Hand-Arm Vibration (HAVS) — Protecting Your Hands From Power Tools (2026)

What HAVS and Vibration White Finger Actually Are

Hand-Arm Vibration Syndrome is the umbrella term for the painful and disabling damage caused to the nerves, blood vessels, muscles and joints of the hand and forearm by regular use of vibrating power tools. It builds up over months and years of exposure. The crucial point every tradesperson needs to understand: HAVS does not get better. Unlike a strain or a cut, the damage is permanent. Catching it early only means you can stop it getting worse — you cannot reverse what's already done.

Vibration White Finger (VWF) is the most recognised form. It affects the blood circulation in the fingers, which go white, numb and cold — often triggered by cold or wet conditions. As it progresses, fingers may turn blue, then red and painful as circulation returns. In severe cases, blood flow loss can lead to ulcers and, very rarely, gangrene. The nerve component causes tingling and numbness, loss of grip strength, and loss of fine dexterity — you start dropping things, struggling to pick up small screws, or losing the ability to feel what you're holding.

HAVS is also strongly linked to carpal tunnel syndrome, where the nerve passing through the wrist is compressed, causing pain, tingling and weakness in the hand. For someone whose living depends on their hands, the end stage of HAVS can be career-ending and life-changing.

Which Tools Are Worst

The risk depends on how much a tool vibrates and how long you hold it while it's running. The worst offenders across the trades are the high-power percussive and rotary tools:

• Concrete breakers and road breakers — among the highest-vibration tools in any trade.
• Kango / SDS hammer drills and demolition hammers — heavy percussive action straight into the hands.
• Angle grinders and cut-off saws — high vibration plus the risk gets worse with worn or unbalanced discs.
• Orbital and belt sanders — lower per-second vibration but often used for long, continuous periods.
• Needle guns and scabblers — used for surface prep and de-scaling, intensely percussive.
• Chainsaws and brushcutters — significant exposure for groundworkers, tree surgeons and grounds staff.
• Plate compactors (wackers) and powered hand tampers — vibration through the handles all day on groundwork.

A blunt rule of thumb: the more a tool relies on impact or high-speed rotation to do its job, the more vibration it puts into your hands — and the less time you can safely spend holding it.

The Control of Vibration at Work Regulations 2005

The law that governs this is the Control of Vibration at Work Regulations 2005, enforced by the HSE. If you employ people — or work as a sole trader using vibrating tools — these regulations place a clear duty on the employer (and a duty of care on the self-employed) to assess and control the risk from vibration exposure. You can't just hand someone a breaker and let them go.

In practice the regulations require you to: assess the vibration risk your workers are exposed to; introduce controls to reduce that exposure; provide information and training so workers understand the risk and how to spot early symptoms; provide health surveillance where workers are likely to be regularly exposed; and keep records. The HSE can and does prosecute employers who ignore these duties, and HAVS is a leading driver of civil compensation claims against trade businesses.

The Exposure Action and Limit Values

The regulations set two key thresholds, both measured as a daily vibration exposure normalised to an 8-hour reference period — written as A(8) and measured in metres per second squared (m/s²):

• Exposure Action Value (EAV): 2.5 m/s² A(8) — the level of daily exposure at which you must take action to control the risk. At or above this, you need a programme of controls and you must provide health surveillance.
• Exposure Limit Value (ELV): 5 m/s² A(8) — the maximum amount of vibration any worker may be exposed to in a single day. This is an absolute ceiling. You must not exceed it.

The important thing to grasp is that these are daily figures that combine how much a tool vibrates with how long it's used. A high-vibration tool eats into your daily allowance fast — which is where the points system and trigger time come in.

The HSE Points System and Trigger Time

To make daily exposure easier to manage on site without doing physics on a clipboard, the HSE provides an exposure points system. Each tool is given a points value per hour of use based on its vibration magnitude. You simply add up the points for every vibrating tool a worker uses in a day:

• 100 points = the Exposure Action Value (2.5 m/s²)
• 400 points = the Exposure Limit Value (5 m/s²)

The figure that drives everything is trigger time — the actual time the tool is running and vibrating in the hand. Not the time on site, not the time the job takes, but the genuine "finger on the trigger" time. Workers consistently overestimate this; a breaker job that feels like "all morning" might be 90 minutes of real trigger time once you account for repositioning, clearing debris and resting.

The sobering reality is how quickly the worst tools get there. A high-vibration concrete breaker or heavy demolition hammer can reach the Exposure Action Value in well under an hour of trigger time, and the daily Exposure Limit Value in a couple of hours. That's why "I only used it for a bit" is no defence — with the highest-vibration tools, "a bit" is the whole day's safe allowance.

How to Reduce Exposure

Controlling vibration is about reducing both the magnitude and the trigger time. The most effective controls, roughly in order of impact:

• Use lower-vibration tools and the right tool for the job. Modern tools designed for reduced vibration can dramatically cut exposure. Check the manufacturer's declared vibration figures when buying — but treat them as a guide, as real-site figures are often higher.
• Keep tools maintained and consumables sharp. A blunt drill bit, worn grinding disc, dull chainsaw chain or unbalanced cutting blade forces the operator to push harder and dramatically increases vibration. Sharp, balanced, well-maintained tools are one of the cheapest controls there is.
• Limit trigger time and rotate jobs. Plan work so no one person is on the breaker all day. Rotating high-vibration tasks between team members spreads the exposure and keeps everyone below the limits.
• Use anti-vibration mounts and tool suspension. On larger or static tasks, mounts, jigs and tool balancers reduce how much vibration reaches the hands.
• Keep warm and dry. Cold and wet conditions reduce circulation and make vibration damage worse. Warm gloves, hand warmers and keeping hands dry help maintain blood flow — this matters most for outdoor winter work.
• Be realistic about "anti-vibration gloves". So-called anti-vibration gloves are of limited value — they do little to reduce the low-frequency vibration that causes most HAVS damage, and a poorly fitting glove can make you grip harder, which increases exposure. They are useful for keeping hands warm, but they are not a substitute for controlling vibration at source. Do not rely on them as your main control.

Health Surveillance and RIDDOR Reporting

Where workers are regularly exposed at or above the Exposure Action Value, the employer has a duty to provide health surveillance. This typically starts with a baseline questionnaire and tiered assessment, escalating to examination by an occupational health professional if symptoms appear. The purpose is to catch the very early signs before they become disabling — because once symptoms are established, the only thing surveillance can do is stop further damage by removing or reducing exposure.

A confirmed case of HAVS in an employee is reportable under RIDDOR (the Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 2013) where it is linked to their work and diagnosed by a doctor. Carpal tunnel syndrome connected to vibrating tools is similarly reportable. Failing to act on health surveillance findings — letting a worker carry on with the same exposure after early symptoms are flagged — is exactly the kind of negligence that turns into a successful compensation claim.

A Leading Cause of Occupational Ill-Health Claims

HAVS is not a niche problem. It is one of the most common occupational diseases in construction and a leading source of ill-health compensation claims against trade businesses. Claims can run to tens of thousands of pounds per worker, and they often arrive years after the exposure, when the business has long since lost the records that would have shown it acted responsibly. Keeping clear records of risk assessments, tool exposure, training and health surveillance is both a legal duty and your best protection if a claim ever lands.

The damage is permanent. The controls are cheap and well understood. There is no good reason for any tradesperson to lose the use of their hands to a risk that the law has required us to manage since 2005.

Quick Reference: Vibration Exposure Limits UK