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Construction compliance guide

Incident Reporting and RIDDOR: What to Report and When

A plain-English guide to RIDDOR 2013 for builders. What counts as a reportable incident, who has to report it, how quickly you need to act, and what happens if you get it wrong.

What is RIDDOR?

RIDDOR stands for the Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 2013. It is the law that requires employers, self-employed people, and anyone in control of work premises to report certain workplace accidents, occupational diseases, and dangerous occurrences to the Health and Safety Executive (HSE).

The purpose is straightforward: the HSE needs to know about serious incidents so it can investigate where necessary, identify trends, and target its resources at the industries and activities causing the most harm. Construction is consistently one of the highest-risk sectors in the UK, which means RIDDOR reporting is something every builder needs to understand.

RIDDOR applies to all work activities, but it is particularly relevant on construction sites where the risk of serious injury is higher. If you are running a site — whether you are the principal contractor, a subcontractor, or a sole trader — you need to know what triggers a RIDDOR report and how to make one.

Who has to report?

The duty to report falls on the “responsible person.” In practice, this means:

  • Employers. If one of your employees is injured or falls ill because of work, you must report it. This applies whether the incident happens on your own site or on someone else's.
  • Self-employed workers. If you are self-employed and you suffer a reportable injury or dangerous occurrence arising out of your work, you must report it yourself.
  • The person in control of the premises. If a non-worker — a member of the public, a visiting client, a delivery driver — is injured on premises you control, you must report it. On construction sites, this is typically the principal contractor.

If you are unsure whether the duty falls on you, the general rule is: whoever is responsible for the health and safety of the person involved is the one who must report. On a multi-contractor site, this can mean different people report different incidents depending on whose worker was affected.

What must be reported under RIDDOR?

Not every accident is reportable. RIDDOR only covers specific categories of incident. Here is what you need to report:

Deaths

Any death of a worker arising out of or in connection with work. Any death of a non-worker resulting from a work-related accident.

Specified injuries to workers

Fractures (other than to fingers, thumbs and toes), amputations, crush injuries leading to internal organ damage, serious burns covering more than 10% of the body, scalping requiring hospital treatment, loss of consciousness caused by head injury or asphyxia, and any injury requiring admission to hospital for more than 24 hours.

Over-7-day incapacitation

Where a worker is unable to carry out their normal work duties for more than seven consecutive days (not counting the day of the accident). This does not need to be seven days off work — it means seven days unable to do their full range of normal duties.

Non-fatal injuries to non-workers

If a member of the public, a visiting client, or any other non-worker is injured on your site and taken directly to hospital for treatment, that must be reported.

Occupational diseases

Certain work-related diseases must be reported when a doctor confirms the diagnosis and the worker's job involves a specific activity. In construction, relevant diseases include carpal tunnel syndrome, hand-arm vibration syndrome, occupational dermatitis, occupational asthma, and tendonitis.

Dangerous occurrences

Specific near-miss events that had the potential to cause serious harm — the collapse of scaffolding, failure of a crane or hoist, accidental release of a harmful substance, or the partial collapse of a structure under construction.

Reporting deadlines: how quickly must you act?

The deadline depends on the severity of the incident. Getting this wrong is one of the most common RIDDOR mistakes, so pay attention to the distinction:

  • Deaths and specified injuries. Report without delay. Notify the HSE by the quickest practicable means — phone for fatalities and very serious incidents, or online. Follow up with a written report within 10 days.
  • Over-7-day incapacitation injuries. You have 15 days from the date of the accident to submit the report. The seven days of incapacitation do not need to have passed before you report — if you know by day three that the worker will be off for more than seven days, report it then.
  • Dangerous occurrences. Report without delay, the same as deaths and specified injuries. These are serious events even though no one was hurt.
  • Occupational diseases. Report as soon as a doctor notifies you or you receive a written diagnosis linking the disease to the worker's job.

How to report a RIDDOR incident

The HSE has made reporting straightforward. There are two main methods:

Online. The preferred method for most incidents. Go to the HSE’s RIDDOR reporting page and complete the appropriate form. There are separate forms for injuries, dangerous occurrences, occupational diseases, and flammable gas incidents. The online system is available 24 hours a day, seven days a week.

By telephone. Call the HSE Incident Contact Centre on 0345 300 9923. This is only for reporting fatalities and incidents where the injured person has been taken to hospital with specified injuries. The line is open Monday to Friday, 8:30am to 5pm. Out-of-hours reporting for fatalities and major incidents is available through the duty officer.

Once you have submitted a report, the HSE will send you a copy for your records. Keep this safe — you are legally required to keep records of all RIDDOR reports for at least three years from the date of the incident. This includes a record of the date and method of reporting, the date, time and place of the event, and personal details of those involved.

What is NOT reportable under RIDDOR?

Knowing what falls outside RIDDOR is just as important as knowing what falls inside it. The following are not reportable:

  • Minor injuries. Cuts, bruises, and sprains that do not result in over-7-day incapacitation or a specified injury are not reportable. You should still record them in your accident book, but there is no duty to notify the HSE.
  • Road traffic accidents on public roads. If one of your workers is injured in a road traffic accident on a public road — even while driving for work — this is reported to the police, not the HSE. Accidents in site car parks or on private roads may still be reportable.
  • Members of the armed forces. Injuries to members of the armed forces are dealt with under separate legislation and are not covered by RIDDOR.
  • Injuries from medical treatment. Injuries arising from medical or dental treatment are not reportable under RIDDOR.

Even when an incident is not reportable under RIDDOR, you should still record it internally. Good record-keeping helps you spot patterns, improve safety, and demonstrate due diligence if questions are asked later.

Consequences of not reporting

Failing to report a RIDDOR incident is a criminal offence. You can be prosecuted under the Health and Safety at Work etc. Act 1974, with penalties of up to an unlimited fine in the Crown Court or up to £20,000 in the Magistrates’ Court. In the most serious cases, individuals can face imprisonment.

Beyond the legal penalties, unreported incidents undermine your credibility with the HSE. If an inspector discovers you have failed to report, it signals poor management and makes further enforcement action more likely. It can also damage your reputation with clients and principal contractors who take compliance seriously.

Near-miss reporting: not RIDDOR, but best practice

Not every near miss is a dangerous occurrence under RIDDOR. But that does not mean you should ignore them. Near-miss reporting is one of the most effective ways to prevent serious incidents before they happen. If something nearly went wrong — a load nearly fell, a scaffold nearly collapsed, someone nearly fell from height — recording and investigating it can help you fix the underlying problem.

Many principal contractors and larger clients now expect subcontractors to have a near-miss reporting system. Even if you are a sole trader, keeping a simple log of near misses shows professionalism and a genuine commitment to safety. The Site Book lets you log near misses and incidents alongside your other project documentation, keeping everything in one place.

How The Site Book helps with incident tracking

The Site Book lets you record incidents and near misses directly against your project. When something happens on site, you can log it immediately — what happened, who was involved, what action was taken — while the details are still fresh. No more scribbling on the back of a delivery note and losing it.

Your incident records sit alongside your Construction Phase Plan, RAMS, site inductions, and other project documentation. If the HSE asks about your incident history, you can pull it up in seconds. That level of organisation makes a strong impression during inspections and demonstrates that you are managing health and safety properly — not just reacting to problems after the fact.

Frequently asked questions

Common questions builders ask about RIDDOR and incident reporting.

What injuries must be reported under RIDDOR?

Under RIDDOR 2013, the following injuries to workers must be reported: deaths, specified injuries (which include fractures other than to fingers, thumbs and toes, amputations, crush injuries leading to internal organ damage, serious burns covering more than 10% of the body or causing significant damage to eyes, respiratory system or other vital organs, scalping requiring hospital treatment, loss of consciousness caused by head injury or asphyxia, and any injury requiring admission to hospital for more than 24 hours), and injuries that result in incapacitation for more than seven consecutive days (not counting the day of the accident). Injuries to non-workers — members of the public, visitors, clients — must be reported if the person is taken directly to hospital for treatment. The key distinction is between workers and non-workers: for workers, you report specified injuries and over-7-day incapacitation; for non-workers, you report injuries that result in them being taken to hospital.

How quickly do I need to report a RIDDOR incident?

The reporting deadline depends on the type of incident. Deaths and specified injuries must be reported without delay — you should notify the HSE immediately by the quickest practicable means. In practice, this means calling the HSE Incident Contact Centre on 0345 300 9923 for fatalities and very serious incidents, or reporting online at the HSE website as soon as possible. You must then follow up with a written report within 10 days. For over-7-day incapacitation injuries — where a worker is unable to carry out their normal duties for more than seven consecutive days — you have 15 days from the date of the accident to submit the report. Dangerous occurrences must be reported without delay, similar to deaths and specified injuries. Occupational diseases must be reported as soon as a doctor notifies you or you receive a diagnosis. Missing these deadlines is a criminal offence, so it is important to understand which category your incident falls into and act accordingly.

Do I need to report a broken bone under RIDDOR?

It depends on which bone is broken and who was injured. For workers, fractures are classified as specified injuries under RIDDOR — but only fractures other than to fingers, thumbs and toes. So if a worker breaks an arm, a leg, a rib, a collarbone, a wrist, or an ankle on your site, that is a specified injury and must be reported without delay. A broken finger or toe does not need to be reported as a specified injury, though it may still be reportable as an over-7-day incapacitation injury if the worker is unable to carry out their normal duties for more than seven consecutive days as a result. For non-workers — such as members of the public or visiting clients — a broken bone must be reported if the person is taken directly to hospital for treatment. In practice, most broken bones on construction sites will be reportable one way or another. When in doubt, report it — the HSE would rather receive a report that turns out to be unnecessary than miss one that should have been made.

What is a dangerous occurrence under RIDDOR?

A dangerous occurrence is a specific type of incident listed in Schedule 2 of RIDDOR 2013 that did not result in a reportable injury but had the potential to cause serious harm. In construction, the most relevant dangerous occurrences include: the collapse, overturning or failure of load-bearing parts of lifts, hoists, cranes, or scaffolding; the accidental release of any substance that could cause injury to any person; an electrical short circuit or overload attended by fire or explosion that results in the stoppage of the plant for more than 24 hours; the collapse or partial collapse of any building or structure under construction; and the unintentional collapse or partial collapse of any scaffold over five metres high. These are sometimes called near misses, but they are more than that — they are legally defined events that must be reported to the HSE without delay. The full list is in Schedule 2 of the Regulations and it is worth reading through it so you know what applies to your type of work.

What happens if I fail to report a RIDDOR incident?

Failing to report a RIDDOR incident is a criminal offence under the Health and Safety at Work etc. Act 1974. If the HSE discovers that a reportable incident occurred and was not reported, you can be prosecuted. The penalties are significant — an unlimited fine in the Crown Court or a fine of up to £20,000 in the Magistrates' Court. In serious cases, individuals can face imprisonment. Beyond the legal penalties, failing to report damages your credibility with the HSE. If an inspector discovers unreported incidents during a site visit or investigation, it suggests that your health and safety management is poor and that you are not taking your legal duties seriously. This makes enforcement action — improvement notices, prohibition notices, or prosecution — far more likely. It can also affect your ability to win future work, since many clients and principal contractors now ask about your incident reporting record. The message is simple: if in doubt, report it. The process takes a few minutes online and protects you legally.

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