Needing a special safety sign? Why not create your own?
If you manage a workplace where noise levels regularly exceed safe limits, you have probably wondered whether noise hazard signs are actually required by law, or just good practice. The short answer is that while the Control of Noise at Work Regulations 2005 does not explicitly mandate signs, they become a legal necessity when your risk assessment identifies significant noise exposure. Let me explain when, where and why noise hazard signs are required, and how to get this right without unnecessary complexity.
The Control of Noise at Work Regulations 2005 places clear duties on employers to assess and control workplace noise, but it does not directly state “you must install noise hazard signs.” Instead, the regulations require you to inform employees about noise risks and the steps being taken to manage them. This is where signage becomes essential.
Under Regulation 10, employers must provide information, instruction and training to employees who are exposed to noise at or above the lower exposure action values. HSE guidance makes it clear that effective communication includes visual warnings, especially in areas where hearing protection is mandatory or where noise levels reach the upper exposure action values.
In practical terms, if your risk assessment shows daily noise exposure at or above 85 dB(A), or peak sound pressure at or above 137 dB(C), you are legally obliged to designate hearing protection zones and inform workers accordingly. Noise hazard signs are the most effective and universally understood method of doing this, which is why HSE inspectors will expect to see them in place during site visits.
Noise hazard signs are required when your workplace noise assessment identifies exposure at specific thresholds set out in the regulations. Understanding these action values helps you decide where signage is necessary:
At this level, you must inform workers about the risks and provide hearing protection on request. While signage is not strictly mandatory here, it is good practice to mark noisy areas so employees can make informed decisions about protection.
This is the critical threshold. When noise reaches these levels, hearing protection becomes mandatory, and you must designate and clearly mark hearing protection zones. Noise hazard signs are the recognised way to meet this requirement. The HSE expects clear, visible warning signs at the entrance to these zones, and enforcement action can follow if signage is missing or inadequate.
These are absolute legal limits that must not be exceeded, even with hearing protection. If your assessment shows noise approaching these levels, immediate engineering controls are required alongside prominent signage warning of extreme noise hazards.
Effective noise hazard signs follow recognised standards to ensure they are understood instantly, even in high-pressure or multilingual workplaces. The key standards to follow are:
ISO 7010 and BS EN ISO 7010
These international and British standards define the design, colour and symbols used for safety signage. For noise hazards, the standard symbol shows a stylised ear with sound waves, presented on a blue mandatory action background for hearing protection zones, or a yellow warning triangle for general noise hazard alerts.
Typical wording includes:
Signs should be placed at every entrance to designated zones, positioned at eye level, and maintained so they remain clean and legible. In environments with poor visibility, dust or weather exposure, choose durable materials such as rigid plastic or aluminium composite that can withstand the conditions. For more guidance on material selection, see our signs.
Getting noise hazard signage right is straightforward when you follow a structured approach. Here is a practical checklist based on decades of working with businesses across construction, manufacturing and events:
For specific guidance on signage for construction environments, visit our construction site signs page.
Noise hazards are not limited to heavy industry. Here are some real-world examples where signage becomes a legal and practical necessity:
Do I need signs if workers wear hearing protection anyway?
Yes. Even if everyone on site uses ear defenders, the law requires you to inform workers where and why protection is mandatory. Signage provides that clear, unambiguous instruction.
Can I make my own noise hazard signs?
Technically, yes, but homemade signs often fail to meet ISO 7010 standards and may not be recognised by inspectors or workers. Using professionally manufactured, compliant signage avoids confusion and demonstrates due diligence.
What happens if I do not use noise hazard signs?
Failure to adequately inform workers about noise risks can result in enforcement notices, fines and, in cases of hearing damage, civil claims. HSE inspectors will assess whether signage is appropriate and sufficient during site visits.
How long do noise hazard signs last?
Lifespan depends on material and environment. Internal signs on rigid plastic can last 10+ years. Outdoor signs in harsh conditions may need replacing every 3–5 years. Regular inspections ensure signs remain effective.
Cheap or poorly designed signs can fade, crack or become illegible within months, creating a false sense of compliance. We have seen businesses caught out during inspections because their signage was present but unreadable.
When you invest in durable, professionally manufactured signs, you are not just ticking a box; you are ensuring workers can rely on clear, consistent warnings regardless of weather, lighting or wear. Materials matter, placement matters, and long-term performance matters. That is why we manufacture all our safety signage in-house to exacting standards, with same-day dispatch available on stock items. Learn more about us and our commitment to quality.
If you are still uncertain whether your workplace needs noise hazard signs, or you are unsure which type to use, start with a thorough noise risk assessment. The HSE website offers practical guidance, measurement tools and case studies to help you evaluate exposure levels.
Once you know where signage is required, choose signs that meet ISO 7010 standards, suit your environment, and will last. If you need bespoke wording, specific sizes or custom materials, we can help. Our team has over two decades of experience manufacturing safety signage for businesses across the UK, and we are always happy to talk through your requirements without obligation.
For fast, reliable compliance signage, explore our full range of noise hazard signs, or contact us to discuss your specific needs. We also offer a straightforward returns policy should you need any adjustments.
Protecting hearing is not complicated when you work with the right people. Get the signage right, train your team properly, and you will have taken a crucial step towards a safer, legally compliant workplace.
