Construction compliance data
The most common construction site hazards
We looked at the hazards builders actually put in their risk assessments on The Site Book. The everyday ones win — and they are the ones worth getting right first.
TL;DR
The hazards that come up most often across the risk assessments generated on The Site Book are the everyday ones — manual handling, hand and power tools, scaffolding, and silica dust — not the exotic ones. Here is what the real data shows, and the controls that matter most for each.
In this guide
What the data shows
Most “top construction hazards” lists are written from memory. This one is not. We looked at which hazards builders actually selected across the Risk Assessments and site documents generated on The Site Book — an early sample of a few hundred real documents from the platform’s first months, not an industry-wide census.
The headline is boring, and that is the point: the hazards that come up most often are the ordinary, every-job ones. Manual handling leads by a wide margin, followed by hand tools, scaffolding, power tools, and silica dust. None of these are exotic. All of them are preventable. And all of them are exactly what an HSE inspector expects to see addressed in a credible RAMS.
A caveat worth stating plainly: this reflects the current mix of trades and jobs on the platform, so the ranking will shift as more contractors come on. Treat it as a useful signal about where the everyday risk sits — not a checklist every RAMS must contain.
The most common hazards
Here are the twelve hazards that appeared most often, ranked by how frequently builders kept them in their documents. The top five — manual handling, hand tools, scaffolding, power tools, and silica dust — account for a large share of every assessment, because they cut across almost every trade.
| Rank | Hazard | Category |
|---|---|---|
| 1 | Manual handling | Manual handling |
| 2 | Hand tools | Tools & equipment |
| 3 | Scaffolding | Work at height |
| 4 | Power tools | Tools & equipment |
| 5 | Silica dust | Hazardous substances |
| 6 | Waste materials | Environmental |
| 7 | Electrical equipment | Electrical |
| 8 | Materials at ground level | Slips, trips & falls |
| 9 | Moving vehicles / plant | Driving & transport |
| 10 | Stacked materials | General |
| 11 | Off-site delivery | Driving & transport |
| 12 | Adverse weather | General |
Why the everyday hazards dominate
Two things drive the ranking. First, ubiquity: almost no job avoids lifting, carrying, and hand or power tools, so those hazards appear on nearly every assessment regardless of trade. Manual handling tops the list precisely because unloading deliveries, moving materials, and clearing waste are unavoidable on site — and it is also the single biggest cause of lost-time injury in UK construction.
Second, the shape of the work. The busiest trades in the data — general site activities, plant and equipment use, joinery and carpentry, dry lining and plastering, and demolition and strip-out — are exactly the ones built around tools, handling, and dust. When those are the jobs being documented, the hazards that follow them naturally rise to the top.
“Musculoskeletal disorders are the most common occupational illness in Great Britain.”
Controlling the top five
1. Manual handling
Design the lift out before you train the lifter. Get deliveries dropped at the point of use, break loads down, use trolleys, sack trucks, and plasterboard lifters, and plan team lifts for anything heavy or awkward. Assess with TILE — Task, Individual, Load, Environment — and record the controls in your RAMS.
2. Hand tools
Most hand-tool injuries come from worn or wrong tools and poor technique. Inspect before use, replace mushroomed heads and split shafts, use the right tool for the task, and keep cutting edges sharp — a blunt blade needs more force and slips more often.
3. Scaffolding and work at height
Falls from height remain the leading cause of construction fatalities. Use a scaffold erected and inspected by a competent person, check the tag before you climb, keep platforms clear, and never remove ties, boards, or guard rails to get a job done faster.
4. Power tools
Guard, isolate, and extract. Keep guards in place, use RCD protection, inspect leads, and fit on-tool dust extraction — especially for cutting and grinding. Match PPE (eyes, hearing, RPE) to the tool and the material, not to habit.
5. Silica dust
The slow killer on the list. Cutting, grinding, and chasing masonry, concrete, and stone releases respirable crystalline silica. Control it at source with water suppression or on-tool extraction, fit the right RPE with a face-fit test, and never dry-sweep the debris.
The hazards builders miss
The everyday hazards are captured well. The gaps show up on the activity-specific ones — the hazards that only apply on certain jobs or certain days. Silica dust is the clearest example: because the harm is slow rather than immediate, it is consistently under-rated relative to how dangerous it is.
The same pattern applies to hidden live services when excavating, adverse weather on exposed work, and off-site delivery risks that only exist on the day materials arrive. These are precisely the hazards an inspector looks for, because a generic template almost never includes them. Matching the hazards to the actual work — and the specific site — is what turns a document from a box-tick into a genuine assessment.
Frequently asked questions
What are the most common hazards on a construction site?
Across the RAMS and site documents generated on The Site Book, the hazards that appear most often are manual handling, hand tools, scaffolding and working at height, power tools, and silica dust. These everyday hazards dominate because they are present on almost every job, whatever the trade. Site-specific and higher-consequence hazards — excavations, confined spaces, hot works — appear less often but carry a much higher severity when they do.
Why does manual handling top the list?
Manual handling appears on more risk assessments than any other hazard because almost no construction task avoids it — unloading deliveries, carrying materials, positioning components, and clearing waste all involve lifting. It is also the single biggest cause of lost-time injury in UK construction. The HSE treats musculoskeletal disorders as the most common occupational illness in Great Britain, which is why a credible RAMS almost always has to address it.
What hazards do small builders miss most often?
The pattern in the data is that the everyday hazards are captured well, but the ones tied to a specific activity are the ones that get overlooked — silica dust when cutting, hidden live services when excavating, and adverse-weather or delivery risks that only apply on certain days. These are exactly the hazards an HSE inspector looks for, because a generic template rarely includes them. Matching the hazards to the actual work is what separates a real assessment from a box-ticking one.
Do I need to assess every hazard on this list?
No. You assess the hazards that are actually present on your job. This list shows what comes up most often across many projects, not a checklist that every RAMS must contain. A domestic bathroom refit and a commercial demolition share some hazards (manual handling, dust) but differ on others. The legal test is that your assessment is suitable and sufficient for the specific work — which means covering the real risks of your task and site, and no more.
How does The Site Book decide which hazards to include?
When you describe the job, The Site Book identifies the work activities involved and suggests the hazards that typically apply to them, drawn from a construction hazard library. You review the suggestions, add anything site-specific, and remove anything that does not apply, so the finished RAMS reflects your actual work rather than a fixed template. The ranking in this guide comes from which of those suggested hazards builders most often keep in their documents.
Matching hazards to the job — data-led vs template
Pros
- The everyday hazards (manual handling, tools, dust) are predictable — you can plan controls for them up front.
- Ranking hazards by how often they really occur helps you prioritise the controls that prevent the most injuries.
- A RAMS built from the actual work activities catches the activity-specific hazards inspectors look for.
- Reusing a known hazard library speeds up the paperwork without dropping to a one-size-fits-all template.
Cons
- A frequency list is not a checklist — the rarer, high-severity hazards still need assessing when present.
- Generic templates over-include irrelevant hazards and under-include the site-specific ones that matter.
- Silica and other health hazards are easy to under-rate because the harm is slow, not immediate.
- Early-stage platform data reflects the current user base, so the mix will shift as more trades come on.
How The Site Book covers these
When you describe your job, The Site Book works out the activities involved and suggests the hazards that typically apply — the everyday ones from this list, plus the activity-specific ones builders tend to miss. You review the suggestions, add anything particular to your site, and remove anything that does not apply, so the finished RAMS reflects your real work rather than a fixed template.
Every hazard comes with real control measures and risk ratings, and the whole document is checked for vague wording before you download it. That is the difference this data points to: not more hazards, but the right ones, controlled properly, for the job in front of you.
Get the right hazards in your RAMS
Describe your job and The Site Book builds the Risk Assessments and Method Statements — with the hazards matched to your actual work, controls included.
See how it works →Related guides
Risk Assessment for Construction
The HSE 5-step process for a construction risk assessment.
Manual Handling on Construction Sites
The #1 hazard in the data — the law, TILE, and the controls that stick.
Silica Dust on Construction Sites
The slow killer on the list — how to control respirable silica.
How to Write a RAMS
Turn these hazards into a compliant, site-specific RAMS.
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Sources
- Construction statistics in Great Britain — Health and Safety Executive · Accessed 2 July 2026
- Managing health and safety in construction (CDM 2015) L153 — Health and Safety Executive · Accessed 2 July 2026
- Construction dust: silica — Health and Safety Executive · Accessed 2 July 2026
- Manual Handling Operations Regulations 1992 — legislation.gov.uk · Accessed 2 July 2026