing systems and finally fall arrest - come into play.
Avoid: the step most often skipped
- Extendable tools - poles for cleaning, painting and inspection keep feet on the ground.
- Ground level assembly - build at ground level and lift into position with appropriate plant.
- Relocating equipment - move valves, filters and controls to accessible positions during design or refit.
- Cameras and drones - inspect roofs and structures without putting a person up there.
The most effective fall prevention measure in the world is the task you redesign so nobody has to leave the ground.
Prevent: guardrails, platforms and restraint
Where work at height cannot be avoided, prevention measures stop the fall from happening:
- Guardrails and edge protection - a top rail, mid rail and toe board around every open edge and opening, installed before work begins and inspected regularly.
- Working platforms - scaffold platforms, tower scaffolds and MEWP baskets that give a stable surface with protection built in.
- Podium steps - a guarded platform for low level work that removes the open sides of a stepladder.
- Covers and barriers - secured, labelled covers over floor openings and barriers keeping people away from fragile surfaces.
- Work restraint - a harness and fixed length lanyard that physically stops the worker reaching the edge.
Minimise: when some risk remains
Where prevention is not reasonably practicable, the duty becomes minimising the distance and consequences of a fall. Safety nets and soft landing systems installed close under the working level catch a fall after centimetres rather than metres. Personal fall arrest - the harness, energy absorbing lanyard and anchor - is the final layer, and it only works as a system: anchor strength, clearance below, pre-use checks, trained users and a rehearsed rescue plan all have to be in place before the first foot leaves the ground.
Protecting people below the work
Fall prevention includes objects, not just people. Toe boards stop tools sliding off platforms, tool lanyards tether kit to the user, debris netting catches small items, and exclusion zones keep everyone clear of the drop zone. A spanner from height injures just as surely as a fall.
The role of Working at Heights Training
Working at Heights Training is not just good practice, it is how workers learn to apply the hierarchy automatically. Proper awareness training teaches:
- How to recognise fall risks, including edges, openings and fragile surfaces
- How the hierarchy of control orders every decision: avoid, prevent, minimise
- Why collective protection comes before personal protection
- How to select the right equipment for the task
- What emergency and rescue procedures need to be in place
Our online Working at Heights Course covers all of these topics in approximately 45 minutes across 3 modules. You can complete it from any device and receive your certificate instantly on passing. It is awareness training - practical, equipment-specific training such as MEWP or harness courses may also be required for some tasks.
Fall prevention questions, answered.
Short, clear answers to the questions workers and employers ask us most often about preventing falls from height.
What is the hierarchy of control for work at height?
Why are guardrails better than a harness?
When is fall arrest acceptable?
What counts as a working platform?
Do I need to protect people below the work area?
Is fall prevention training a legal requirement?
What is the difference between fall restraint and fall arrest?
Working at height training, wherever you work.
One online Working at Heights Course - CPD accredited, RoSPA assured and IIRSM approved - available in every UK city and every industry. Pass the assessment and your Working at Heights Certificate arrives the same day, valid for 3 years.
Looking for working at height training, a complete working at heights course, or an official working at heights certificate? You are in the right place. Study working at heights online in around 45 minutes, pass the 20 question assessment, and download your verifiable digital certificate the same day.
Renewing? The working at heights refresher course brings your knowledge of fall prevention and safe access right up to date. Curious how accreditation works? Our CPD accredited working at height course page explains CPD, RoSPA and IIRSM in plain language. And if you are starting from scratch, read what working at height actually means under the Work at Height Regulations 2005.
Working at heights courses in every major UK city
Pick your city and take the same accredited Working at Heights Course, written with your local industries and workforce in mind.
Working at height training for every UK industry
The same Working at Heights Course, grounded in the real tasks people do at height, from healthcare estates to heavy industry.
Healthcare estates
Working at height training for hospital estates and maintenance teams who use ladders, podiums and MEWPs for lighting, ceilings and building repairs across NHS and private sites.
Warehousing & logistics
Fall prevention awareness for warehouse staff working from ladders, order pickers and mezzanines, and for teams maintaining high racking in distribution centres.
Retail & supermarkets
Working at heights certificates for shopfitters and store maintenance teams using stepladders and podiums for signage, stock and ceiling work during fit-outs and refurbishments.
Construction
Work at height awareness for labourers and trades on scaffolds, towers, roofs and MEWPs - the sector where falls from height cause the most serious harm.
Manufacturing
Working at height training for production and maintenance staff accessing plant, gantries, silos and overhead services across engineering and heavy industry.
Hospitality
Working at heights course for hotel and venue teams who change high-level lighting, dress function rooms and maintain buildings from ladders and towers.
Facilities & cleaning
Work at height training online for window cleaners, facilities staff and contractors working from ladders, podiums and MEWPs on building exteriors and atriums.
Agriculture & farming
Working at heights certificate for farm workers and contractors climbing onto barns, grain stores and machinery, where fragile roofs are a known killer.
Every working at heights resource we offer
Training, certification, refresher, online study and practical guides - all on one accredited platform.
Learn to prevent falls, get trained today.
Master the hierarchy of control that stops falls before they happen. Complete your Working at Heights Training in around 45 minutes and download your certificate straight away.
More working at heights safety resources
Deeper guides on ladder safety, equipment types and the full Working at Heights Course.
