Working at height is one of the most familiar phrases in UK health and safety, and one of the most widely misunderstood. Most people picture scaffolding, roofs and ladders. The law sees it differently. Anyone working in a position where they could fall and injure themselves is working at height, whether that is a warehouse picker accessing a mezzanine, an office worker on a stepladder, a landlord clearing gutters, or a contractor on a flat roof.
Because the definition is broader than most employers realise, so are the legal duties that follow. The Work at Height Regulations 2005 apply across virtually every industry, not only construction. Getting the basics right protects workers, keeps businesses on the right side of enforcement, and avoids the cost and disruption of a serious incident.
This guide explains what counts as working at height, what the regulations require, who carries the duties, and what a competent approach to risk assessment and control actually looks like.
What Counts as Working at Height?
Under UK law, working at height means working in any place where, if there were no precautions in place, a person could fall a distance liable to cause personal injury. That definition is taken from the Work at Height Regulations 2005, and it deliberately avoids setting a minimum height threshold.
This catches more activities than most employers expect. Working at height includes:
- Work on ladders, stepladders, and podium steps
- Work on scaffolding, mobile towers, and mobile elevated work platforms (MEWPs)
- Work on flat roofs, pitched roofs, and fragile surfaces such as rooflights or asbestos cement sheets
- Work near unprotected edges or openings, including loading bays, lift shafts, and floor voids
- Work at ground level next to an excavation, pit, or other opening into which a person could fall
- Access to and from any of the above
There is no fixed minimum height. A fall from a low platform, the top step of a stepladder, or a single rung above ground level can still cause serious injury. The test is whether the activity carries a risk of falling far enough to be hurt, not whether the height feels high.
The Work at Height Regulations 2005 in Plain English
The Work at Height Regulations 2005 set out the legal framework for managing fall risk in the workplace. They apply to employers, the self-employed, and anyone who controls work at height. The aim is simple. Avoid work at height where it is reasonably practicable to do so. Where work at height cannot be avoided, use equipment and measures to prevent falls. Where the risk of a fall cannot be eliminated, use equipment or other measures to minimise the distance and consequences of a fall.
In practice, the regulations require duty holders to:
- Properly plan and organise work at height
- Take account of weather conditions that could endanger health and safety
- Ensure those involved are trained and competent
- Assess the risks from work at height and use the right type of equipment
- Ensure equipment is properly inspected and maintained
- Manage the risks from fragile surfaces
- Manage the risks from falling objects
The regulations do not prohibit working at height. They require that where it must be done, it is done properly. That distinction matters. Eliminating risk altogether is rarely realistic. Reducing it to a sensible, controlled level almost always is.
Who Has Duties Under the Regulations?
The Work at Height Regulations 2005 place duties on employers, the self-employed, and any person who controls work at height to any extent. That last phrase is broad on purpose. Responsibility does not stop with the employer of the person doing the work.
Duty holders typically include:
- Employers, who must ensure their employees and others affected by their work are protected
- The self-employed, who carry duties for their own safety and for anyone affected by their work
- Building owners and managing agents, where work is carried out on their premises
- Principal contractors and contractors on construction projects, where CDM duties apply alongside the Work at Height Regulations
- Landlords arranging maintenance work, particularly on roofs, guttering, chimneys, and external repairs
- Anyone arranging or commissioning the work, who must select competent contractors and provide relevant information
In many situations, more than one party has duties at the same time. A landlord engaging a roofer still has duties. A facilities manager arranging window cleaning still has duties. CDM clients on construction projects carry significant working at height responsibilities through their appointments and information provision. Where the work involves contractors, the duty to plan, coordinate and check is shared, not transferred.
The Hierarchy of Control: How the Law Expects You to Think About It
One of the most useful concepts in the Work at Height Regulations is the hierarchy of control. It sets out the order in which duty holders are expected to consider risk reduction measures, from most effective to least effective.
The hierarchy works as follows:
- Avoid work at height where reasonably practicable, for example by using extendable tools from the ground
- Prevent falls using an existing safe place of work, such as a permanent access platform with edge protection
- Prevent falls using work equipment, such as a scaffold tower or MEWP with guardrails
- Minimise the distance and consequences of a fall using collective protection, such as soft landing systems or safety nets
- Minimise the consequences of a fall using personal protection, such as a fall arrest harness with a suitable anchor point
- Provide instruction, training and supervision
The principle is straightforward. Collective protection that works for everyone on site is preferred over personal protection that depends on one person using their equipment correctly. Harnesses and lanyards have their place, but they sit lower in the hierarchy than guardrails, edge protection and properly designed access equipment for a reason.
When enforcement decisions are reviewed, this hierarchy is one of the first things assessors look at. The question is rarely whether anything was provided. It is whether the right type of control was selected for the risk involved.
Common Hazards When Working at Height
The most serious hazards in working at height are not always the obvious ones. Many incidents involve familiar tasks performed without proper planning rather than dramatic situations. Falls from height in construction remain a leading cause of serious injury and fatality across the UK, but the hazards extend far beyond building sites. Common hazards include:
- Falls from ladders, particularly during short tasks where workers do not feel a method statement is justified
- Falls through fragile surfaces, especially rooflights, old asbestos cement sheets, and skylights painted over and forgotten
- Falls from unprotected edges, including loading docks, mezzanine floors, and stair openings still under construction
- Falls from scaffolds that have been altered by unauthorised hands, are incomplete, or have not been inspected within the required interval
- Falling objects striking workers below, particularly where toe boards, brick guards, or exclusion zones are inadequate
- Adverse weather conditions including wind, rain, and ice, which can make otherwise safe access unsafe within minutes
- Inadequate rescue arrangements where personal fall protection is in use, leaving a suspended worker at risk of suspension trauma
Some of these hazards have very high fatality rates. Falls through fragile surfaces remain one of the most consistent causes of construction fatalities in the UK. Falls from ladders during short, supposedly low-risk tasks remain one of the most common causes of serious injury across all sectors, including warehouse and logistics environments where access to elevated racking is a daily activity.
What a Working at Height Risk Assessment Actually Involves
A working at height risk assessment is not a paperwork exercise. It is the document that records how a duty holder has thought about the work, identified the hazards, selected appropriate controls, and decided how to monitor those controls in use. Done properly, it should be specific to the task and location, and updated when conditions change.
A competent risk assessment for work at height typically covers:
- The nature of the task, including duration, frequency, and any unusual features
- The location, including the height involved, the surface to be worked on, and the environment around it
- The people involved, including their training, experience, and physical capability
- Equipment selection, including why the chosen access method is appropriate and how it will be inspected before use
- Edge protection and fall prevention measures, including guardrails, toe boards, exclusion zones, and signage
- Fall protection where prevention is not fully achievable, including harness systems, anchor points, and rescue arrangements
- Weather thresholds and stop-work conditions
- Supervision and inspection arrangements during the work
- Emergency procedures and first aid provision
Generic templates have their place as a starting point, but they cannot substitute for an assessment that reflects the actual task in front of you. Enforcement notices following falls from height frequently identify the absence of a task-specific assessment as a key failing, even where a generic document was on file.
Training, Competence and Supervision
The Work at Height Regulations require that those involved in work at height are trained and competent. Competence is not the same as a certificate. It combines knowledge, skill, experience, and the judgement to apply them sensibly in real situations.
In practice, competence requirements depend on the work involved. A worker climbing a stepladder to change a light fitting needs to understand safe ladder use, condition checks, and when to stop. A worker erecting a scaffold needs formal training to the appropriate level. A site manager planning multi-trade work at height needs to understand the regulations, the hierarchy of control, and how to coordinate contractors. Supervisors need the authority and confidence to stop work that is no longer being carried out safely.
For organisations with construction or site-based responsibilities, supervisor and manager training that covers working at height in context is one of the most reliable ways to build day-to-day competence into how work is planned and overseen. Our CITB training courses include working at height awareness as part of the wider site safety syllabus, helping supervisors and managers apply the regulations on the ground.
Getting Working at Height Right in Your Business
The most effective working at height arrangements are not the ones with the longest documentation. They are the ones where duty holders have genuinely thought about each task, selected proportionate controls, made sure the people doing the work are competent, and built in time to check that controls are still working as intended.
For most businesses, a practical starting point looks like this:
- Identify all current and foreseeable work at height activities across your premises and operations
- Review whether any of those activities could be eliminated through different methods or equipment
- Where work at height is unavoidable, confirm that risk assessments are task-specific and reflect current conditions
- Confirm that the people doing the work are competent for the specific tasks they carry out
- Confirm that supervision arrangements are clear and that supervisors have the authority to stop unsafe work
- Ensure equipment is suitable, inspected, and maintained in accordance with the manufacturer’s requirements and the regulations
- Review rescue arrangements where personal fall protection is in use
Where gaps are identified, addressing them does not need to be disruptive. Most issues are matters of planning, training, and clearer accountability rather than expensive engineering changes. Bringing in a competent person to review your arrangements is often a faster route to compliance than working through it in isolation, particularly where the business covers multiple sites, premises, or types of activity.
Getting Support With Working at Height
Mast Safety supports employers, principal contractors and duty holders across the UK with practical advice on working at height. Whether you need a fresh review of current arrangements, support developing task-specific risk assessments, or ongoing competent person services, our team can help you get working at height genuinely under control.
If you would like to discuss your arrangements, speak to our team today, or take a look at our Health & Safety Consultancy and Construction Health & Safety services to see how we can support your business on an ongoing basis.
