What is Considered ‘Working at Height’ Under UK Law?

Working at height remains one of the biggest causes of serious injury and fatal accidents in UK workplaces. Many people still assume it only applies to ladders or working on roofs, but the legal definition includes much more than that. A large number of everyday tasks fall under working at height without workers or employers even realising it.

This guide explains exactly what is classed as working at height under UK law, how it is defined by the Health and Safety Executive (HSE), and why it matters, discussing practical examples, common misconceptions, and what the law means for employers, site managers, contractors and workers.

What is Working at Height?

Working at height refers to any work activity where a person could fall from one level to another and be injured if proper precautions were not in place. The aim of the legislation is to reduce the risk of falls, which continue to be the leading cause of fatal injuries in UK workplaces. The Health and Safety Executive defines working at height as: “Work in any place where, if precautions were not taken, a person could fall a distance liable to cause personal injury.”

This definition is deliberately broad. It covers far more than just ladders and scaffolding. According to the most recent HSE data, falls from height account for over a quarter of fatal injuries to workers in 2024/25. This is why working at height is heavily regulated and why employers are expected to take a structured, risk based approach.

Working at height can include work:

• Above ground level
• Below ground level where a fall could occur
• Near open edges or unprotected sides
• Around fragile surfaces that could give way

The legal framework that governs this area is the Work at Height Regulations 2005, which apply across all industries and workplaces.

What Defines Working at Height?

Working at height is defined by risk, not by how high you are. If there is a realistic chance of someone falling and being injured, it is likely to be classed as working at height. It is a common misconception that only tall structures count. In practice, many tasks carried out at relatively low heights are still covered by the regulations.

Examples that define working at height include:

• Working on ladders or stepladders
• Operating mobile elevating work platforms such as cherry pickers and scissor lifts
• Working on roofs of any height
• Working from scaffolding or access towers
• Working near open edges, floor openings or fragile surfaces
• Working on loading bays or mezzanine floors
• Working above excavations, pits or inspection chambers
• Accessing plant, machinery or warehouse racking systems
• Installing, maintaining or removing equipment from elevated platforms

Working at height is also common across a wide range of industries, not just construction. Typical examples include:

• Construction and building work
• Window cleaning and facade maintenance
• Warehouse operations and logistics environments
• Building and facilities maintenance
• Tree surgery and arboriculture

Even falls from relatively low heights can result in serious injury, especially onto hard surfaces or near machinery. That is why the regulations focus on preventing falls entirely where possible, rather than simply providing protection after a fall occurs.

What is Not Included in the Definition of Working at Height?

While the definition of working at height is wide, not every activity that involves a change in level is covered. Some situations are often misunderstood and are not normally classed as working at height when they are part of normal building design and use. Situations not normally considered working at height include:

• Walking up or down a permanent staircase in a building
• Using a fixed ramp that forms part of the workplace
• Standing at ground level where there is no risk of falling to a lower level

That said, context matters. If a staircase is damaged, poorly lit, or slippery, it could still present a risk that needs to be managed under general health and safety duties.

Is There a Minimum Height to be Classed as ‘Working at Height’?

No. There is no minimum height specified in UK law. A task does not need to be a certain number of metres above the ground to be classed as working at height. If a person could fall and be injured, even from a short distance, it can still fall under the Work at Height Regulations. This is why activities such as working from the back of a vehicle, a low platform, or a step ladder are often included.

What Do Working at Height Laws Mean for Employers and Dutyholders?

The Work at Height Regulations 2005 place clear legal duties on employers, dutyholders and those who control work at height activities.

In practice, this means employers must ensure that:

• Work at height is avoided where reasonably practicable
• Where it cannot be avoided, the risks are properly assessed
• Suitable equipment is selected and maintained
• Collective protection such as guardrails or platforms is prioritised
• Falls are prevented where possible and the consequences minimised where they are not
• Anyone involved in working at height is competent to do so

A key part of compliance is ensuring workers are properly trained. Training gives workers the knowledge to recognise risks, use equipment correctly, and follow safe systems of work. This is where recognised training programmes play a critical role in managing risk and demonstrating compliance. Examples include:

• IPAF training for MEWP operators
• IPAF safety harness training
• IPAF 3a and 3b training
• IPAF 1a and 1b training
• PASMA training for mobile access towers
• PASMA towers on stairs courses

Proper training not only helps protect workers from injury. It also helps employers meet their legal duties, reduce downtime, and avoid enforcement action.

If you would like advice on working at height training or need to ensure your workforce is compliant, get in touch with our team here.