Falls from height are the biggest single cause of death in UK construction. The Work at Height Regulations 2005 apply at any height where a person could be injured by a fall — there is no minimum height. Work must be properly planned, supervised and carried out by competent people, using suitable equipment that is inspected and maintained.
The regulations set a clear hierarchy of control that you must work through in order:
Collective measures protect everyone without action by the individual, so they always come before personal protection. Covers over openings must be secured and clearly marked.
Ladders and stepladders are for short-duration, light work only. Set a leaning ladder at the correct angle (roughly 75°, the 1-in-4 rule), on firm level ground, secured or footed, and extended above the landing point. Inspect before use and never use damaged or makeshift equipment.
Scaffolding may only be erected, altered or dismantled by trained, competent scaffolders. Check the scaff tag before use: a missing, red or incomplete tag means the scaffold is unsafe — do not use an incomplete scaffold. MEWPs and mobile towers need trained operators, level ground, and outriggers or stabilisers fitted; never move a tower with people or materials on it.
If a harness is used, it is fall restraint (stops you reaching the edge) or fall arrest (stops you hitting the ground). Clip to a suitable rated anchor point, and ensure rescue arrangements are in place.
Protect people below from falling objects: use toe boards, brick guards, debris netting, exclusion zones and signage. Fragile roofs and surfaces (such as old asbestos cement, rooflights and skylights) will not bear your weight — never walk on them; use crawling boards, staging and edge protection, and follow the warning signs.
1. Under the Work at Height Regulations 2005, what is the FIRST thing you should do about a task that involves working at height?
The hierarchy of control starts with avoiding work at height altogether where it is reasonably practicable, for example by doing the work from the ground. Source: Work at Height Regulations 2005
2. According to the Work at Height Regulations 2005, at what height does work at height become a risk that must be controlled?
There is no minimum height in the regulations; work at height is any place where a person could fall a distance liable to cause injury, even below ground level. Source: Work at Height Regulations 2005
3. Falls from height are best described as which of the following in UK construction?
Falls from height remain the largest single cause of fatal injury in the UK construction industry, which is why the regulations are so strict. Source: Work at Height Regulations 2005 / HSE guidance
4. In the work at height hierarchy, where it is not possible to avoid working at height, what should be done next?
After avoiding work at height, the next step is to prevent falls using collective measures such as guard rails, working platforms, towers or MEWPs before considering fall-arrest equipment. Source: Work at Height Regulations 2005
5. Which of these is a 'collective' fall-prevention measure rather than personal protection?
Collective measures such as guard rails protect everyone in the area without relying on each person, so they are preferred over personal protection like harnesses. Source: Work at Height Regulations 2005
6. Where a fall cannot be completely prevented, the Work at Height Regulations require you to use measures that do what?
When prevention is not fully possible, the final stage of the hierarchy is to minimise the distance and consequences of a fall using equipment such as nets, soft landing systems or fall-arrest gear. Source: Work at Height Regulations 2005
7. You have been asked to fit guttering to a single-storey building. Which approach best follows the work at height hierarchy?
A tower scaffold or MEWP provides a stable working platform with collective edge protection, which prevents falls far better than working off a ladder or the roof. Source: Work at Height Regulations 2005
8. A short task at height could be done either from the ground using an extension tool or by climbing a ladder. What should you do?
The first principle is to avoid working at height where reasonably practicable, so doing the job from the ground is the correct choice. Source: Work at Height Regulations 2005
9. Who must be involved in planning, supervising and carrying out work at height to ensure it is done safely?
The regulations require that work at height is planned, supervised and carried out by competent people who have the right training, knowledge and experience. Source: Work at Height Regulations 2005
10. Before any work at height is carried out, what must be done to manage the risks?
Work at height must be properly planned, which includes a suitable and sufficient risk assessment so the right control measures can be selected. Source: Work at Height Regulations 2005 / MHSWR 1999
11. A method statement specifies a MEWP for a task, but on the day only a ladder is available. What is the correct action?
You must not deviate from the agreed method statement; the work should stop until the specified equipment is available, as substituting a ladder reintroduces fall risk. Source: Work at Height Regulations 2005
12. Why does the work at height hierarchy place a personal fall-arrest harness near the BOTTOM of the list of controls?
A harness is personal protection that only works for the wearer and only after a fall has started, so collective measures that prevent falls are always preferred. Source: Work at Height Regulations 2005
13. Fragile surfaces such as roof lights and asbestos cement sheets should be treated in what way during work at height?
Falls through fragile surfaces are a major cause of death; they must be identified and protected by barriers, covers or working platforms so no one can fall through. Source: Work at Height Regulations 2005 / HSE guidance
14. While working at height you notice the weather has changed and strong winds have picked up. What should you do?
Work at height must take account of weather conditions; strong winds can make platforms and tasks dangerous, so work should stop and be reassessed. Source: Work at Height Regulations 2005
15. Under HASAWA 1974, what duty does an operative have when carrying out work at height?
Section 7 of HASAWA 1974 requires every employee to take reasonable care for the health and safety of themselves and others affected by their acts. Source: HASAWA 1974, s.7
16. What is the main purpose of a guard rail on a working platform?
Guard rails provide collective edge protection by stopping people from falling over the edge of a working platform. Source: Work at Height Regulations 2005
17. What is the main purpose of a toe board fitted at the edge of a working platform?
A toe board stops tools, materials and debris from being knocked off the platform and falling onto people below. Source: Work at Height Regulations 2005
18. You arrive at a working platform and find a section of guard rail has been removed and not replaced. What should you do?
A platform with missing edge protection is unsafe; you should not use it and must report it so the guard rail is properly reinstated before work continues. Source: Work at Height Regulations 2005
19. Edge protection on a working platform typically consists of which combination?
Proper edge protection is made up of a main guard rail, an intermediate (mid) rail to close the gap, and a toe board to stop materials falling. Source: Work at Height Regulations 2005
20. Why is an intermediate (mid) rail fitted between the top guard rail and the toe board?
The intermediate rail closes the gap between the top rail and toe board so a person cannot fall through the unprotected space. Source: Work at Height Regulations 2005
21. You find a hole in a floor slab covered by a loose, unmarked sheet of plywood. What is the safest action?
Covers over openings must be strong enough to carry expected loads, fixed so they cannot be dislodged, and clearly marked to warn of the hazard. Source: Work at Height Regulations 2005
22. A cover placed over a floor opening to prevent falls should always be which of the following?
An opening cover must be capable of supporting the loads placed on it, secured against accidental displacement, and marked so people know there is an opening beneath. Source: Work at Height Regulations 2005
23. You need to remove a guard rail temporarily to land a load of materials onto a platform. What should you do afterwards?
Edge protection removed for access must be replaced as soon as possible after the task, and the area kept safe while it is off. Source: Work at Height Regulations 2005
24. You see someone has stacked bricks right up against the toe board on a scaffold, above the height of the toe board. What is the risk?
A toe board only stops materials at its own height; stacking materials above it means they can topple over the edge, so materials must not be piled higher than the toe board. Source: Work at Height Regulations 2005
25. A leading-edge job means a guard rail cannot be fitted at the open edge for a short period. What is the correct way to manage the remaining fall risk?
Where collective edge protection cannot be provided, the hierarchy requires fall-minimisation measures such as nets or fall-arrest systems to control the residual risk. Source: Work at Height Regulations 2005
26. Why is edge protection (guard rails and toe boards) generally preferred over giving each worker a safety harness when working near an open edge?
Edge protection is a collective control that protects all workers automatically, whereas a harness only protects the wearer and depends on it being clipped on and used correctly. Source: Work at Height Regulations 2005
27. Walking across a floor, you notice a small uncovered opening with no barrier around it. What should you do first?
An unprotected opening is a fall hazard; it should be guarded or covered and reported so a proper, marked cover or barrier can be fitted. Source: Work at Height Regulations 2005
28. Who is responsible for making sure guard rails and edge protection are not removed or interfered with on site?
Under HASAWA 1974 s.8 no one may intentionally interfere with or misuse anything provided for health and safety, so all workers must leave edge protection in place. Source: HASAWA 1974, s.8 / Work at Height Regulations 2005
29. Under the Work at Height Regulations 2005, what is the FIRST thing you should consider before carrying out any task at height?
The hierarchy of control in the Work at Height Regulations 2005 starts with avoiding work at height wherever it is reasonably practicable to do so.
30. Falls from height are the single biggest cause of what in UK construction?
Falls from height remain the most common cause of fatal injury in construction, which is why the Work at Height Regulations place such emphasis on avoiding the risk. Source: HSE guidance / Work at Height Regulations 2005
31. You need to clean some high-level windows on a building. Which approach best follows the duty to avoid work at height where reasonably practicable?
Using an extending pole to work from the ground avoids work at height entirely, which is the top priority in the hierarchy of control. Source: Work at Height Regulations 2005
32. Is there a minimum height below which the Work at Height Regulations 2005 do NOT apply?
There is no minimum height; the regulations apply wherever a fall could cause personal injury, including at ground level into an excavation. Source: Work at Height Regulations 2005
33. A job at height could either be done by assembling part of a structure safely on the ground first, or by working entirely at height. What should you do?
Assembling at ground level reduces the amount of work that must be done at height, which supports the duty to avoid and minimise work at height. Source: Work at Height Regulations 2005
34. In the Work at Height Regulations hierarchy, after AVOIDING work at height, what is the next priority?
The hierarchy is avoid, then prevent falls (preferring collective protection such as guardrails or a MEWP), then minimise the distance and consequences of any fall. Source: Work at Height Regulations 2005
35. Which of these is an example of COLLECTIVE fall prevention rather than personal protection?
Guardrails protect everyone in the area without each person needing to take action, so they are collective protection and are preferred over personal measures. Source: Work at Height Regulations 2005