HSE Is Targeting Hearing Tests in UK Manufacturing. Here’s What It Means for Your Business.
- Mark Ashmore
- 1 day ago
- 10 min read
If you employ people in a noisy manufacturing environment and you are not running a proper hearing health surveillance programme, you need to read this.
Not because I am trying to sell you something, but because the Health and Safety Executive is actively inspecting businesses like yours right now, and the consequences of getting caught without the right records in place are brutal.
I have spent over 30 years in audiology. I sit on British Standards committees for hearing protection and acoustics. In all that time, I have never seen enforcement activity regarding workplace noise accelerate as it has over the last 18 months.
HSE’s Noise Inspection Campaign: What They Found
In spring 2024, HSE launched a multi-year inspection campaign targeting noise management across manufacturing, engineering, construction and food processing. Inspectors have engaged with more than 5,000 duty holders across these sectors so far, and the findings have been damning.
Around 40% of the manufacturing sites visited were running at noise levels above the upper exposure action value of 85 dB(A). At that threshold, hearing health surveillance and enforced hearing protection are not optional.
They are a legal requirement under the Control of Noise at Work Regulations 2005. Nearly half of all sites inspected received formal enforcement notices requiring immediate, documented action to reduce noise risk, representing a 300% increase in noise-related enforcement compared to the previous period.
The detail is worse than the headline.
75% of workers in noisy environments did not know how to store, maintain or check their hearing protection. 80% had never been shown how to wear or insert it correctly, and 63% did not realise they needed to wear it continuously while working in noisy areas.
The most dangerous finding was that 95% of employers had not checked whether their workers could still hear fire alarms, reversing vehicles or emergency warnings while wearing hearing protection.
HSE’s conclusion was that only about 60% of workers who are supposed to wear hearing protection are actually getting any real protection.
As HSE Principal Specialist Inspector Chris Steel put it, if your defence against workplace noise is to hand out ear defenders, you need to check that they actually work.
Not sure where your business stands? Our free Compliance Checker tells you in under 3 minutes whether you would pass an HSE inspection tomorrow.
It is confidential, and the results stay between you and your screen:
What the Law Actually Requires
The Control of Noise at Work Regulations 2005 set out clear obligations based on noise exposure levels.
At 80 dB(A), the lower action value: You must carry out a noise risk assessment, provide information and training to employees, and make hearing protection available to anyone who asks for it.
If any worker between 80 and 85 dB shows early signs of hearing damage or is particularly vulnerable, health surveillance is required for them too.
At 85 dB(A), the upper action value: You must enforce the use of hearing protection, mark out and sign hearing protection zones, and put every exposed worker into a formal health surveillance programme that includes regular audiometric testing.
No wiggle room on this one.
At 87 dB(A), the exposure limit: This is the legal ceiling. Taking into account any protective hearing equipment worn, the noise reaching a worker’s ear must not exceed 87 dB(A) under any circumstances.
What “adequate” hearing surveillance actually looks like
It is not a one-off hearing check when someone joins the company.
HSE expects a structured programme that runs continuously, and it has teeth.
• A baseline audiogram before or as soon as possible after an employee starts in a noise-exposed role
• Annual testing for the first two years, then at least every three years after that
• Classification against the HSE’s four-category system (Categories 1 to 4), with immediate referral and action for anyone hitting Category 3 or 4
• Documented records for every employee under surveillance, retained for up to 40 years
• Results must feed back into your noise controls and risk assessments, not just sit in a filing cabinet
If an HSE inspector asks for your audiometric records and you cannot produce them, you have got a serious problem on your hands. And the fine is only the start.
What Non-Compliance Actually Costs
Fee for Intervention: £183 per hour
When an HSE inspector finds a material breach during a visit, the Fee for Intervention kicks in. As of 2025, that is £183 per hour, and it is backdated to the moment the inspector walked through your door.
It covers their site time, their office work, their report writing, their follow-up visits, everything, until the breach is resolved.
In 2024/25, HSE recovered £4.5 million through FFI alone, charging over 5,000 businesses an average of £875 each.
Noise investigations tend to be more complex than average because they involve reviewing historical audiometric data, evaluating third-party noise surveys, and negotiating engineering controls, so the bill typically comes in higher than that.
Fines and prosecution
HSE completed 246 prosecutions in 2024/25 with a 96% conviction rate, resulting in over £33 million in total fines.
Roughly half of that was linked to health-related offences rather than traditional safety incidents. Fines for noise breaches run into tens of thousands of pounds, with improvement notices and prohibition notices stacking on top.
Barry v Ministry of Defence: the case that rewrote the numbers
In 2023, the High Court awarded a former Royal Marine £713,716 for noise-induced hearing loss in Barry v Ministry of Defence.
The MoD admitted breaching their duty but tried to argue contributory negligence because Barry had not always worn his hearing protection. The judge threw it out, ruling that if the employer had not properly enforced a hearing conservation programme, they could not turn around and blame the employee for imperfect compliance.
That ruling matters for every manufacturing employer in the country. If you cannot demonstrate a documented, enforced programme of hearing surveillance and PPE management, a contributory negligence defence is not going to hold up.
And then there is the bit that really catches people off guard. The court ruled that, when assessing whether someone with NIHL is legally disabled, the beneficial effects of hearing aids must be completely ignored.
The focus is entirely on what the person cannot do without assistance. In practice, that means almost any manufacturing worker with moderate occupational hearing loss will cross the legal threshold for disability, and once they do, the calculation of damages changes completely. We are talking six figures, not five.
Insurance
Employers’ liability insurers are watching all of this. Without baseline audiograms and an unbroken chain of annual test records, you cannot separate occupational hearing damage from natural age-related loss.
That makes claims almost impossible to defend, which means the insurer pays out and your premiums go up. Some manufacturers are finding it increasingly difficult to obtain coverage without evidence of a documented surveillance programme.
Want to know exactly where your legal obligations sit? Our free Compliance Checker takes less than 3 minutes and lays it out for you against the regulations:
Why the Mobile Van Model Is Falling Apart
For decades, the standard approach to hearing surveillance in manufacturing was to book a mobile audiometry van once a year. A technician turns up, parks in the car park, and you pull workers off the line one at a time.
It works, technically. But it is expensive, disruptive, and riddled with compliance gaps that most employers do not even realise they have.
Mobile van testing typically costs between £40 and £70 per employee, plus call-out and travel charges. Day rates often range from £1,000 to £1,500 for a single visit.
Each worker is off the production line for 30 to 45 minutes by the time they have walked to the van, waited their turn, done the test and walked back. For a factory with 100 workers, that is a serious chunk of lost output on top of the testing bill.
But the cost is not even the biggest problem. It is the timing.
Mobile vans run on pre-booked schedules, usually weeks in advance, usually weekday daytime hours. Night-shift workers get missed.
Workers who are off sick or on holiday that day get missed. And new starters who join between visits can go months without a baseline audiogram.
If someone starts in February and the van does not come until October, that worker has been exposed to noise for eight months with no documented hearing assessment when they walked through the door.
If they later claim NIHL, you have nothing to defend yourself with.
How We Built Something That Actually Works
At Hear 4 The Long Term, we designed a self-service model from the ground up to fix these problems.
We ship a pre-calibrated USB headset and testing kit directly to your workplace.
Your nominated person, whether that is an HR administrator, an H&S officer, or whoever makes sense for your operation, runs the test through a secure online link.
Each test takes about 15 to 20 minutes, and the results are documented instantly for your HSE records.
No van in the car park. No audiologist on site. No day rate. No minimum booking.
Every result is reviewed by a qualified audiologist and categorised against the HSE system. If someone hits Category 3 or 4, you'll know straight away and can take action before it becomes a legal problem. Because the kit stays on site, you can test around your production schedule.
Night shifts, weekends, and new starters during induction- it all gets covered. No gaps, no workers falling through the cracks.
HSE hearing surveillance from £10 per test. Earplug fit testing from £3 per test. Baseline hearing tests for new starters from £9 per test.
For an employer with 100 noise-exposed workers, that is the difference between spending £3,500 or more on a van service and a fraction of that with us.
Where Does Your Business Stand?
If your hearing surveillance programme is up to date, documented and defensible, you are ahead of most. HSE’s own data says 20% to 30% of employers in noise-exposed sectors do not have adequate hearing protection programmes in place. That is a lot of companies hoping they do not get a knock on the door.
If you are unsure or it has been a while since anyone properly reviewed your compliance, our Compliance Checker is free, confidential, and takes less than 3 minutes. No phone call. No video meeting. No follow-up unless you want one. The results are on screen the moment you finish.
If everything comes back clean, you have peace of mind and a record to show an inspector. If there are gaps, at least you will know what they are before someone else finds them for you.
Frequently Asked Questions (FAQ)
How often does my business need to do hearing tests for employees?
It depends on the noise levels. If your workers are exposed to 85 dB(A) or above, they need a baseline audiogram when they start, annual testing for the first two years, then at least every three years after that. If someone is between 80 and 85 dB(A) and already showing signs of hearing damage, they need to be in the programme too. The key point is that it has to be continuous and documented. A one-off test when someone joins the company does not meet the legal requirement.
What happens if the HSE inspects my workplace and I do not have audiometric records?
You are looking at a Fee for Intervention charge of £183 per hour, backdated to the moment the inspector arrived. On top of that, you could receive a formal enforcement notice requiring immediate action, and in serious cases, prosecution. HSE's conviction rate is 96%, and fines for health-related breaches regularly run into tens of thousands. The absence of records is treated as a material breach, not an administrative oversight.
What is the HSE Fee for Intervention, and how much does it cost?
The Fee for Intervention is a cost-recovery scheme. When an HSE inspector finds you are in material breach of health and safety law, they charge you for their time. The current rate is £183 per hour and covers everything from the site visit to report writing to any follow-up inspections. In 2024/25, HSE recovered £4.5 million through FFI, charging over 5,000 businesses. The average was £875 per business, but noise investigations tend to cost more because they involve reviewing historical data and evaluating engineering controls.
Can my employees do hearing tests on-site without a mobile audiometry van?
Yes. Self-service hearing surveillance kits, like the ones we provide at Hear 4 The Long Term, use pre-calibrated USB headsets that your own staff can administer on-site via a secure online link. Each test takes about 15 to 20 minutes, and every result is reviewed by a qualified audiologist afterwards. The advantage is that you can test around your production schedule, cover night shifts and weekends, and get new starters baselined during induction rather than waiting months for a van booking.
What noise level requires mandatory hearing health surveillance?
At 85 dB(A) daily or weekly average exposure, hearing health surveillance becomes a legal requirement under the Control of Noise at Work Regulations 2005. That means formal audiometric testing in a structured programme, not just handing out ear defenders. At 80 dB(A), you must carry out a noise risk assessment and make hearing protection available, and if anyone in that 80 to 85 range is showing early signs of damage, they need to go into surveillance as well.
How much can an employer be fined for noise at work non-compliance?
There is no fixed cap. HSE completed 246 prosecutions in 2024/25 with fines totalling over £33 million. Roughly half were linked to health-related offences. In addition to prosecution fines, you have the Fee for Intervention charges, the cost of complying with enforcement notices, and the risk of civil claims from employees. The Barry v Ministry of Defence case in 2023 resulted in a £713,716 award for a single claim of noise-induced hearing loss. That is the benchmark courts are now working from.
What is the difference between the lower and upper exposure action values for noise?
The lower exposure action value is 80 dB(A). At that level, you must assess the risk, inform and train your employees, and make hearing protection available on request. The upper exposure action value is 85 dB(A), and that is where it gets serious. You must enforce the use of hearing protection, designate and sign hearing protection zones, and place every exposed worker in a formal health surveillance programme with regular audiometric testing. There is also an absolute exposure limit of 87 dB(A) measured at the ear, taking into account any protective hearing equipment worn, which must never be exceeded.
Does my business need hearing surveillance if workers only sometimes work in noisy areas?
If their daily or weekly average noise exposure exceeds 80 dB(A), then yes, the regulations apply. It does not matter whether the exposure is continuous or intermittent. HSE expects you to assess the actual exposure pattern across a working day or a representative week. A worker who spends two hours near a machine running at 95 dB(A) and the rest of the day in an office can still exceed the action values when averaged over the day. The only way to know for certain is to measure it, which is exactly what a noise risk assessment is for.
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