UV is a real health risk for UK outdoor workers. Outdoor workers are 60% more likely to develop skin cancer than those who work indoors, according to Skcin. UPF-rated workwear blocks UV at the fabric level. No sunscreen to reapply, no gaps in coverage. For the full picture on staying safe in summer, see our Complete Guide to Summer Workwear.
Why UV matters for UK outdoor workers
People assume the UK sun isn't strong enough to cause serious harm. That's wrong. The UV index in the UK can reach 7 (High) between April and September. That's the same level that causes sunburn in under 20 minutes on fair skin.
Research from Imperial College London, published in the British Journal of Cancer, found that occupational UV exposure leads to around 48 deaths and 241 melanoma cases every year in the UK. That works out at roughly one death and five new melanoma cases every week. According to the British Safety Council, deaths linked to occupational UV nearly doubled between 2000 and 2019.
The HSE is clear: UV damages skin even on cloudy days. A tan is not a sign of health. It's a sign your skin has already been damaged. The damage builds up over years. By the time it shows, it can be too late to reverse.
Skin cancer comes in two main forms. Non-melanoma skin cancer (NMSC) is the more common type. It appears on areas of skin exposed outdoors, like the neck or head. Malignant melanoma is rarer but far more serious. It can spread to other organs. The HSE has estimated over 800 NMSC cases in UK construction workers from UV in a single year. Construction is just one sector. The risk runs across every outdoor trade.
Which UK workers are most at risk?
The HSE identifies these groups as having the highest UV exposure at work:
- Construction workers — site operatives, groundworkers, steel fixers
- Farm and agricultural workers
- Market gardeners and landscapers
- Road workers and highways crews
- Outdoor activity and leisure workers
- Public service workers — refuse, postal, parks and grounds
- Telecoms and utilities field engineers
- Outdoor events and festival staff
If your team spends more than an hour a day outside between April and September, UV is on their risk register. Full stop.
What is UPF — and how is it different from SPF?
SPF is the rating on a bottle of sunscreen. UPF is the rating on a piece of clothing. Both measure how well something blocks UV rays from reaching your skin. But they work very differently.
Sunscreen sits on top of your skin. It wears off with sweat, rubbing, and time. You need to reapply it every couple of hours. On a busy site, that doesn't happen. UPF is built into the fabric itself. Put the garment on in the morning. The protection is there all day.
A plain white cotton t-shirt has a UPF of around 5. That means roughly 1 in 5 UV rays gets straight through to your skin. A UPF 50+ garment lets through fewer than 1 in 50. That's less than 2% of UV reaching your skin. The difference is enormous.
UPF also covers both UVA and UVB rays. UVA causes long-term skin ageing and is linked to melanoma. UVB causes sunburn and skin cancer. Good UV workwear blocks both.
The UPF rating scale explained
UPF ratings follow a set scale. Here's what each level means in plain terms:
| UPF rating | Protection level | UV that gets through |
|---|---|---|
| UPF 15–24 | Good | Up to 6.7% |
| UPF 25–39 | Very good | Up to 4.1% |
| UPF 40–50+ | Excellent | Less than 2.5% |
For workwear, UPF 40+ is the minimum worth buying. That's also the threshold set by the European standard. Anything below 40 doesn't qualify as sun-protective clothing under the standard. UPF 50+ is the best you can get. It blocks over 98% of UV radiation.
EN 13758-2: the UK standard for UV protective clothing
The standard to look for is EN 13758-2 (also written BS EN 13758-2 in the UK). This is the European standard that covers UV-protective clothing labels and claims. It has two parts.
EN 13758-1 covers how fabrics are tested. Samples go through a spectrophotometric test. That means a machine measures exactly how much UV radiation passes through the fabric. It's a lab test with a specific pass/fail threshold.
EN 13758-2 covers the classification and labelling rules. Under this standard, a garment must have a UPF above 40 to carry a sun-protection claim on its label. If you see "UPF 40+" or "UPF 50+" on a garment sold in the UK or EU, the manufacturer is claiming it meets this standard.
What to look for: check the product label or product page for UPF 40+ and a reference to EN 13758-2. If neither is mentioned, the garment hasn't been tested to the standard. That doesn't mean it offers zero protection. But it means you can't verify the claim.
Does hi-vis clothing protect against UV?
This is the most common mistake we see. Many workers assume that because they're wearing hi-vis, they're protected from the sun. They're not — not automatically.
Hi-vis clothing is tested and rated to EN ISO 20471. That standard measures one thing only: how visible you are. It covers the colour and reflectivity of the fabric. It says nothing about UV protection.
A hi-vis vest can be fully compliant with EN ISO 20471 Class 2 and have zero UPF rating. The two standards are completely separate. Wearing a hi-vis vest with no UPF rating is the same as wearing a plain vest when it comes to UV. Your arms and torso are still exposed.
Some hi-vis garments do carry a UPF 40+ rating as well. You'll find options in our range that hold both EN ISO 20471 and a tested UPF rating. But you need to check the product spec. Don't assume. Look for both ratings on the label.
What to look for when buying UV workwear
Here's what actually matters when you're choosing UV workwear for your team.
UPF rating first. Look for UPF 40+ as the minimum. UPF 50+ is better for workers with long sun exposure. Check the product page — not all workwear carries a tested UPF rating.
Fabric and weave. Tight-weave polyester and nylon block more UV than loose-weave cotton. Synthetic fabrics generally perform better. Darker colours tend to block more UV than pale ones, though good UV workwear can be light-coloured if the fabric construction is right.
Coverage matters. A short-sleeve t-shirt leaves your forearms exposed all day. Long sleeves, high collars, and garments with neck coverage cut down the skin area that gets direct UV. For high-risk roles, long-sleeve options are worth the extra cost.
Does the protection wash out? This depends on how the UPF is built in. If it's part of the fabric construction — the weave, fibre density, and material — it won't wash out. If it's a chemical treatment applied to the surface, it may degrade over time with repeated washing. Check the product spec for details.
Here are some UV workwear options to consider:
Leo Forda Hi-Vis T-Shirt EcoViz Class 1 Orange or Yellow Navy
Leo Wringcliff Long Sleeve Hi Vis Polo Shirt ISO 20471 Class 2
Leo Workwear Hi Vis Long Sleeve T Shirt Orange or Yellow Navy
Portwest S889 Action Shorts Multi Pocket Work Shorts UPF 50+
For a full range of tested UV workwear options, browse our collection:
If you need hi-vis t-shirts with breathability and UV cover in mind, see our guide to breathable hi-vis t-shirts. For lightweight legwear that works in the heat, see our summer work trousers guide.
A layered approach: clothing, hat, and suncream
UV workwear covers most of your skin. But it doesn't cover everything. Your face, neck, and hands are still exposed. Those are the areas where most work-related skin cancers show up first.
The HSE recommends using a sunscreen of at least SPF30 on any skin that isn't covered by clothing. Apply it before you start work. Reapply it at breaks. A small tube carried on site makes that easy to do.
Stokoderm Protect Cream 100ml SPF50 Professional Sun Protection Workplace
A hat with a brim or neck flap covers the back of your neck and ears — two spots that clothing often misses. Staying in the shade at lunch keeps your cumulative UV dose down. None of this is complicated. It just needs to be part of the routine.
If you're buying for a mixed team, see our women's summer workwear guide for UV-rated options cut for female workers.
Employer responsibilities for UV protection in the UK
Under the Management of Health and Safety at Work Regulations 1999, employers must assess health risks their workers face. UV radiation is a recognised health risk. If your team works outdoors between April and September, UV belongs on your risk assessment.
The HSE is straightforward on this: there is no specific legal requirement to provide suncream or UV-protective clothing. But the duty to assess and control risk is clear. UV exposure leads to occupational skin cancer. That makes it a workplace hazard like any other.
In practice, the steps are simple:
- Add UV to your outdoor risk assessment
- Provide UV-rated clothing for outdoor roles (April to September at minimum)
- Give workers access to SPF30+ suncream for exposed skin
- Arrange shade or cover for break times
- Brief workers on the risk — most underestimate UK UV levels
The British Safety Council notes that only 24% of UK workers would be more likely to use sun protection if their employer provided it. That means education matters as much as equipment. Tell your team why it matters, not just what to wear.
Frequently asked questions
What does UPF mean on workwear?
UPF stands for Ultraviolet Protection Factor. It's a rating that tells you how much UV radiation a fabric blocks. A UPF 50+ garment blocks over 98% of UV — letting less than 2% through to your skin. It works like SPF on sunscreen, but it's built into the fabric rather than applied to your skin. It doesn't wash off or wear away during a shift.
Does hi-vis clothing protect against UV?
Not automatically. Hi-vis clothing is rated to EN ISO 20471, which only measures visibility. That standard says nothing about UV protection. A hi-vis vest can fully meet EN ISO 20471 Class 2 and still have no UPF rating at all. Some hi-vis garments carry both ratings — check the product label or spec sheet for a UPF 40+ rating before assuming your hi-vis provides sun protection.
What UPF rating do I need for outdoor work in the UK?
UPF 40+ is the minimum worth buying for outdoor work. Under the European standard EN 13758-2, a garment must have a UPF above 40 to carry a sun-protection claim on its label. For workers with long daily sun exposure — construction, landscaping, agriculture — UPF 50+ is the better choice. It blocks over 98% of UV and provides a stronger margin throughout a full shift.
Does UV protection wash out of workwear?
It depends on how the UPF is built in. If the protection comes from the fabric construction — the weave density, fibre type, and thickness — it won't wash out. If it's a chemical treatment applied to the surface, it can degrade with repeated washing over time. Check the product spec or care instructions. Well-made UV workwear from reputable brands typically uses construction-based UPF that holds up to regular washing.
Is there UV risk in the UK even on cloudy days?
Yes. Cloud cover reduces UV levels but doesn't block UV entirely. Up to 80% of UV radiation can pass through light cloud. The HSE is clear that UV damages skin even on overcast days. Workers who spend all day outdoors accumulate UV exposure year-round, not just on sunny days. UV risk in the UK runs from April through to September and can peak at UV Index 7 (High) on clear summer days.
Are employers required to provide UV protective clothing?
There is no specific legal requirement for employers to provide UV-protective clothing or suncream. However, the Management of Health and Safety at Work Regulations 1999 require employers to assess and control health risks — and UV radiation is a recognised occupational health risk for outdoor workers. In practice, this means UV should be on your risk assessment for any team working outdoors from April to September, with appropriate controls in place.