The winter work jacket is the garment your crew wears most from October to April – and the one most often bought wrong: too thin for standing work at −15 °C, too warm for heavy work, a hood that does not fit over a helmet, or not the hi-vis class the site asks for. This guide goes through the choices in the order that matters on a construction site.
1. Start with the work, not only the temperature
How much you move matters as much as the forecast. A worker carrying material all day produces a lot of heat; a banksman, traffic controller or crane signaller standing still at −10 °C produces very little. Choose the jacket type for the activity level first, then the warmth.
| Jacket type |
Best for |
Watch out for |
| Insulated winter jacket |
Most outdoor site work from around 0 °C down to hard frost |
Can get too warm in heavy work – look for ventilation zips |
| Winter parka |
Standing or low-activity work, long shifts in hard frost and wind |
The longer cut can get in the way when climbing or kneeling |
| Softshell (also lined winter softshell) |
Active work, dry cold and milder winter days, worn over a warm mid-layer |
Usually water-repellent, not fully waterproof; less warm when standing still |
| 3-in-1 jacket |
One jacket from autumn to spring; changing weather |
The zip-in inner layer is usually lighter than dedicated winter padding |
For a deeper comparison of the three main types, read softshell vs insulated winter jacket vs 3-in-1.
2. Read the standards on the label
EN 342 – protection against cold
EN 342 covers clothing for cold environments, below about −5 °C. The label gives the thermal insulation value Icler in m²·K/W (higher means warmer), an air permeability class from 1 to 3 (3 is the most windproof) and optionally a water penetration class (X means not tested). The insulation value is measured with a defined set of underwear, so treat it as a way to compare jackets, not as a guaranteed comfort temperature – activity, wind and what you wear underneath change the result. Clothing for cool conditions (around −5 °C and above) is tested to EN 14058 instead.
EN 343 – protection against rain
EN 343 gives a water penetration class (1–4) and a breathability class (1–4); a third mark shows whether a rain-tower test was done (X if not). For example, 3:1 X means good waterproofing but low breathability. Wet snow and sleet around 0 °C are common in the Nordic winter, so a waterproof class 3 or 4 with taped seams is worth having. More in our EN 343 guide.
EN ISO 20471 – hi-vis class
Class 3 has the largest fluorescent and reflective area, then Class 2 and Class 1. A long-sleeved jacket with reflective bands on the sleeves can reach Class 3 on its own. Road works normally require Class 3; on building sites, follow the site rules. The classes are explained in hi-vis classes EN ISO 20471.
3. Hi-vis or non-hi-vis?
If the site requires hi-vis clothing, the outermost layer must be a certified EN ISO 20471 garment. A black or grey work jacket with reflective piping is not a hi-vis garment, however visible it looks. Non-hi-vis winter jackets are fine for indoor finishing work, workshops, warehouses without traffic, travel to and from work, or under a site rule that allows a certified hi-vis vest on top. If you plan to wear a vest over a padded jacket, size the vest for it. See the full choice of certified jackets in hi-vis workwear.
4. Hood and helmet compatibility
Never wear a thick hood under a safety helmet: it stops the harness from fitting properly. In freezing weather use a thin balaclava or a helmet liner under the helmet, and a jacket hood that is large enough to go over the helmet, labelled helmet-compatible. A detachable hood is useful when the jacket is also worn without a helmet, and an adjustable hood keeps your side vision clear.
5. Layering and sizing over winter layers
The jacket only works as part of a system: a base layer that moves sweat away (wool or synthetic, not cotton), a mid-layer such as a fleece or hoodie, and the jacket on top. Size the jacket with the mid-layer on:
- Reach both arms forward and up – the sleeves should still cover the wrists and the back should not ride up.
- Bend down as if to pick something from the floor – the back hem should cover the lower back.
- Close the zip with the mid-layer on – you should have room to move without the padding being pressed flat.
If you are between two sizes, the larger one is usually right for winter. Measurements are in our size guide. For women, many winter work jackets are cut unisex, such as the Pesso LYRA from size S – compare chest and sleeve length in the size chart.
6. Pockets and details that matter in winter
- Large zip pullers and pockets you can open with gloves on.
- An inside pocket for the phone – batteries last longer when kept warm.
- ID or access-card pocket and radio loops for site staff.
- Inner storm cuffs and an adjustable hem to keep snow and wind out.
- A two-way front zip for sitting in machines and wearing a harness.
- Ventilation zips for heavy work, so you do not have to open the whole jacket.
Examples from our range
Browse all jackets, lighter softshell jackets and work jackets for spring and autumn. For the rest of the winter outfit – boots, gloves and trousers – see winter workwear for construction crews. EU companies with a valid VAT number buy without VAT (reverse charge), and we deliver to EU countries from Estonia.
FAQ
What temperature is a winter work jacket good for?
No standard gives one fixed temperature. EN 342 gives an insulation value you can use to compare jackets, but the real limit depends on activity, wind and the layers underneath. Standing work needs much more insulation than active work.
Is a softshell jacket enough for a Nordic winter?
For active work in dry frost, with a warm mid-layer, often yes. For standing work, long shifts outside or wet snow, choose an insulated waterproof jacket or parka.
Can I wear my hood under the helmet?
No. A thick hood stops the helmet from fitting correctly. Use a thin helmet liner or balaclava and a helmet-compatible hood over the helmet.
Should I order one size up?
Only if you are between sizes or wear a thick mid-layer. Try the jacket with your winter layers and check arm reach and back length.
