What To Do If Exposed To Asbestos At Work: A Step-By-Step Guide
Asbestos disturbance is a health emergency — full stop. When asbestos-containing materials (ACMs) are disturbed, they release microscopic fibres into the air that can be inhaled by anyone nearby. Those fibres are capable of causing mesothelioma, asbestosis, and lung cancer, often decades after the original exposure.
The UK banned asbestos in 2000, but any building constructed before that date may still contain it. That means millions of commercial properties, schools, hospitals, and industrial sites carry some level of risk every single day.
If you are an employer, facilities manager, or anyone responsible for a workplace, knowing exactly what to do if exposed to asbestos at work — and what not to do — could genuinely protect lives. Here is a clear, practical breakdown of every step you need to take.
1. Stop All Work Immediately
The moment you suspect asbestos has been disturbed, stop work. Do not wait for confirmation. Do not carry on while someone investigates. Stop everything.
This applies even if you are not certain the material contains asbestos. The risk of being wrong is simply too high to justify continuing.
Under the Control of Asbestos Regulations, employers have a legal duty to manage asbestos risk — and that starts with not allowing workers to remain in a potentially contaminated environment.
- Cease all activity in the affected area immediately
- Instruct all workers to stop and move away from the location
- Prevent anyone else from entering the space
- Do not attempt to clean up the disturbance yourself
Speed matters here. The longer people remain in a contaminated area, the greater their potential fibre exposure. Every minute of continued exposure increases the risk.
2. Evacuate — But Do It Carefully
Evacuate the affected area as calmly and quickly as possible. Rushing around stirs up fibres that may have already settled, putting everyone at greater risk.
There are situations where immediate evacuation is not straightforward. If workers have visible dust or debris on their clothing, moving quickly through the building could spread contaminated particles to other areas. In those cases, keep people in place and get a licensed asbestos specialist on the phone immediately.
Anyone who must remain near the affected area while waiting for assistance should be issued appropriate respiratory protective equipment (RPE). Standard dust masks are not adequate. Only FFP3-rated respirators or half-face masks with P3 filters provide sufficient protection against asbestos fibres.
This is not an area where improvisation is acceptable.
3. Minimise the Spread of Contamination
Asbestos fibres cling to clothing, hair, and skin. The instinct to brush off visible dust is exactly the wrong response — dry brushing sends fibres straight back into the air where they can be inhaled again.
If there is visible contamination on clothing or skin, use a damp cloth to carefully wipe it down. This captures fibres rather than dispersing them.
Once out of the building safely:
- Dispose of contaminated clothing as asbestos waste — do not take it home to wash
- If clothing cannot be disposed of immediately, bag it securely in a sealed plastic bag
- Shower thoroughly, washing hair and body to remove any remaining fibres
- Anyone who has handled contaminated clothing should wash their hands thoroughly before touching their face
Taking contaminated clothing home is one of the most common — and most preventable — ways asbestos exposure spreads beyond the workplace. It has historically caused secondary exposure in family members, including children.
4. Secure and Restrict Access to the Area
Once the area has been evacuated, it must be secured. Asbestos fibres can remain suspended in the air for hours and may settle on surfaces — floors, furniture, equipment — where they can be disturbed again by foot traffic or air movement.
No one should re-enter the area until it has been professionally assessed and, where necessary, decontaminated.
Practical steps to take immediately:
- Seal off the area with barriers or locked doors
- Display clear warning signs indicating a potential asbestos hazard
- Switch off air conditioning or ventilation systems that could spread fibres to other parts of the building
- Notify building management and any other tenants or occupants who may be affected
Do not assume the area is safe once the visible dust has settled. Surface contamination can be just as dangerous when subsequently disturbed by cleaning, maintenance, or normal foot traffic.
5. Call a Licensed Asbestos Specialist
This is not a job for your regular cleaning contractor or maintenance team. Asbestos remediation after a disturbance must be carried out by a licensed professional with the right equipment, training, and legal authority to work with asbestos materials.
A specialist will attend site and assess the full extent of the disturbance. They will take air and surface samples to determine fibre concentration levels, identify the type of asbestos involved, and carry out a professional decontamination of the affected area.
They will also advise on whether the ACM needs to be labelled, encapsulated, or fully removed — and provide a clearance certificate confirming the area is safe to re-enter.
If asbestos removal is recommended, it will be carried out under controlled conditions in line with the Control of Asbestos Regulations. Licensed contractors are legally required for work involving notifiable asbestos types, including most forms of sprayed coatings, lagging, and asbestos insulating board.
Attempting to remove asbestos yourself is not only dangerous — it is illegal without the appropriate licence and notifications in place.
6. Report the Incident and Support Affected Employees
An asbestos disturbance is a reportable incident, and your legal obligations as an employer do not end once the area is cleared.
Reporting Obligations
Depending on the nature and severity of the exposure, the incident may need to be reported under RIDDOR (Reporting of Injuries, Diseases and Dangerous Occurrences Regulations). Significant asbestos exposure at work falls within the categories of reportable workplace health incidents.
If you are unsure whether your incident meets the threshold, contact the Health and Safety Executive (HSE) directly or seek legal advice. Do not assume it does not apply to you.
Employee Health Records
Employers have a duty under the Control of Asbestos Regulations to maintain health records for any employee who has been exposed to asbestos. These records must:
- Document the full details of the exposure incident
- Be kept for a minimum of 40 years
- Be made available to the employee on request
This requirement exists because asbestos-related diseases have an exceptionally long latency period. Mesothelioma, for example, can take between 20 and 60 years to develop after initial exposure. The record you create today could be medically significant decades from now.
What Employees Should Do After Potential Exposure
Any employee who was present during an asbestos disturbance should visit their GP as soon as possible. The key actions are:
- Inform the GP of the date, location, and nature of the exposure
- Provide any available information about the fibre type and estimated exposure level — your asbestos specialist should be able to supply this
- Ask for the incident to be formally recorded in their medical notes
- Discuss whether ongoing monitoring, such as periodic chest X-rays, is appropriate
There is currently no definitive test that can predict the extent of damage caused by a specific asbestos exposure. However, early monitoring gives the best chance of detecting any changes promptly, which can make a meaningful difference to long-term outcomes.
How To Prevent Accidental Asbestos Exposure at Work
Managing an asbestos disturbance effectively is important — but preventing one in the first place is always the better outcome. If you are responsible for a building constructed before 2000, you have a legal duty to manage any asbestos present. That starts with knowing where it is.
Commission an Asbestos Management Survey
An asbestos management survey identifies the location, type, and condition of any ACMs in your building. It forms the foundation of your asbestos management plan — a legal requirement for non-domestic premises under the Control of Asbestos Regulations.
Without one, you are managing blind. A management survey is the starting point for any responsible duty holder, giving you the information you need to make informed decisions about how to manage risk safely.
Carry Out Regular Re-Inspections
Asbestos in good condition and left undisturbed can often be managed in place — but its condition must be monitored over time. A re-inspection survey should be carried out periodically to confirm that ACMs remain stable and have not deteriorated.
Deteriorating asbestos becomes increasingly likely to release fibres, so catching changes early is essential. Do not leave re-inspections until something goes wrong.
Commission a Demolition Survey Before Any Building Work
One of the most common causes of accidental asbestos disturbance is renovation or maintenance work carried out without a prior survey. Before any intrusive work begins — fit-outs, refurbishments, structural alterations — a demolition survey must be completed.
This goes further than a management survey, physically investigating areas that will be affected by the works to ensure tradespeople are not unknowingly cutting into ACMs. It is a legal requirement before demolition or major refurbishment, not an optional extra.
Test Materials You Are Unsure About
If you have come across a material and are not certain whether it contains asbestos, do not guess. Supernova offers an asbestos testing kit that allows you to safely collect a sample and have it analysed by an accredited laboratory. It is a quick, low-cost way to get a definitive answer before proceeding with any work.
Alternatively, if you need professional asbestos testing carried out on site, our team can attend and take samples under controlled conditions. You can also send samples directly for sample analysis at our accredited laboratory.
For a broader overview of your options, our asbestos testing service page explains the different approaches available and helps you choose the right one for your situation.
Understanding Your Legal Duties Around Asbestos Exposure
The Control of Asbestos Regulations places clear legal duties on employers and duty holders. These are not guidelines — they are enforceable obligations. Failure to comply can result in prosecution, unlimited fines, and in serious cases, custodial sentences.
The key duties relevant to workplace asbestos exposure include:
- Duty to manage: Non-domestic premises built before 2000 must have an asbestos management plan based on a survey
- Duty to inform: Anyone liable to disturb ACMs must be informed of their location and condition before work begins
- Duty to train: Workers who may encounter asbestos must receive appropriate information, instruction, and training
- Duty to record: Exposure incidents must be documented and health records maintained for a minimum of 40 years
- Duty to report: Significant exposure incidents must be reported under RIDDOR
HSE guidance, including HSG264, provides detailed practical advice on how these duties should be fulfilled. If you are unsure about your obligations, professional advice from a qualified asbestos surveyor is always the safest route.
Why Every Exposure Matters — Even a Minor One
It can be tempting, particularly after a minor-seeming incident, to assume the risk was low and move on. That is a dangerous assumption to make with asbestos.
There is no known safe level of asbestos exposure. Even brief, low-level exposure carries some degree of risk, and the cumulative effect of multiple exposures over a working lifetime significantly increases that risk.
This is precisely why the legal framework around asbestos is so stringent, and why every incident — however small it appears — must be treated seriously, documented thoroughly, and reported where required.
The steps outlined in this post are not bureaucratic box-ticking. They exist because asbestos-related diseases are devastating, largely preventable, and still claim thousands of lives in the UK every year. Taking the right action immediately after an exposure incident is one of the most important things any employer or duty holder can do.
Frequently Asked Questions
What should I do immediately if I think I have been exposed to asbestos at work?
Stop work immediately, evacuate the area calmly, and prevent anyone else from entering. Do not brush dust off clothing — use a damp cloth instead. Secure the area, switch off ventilation systems, and call a licensed asbestos specialist. Visit your GP as soon as possible and ask for the incident to be recorded in your medical notes.
Do I have to report asbestos exposure at work to the HSE?
Depending on the nature and severity of the incident, it may need to be reported under RIDDOR. Significant asbestos exposure falls within the categories of reportable workplace health incidents. If you are unsure whether your incident meets the threshold, contact the HSE directly or seek legal advice rather than assuming it does not apply.
How long do employers need to keep health records after an asbestos exposure incident?
Under the Control of Asbestos Regulations, employers must keep health records relating to asbestos exposure for a minimum of 40 years. This is because asbestos-related diseases such as mesothelioma can take between 20 and 60 years to develop after the original exposure. These records must be made available to the employee on request.
Can I clean up asbestos myself after a disturbance at work?
No. You must not attempt to clean up asbestos disturbance yourself. Remediation after an asbestos incident must be carried out by a licensed professional. For notifiable asbestos types — including most sprayed coatings, lagging, and asbestos insulating board — only licensed contractors are legally permitted to carry out the work. Attempting removal without the appropriate licence is illegal.
How can I find out if my workplace contains asbestos before work begins?
If your building was constructed before 2000, you should commission an asbestos management survey to identify the location, type, and condition of any asbestos-containing materials. Before any refurbishment or demolition work, a demolition survey is legally required. If you are uncertain about a specific material, an asbestos testing kit or professional on-site sampling can provide a definitive answer quickly and cost-effectively.
Get Expert Help From Supernova Asbestos Surveys
Supernova Asbestos Surveys has completed over 50,000 surveys across the UK. Whether you need an urgent assessment following a disturbance, a management survey to fulfil your legal duty, or professional asbestos testing, our qualified surveyors are ready to help.
Do not wait until something goes wrong. Call us today on 020 4586 0680 or visit asbestos-surveys.org.uk to find out how we can help you manage asbestos risk safely and in full compliance with the law.
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