Hand-Arm Vibration (HAVS) for UK Trades — The Law, Exposure Limits and Protecting Your Hands (2026)

What HAVS Actually Is

HAVS is damage to the blood vessels, nerves and joints in the hands and arms, caused by transmitting vibration from a tool into the hand over months and years. It builds up gradually, often without the worker noticing until the damage is done. The symptoms fall into a few recognisable patterns:

• Tingling and numbness in the fingers and hands, often worse at night or after using tools.
• Vibration white finger: the fingertips go white and bloodless (blanching), especially in cold or wet conditions, before flushing red and throbbing as circulation returns. This is the classic, visible sign.
• Loss of grip strength and dexterity: dropping tools, struggling to pick up small objects like screws, buttons or coins.
• Pain and reduced feeling that make fine work and even everyday tasks difficult.

The critical point is this: once HAVS is established, it does not go away. There is no cure. The fingers do not recover their circulation and the nerves do not regrow. Early action — catching the first tingling or blanching and reducing exposure before it progresses — is everything. A worker who reports symptoms early and is moved to lower-vibration work can stop the damage advancing. A worker who pushes through ends up disabled.

The Law: Control of Vibration at Work Regulations 2005

HAVS is governed by the Control of Vibration at Work Regulations 2005, enforced by the HSE. The regulations place a clear duty on employers — and on the self-employed in respect of their own health — to assess and control the risk from vibration. You cannot simply hand out tools and hope for the best.

The core duty is to eliminate vibration exposure at source where you can, and where you cannot, to reduce it to as low as is reasonably practicable. That means assessing how much vibration your people are exposed to, putting controls in place, providing information and training, and — above a certain level of exposure — providing health surveillance to catch problems early. The regulations apply to sole traders too: if you regularly use vibrating tools yourself, you have a duty to manage your own exposure.

The Exposure Values You Need to Know

Vibration exposure is measured as A(8) — the vibration magnitude averaged over an eight-hour working day, expressed in metres per second squared (m/s²). It combines how powerful the tool is with how long you actually use it (the trigger time). Two figures sit at the heart of the regulations:

• Exposure Action Value (EAV) — 2.5 m/s² A(8): above this daily exposure you must take action to reduce exposure and provide health surveillance for the workers affected.
• Exposure Limit Value (ELV) — 5 m/s² A(8): this must not be exceeded. It represents a high daily dose that powerful tools reach quickly.

What surprises a lot of trades is how little tool time it takes to hit these figures. A powerful angle grinder, breaker or needle gun can take you to the EAV (2.5 m/s²) in well under an hour, and to the ELV (5 m/s²) in a couple of hours of actual trigger time. Trigger time — the time the tool is genuinely cutting, breaking or running — is what counts, not the length of the shift. This is why managing how long each tool is used matters so much more than people expect.

The HSE Points System

Working in raw m/s² figures is awkward on site, so the HSE provides a simpler points system to manage daily exposure. It expresses the two values as round numbers:

• The Exposure Action Value equals 100 points in a day.
• The Exposure Limit Value equals 400 points in a day.

Each tool has a points-per-hour rate worked out from its vibration magnitude. The more powerful the tool, the more points it racks up per hour of trigger time. Because points simply add up, you can total the points from every tool and task a worker uses across the day and keep the running total under 100 (the action value) or, at worst, under 400 (the limit value). It turns an abstract calculation into something you can plan a job around.

You work out the points from manufacturers' declared vibration data — but treat that data with caution. Declared figures are measured under controlled lab conditions and real-world vibration on site is often significantly higher, especially with worn tools, blunt blades or hard materials. The HSE's free online hand-arm vibration exposure calculator and ready-reckoner let you enter tools and trigger times to get the daily total. When in doubt, assume the on-site figure is worse than the spec sheet and build in a margin.

Controlling Exposure: The Practical Heart of It

Controlling HAVS comes down to eliminating vibration where you can and reducing it everywhere else. These are the measures that actually work on site:

• Use the right tool for the job. The wrong tool — too small, too big, or the wrong type — means more vibration and longer trigger time. A heavier breaker that does the job in half the time can mean less total exposure than struggling with an underpowered one.
• Choose low-vibration tools. Modern anti-vibration designs genuinely cut exposure. When you replace kit, compare declared vibration figures and buy down the points-per-hour rate.
• Keep tools maintained, and blades and bits sharp. A blunt blade or worn disc dramatically increases vibration and makes the job take longer — a double hit on exposure. Sharp, well-maintained tools are a frontline HAVS control, not just good housekeeping.
• Rotate jobs and limit trigger time. Share vibrating tasks between workers and plan the day so no one person runs a high-vibration tool all day. Build the running points total into how you allocate work.
• Take breaks and avoid long continuous bursts on the trigger.
• Don't grip harder than you need to. A tight grip and heavy push force feed more vibration into the hand. Let the tool do the work.
• Keep hands warm and dry. Cold makes vibration white finger worse and triggers attacks. Warm gloves (for warmth, not as a vibration control), warm-up time and dry conditions all help circulation.
• Do not rely on anti-vibration gloves to control HAVS. They are not a reliable control. They do little to reduce the lower frequencies that cause most hand-arm vibration damage, and the regulations do not let you count them as a control measure. Use gloves to keep hands warm — not to justify more tool time.

Health Surveillance

Where exposure is above the Exposure Action Value — or more simply, where people regularly use vibrating tools — you must provide health surveillance. The purpose is to catch early symptoms before they become permanent and disabling, and to check that your controls are working. It runs as a tiered system:

• Tier 1 & 2: a short baseline and annual questionnaire to screen for symptoms.
• Tier 3: a clinical assessment by a qualified occupational health professional where the questionnaire flags concerns.
• Tier 4 & 5: referral for formal diagnosis, staging and a decision on fitness for continued vibration work.

Alongside the formal process, keep health records, and actively encourage workers to report symptoms early. A culture where people feel able to say "my fingers are going white" without fear of losing their job is the single most effective early-warning system you have. Catching one worker at the first sign of blanching and moving them to lower-vibration work prevents a lifetime of disability and a serious compensation claim.

What It Means for a Small Trade Business

You don't need an in-house safety department to manage HAVS. For a small firm or a sole trader, it comes down to a handful of practical habits:

• Buy and use low-vibration tools and keep them maintained, with sharp blades and bits.
• Plan work to limit trigger time — rotate the heavy-vibration jobs and track the daily points total.
• Train people to recognise the symptoms — tingling, numbness, white fingers — and to report them early without blame.
• Arrange health surveillance for anyone regularly using vibrating tools.
• Keep records of your risk assessment, exposure estimates and health surveillance.
• Protect your own hands. Sole traders and working bosses get HAVS just like everyone else — and there's no employer to look after you. The hands you rely on to earn a living are worth protecting.

Quick Reference: HAVS Exposure Values

As a rough guide to how fast the points add up, powerful tools used on hard materials can reach 100 points (the EAV) in well under an hour and 400 points (the ELV) in around two hours of actual trigger time. Lower-vibration tools take much longer to reach the same totals — which is exactly why tool choice and trigger time are the levers that matter.

These are illustrative only — always use the actual declared vibration data for your specific tools (and remember real-world figures often run higher) with the HSE exposure calculator to work out your own numbers.

Frequently Asked Questions

What are the symptoms of HAVS?

The main symptoms are tingling and numbness in the fingers and hands, "vibration white finger" where the fingertips go white and bloodless (especially in the cold), loss of grip strength, and reduced dexterity that makes handling small objects difficult. Symptoms are often worse at night and in cold or wet conditions. Once established the damage is permanent, so reporting the first signs early is essential.

What is the exposure action value for hand-arm vibration?

The Exposure Action Value (EAV) is 2.5 m/s² A(8) — the daily exposure averaged over eight hours, equivalent to 100 points in the HSE points system. Above this level you must take action to reduce exposure and provide health surveillance. The higher Exposure Limit Value (ELV) of 5 m/s² A(8), or 400 points, must not be exceeded at all.

Do anti-vibration gloves prevent HAVS?

No. Anti-vibration gloves are not a reliable control for HAVS. They do little to reduce the lower vibration frequencies that cause most hand-arm vibration damage, and you cannot count them as a control measure under the regulations. Gloves are useful for keeping hands warm — which does help — but they must never be used to justify more tool time. The real controls are low-vibration tools, maintenance, and limiting trigger time.