High‑visibility workwear for fall and winter: What employees on construction sites, maintenance yards and in logistics need

Autumn brings rain, poor visibility and lower temperatures; winter in Switzerland often brings snow, ice and icy winds. For employees on construction sites, at municipal depots and in logistics, classic high-visibility clothing is often no longer enough. This guide explains how to combine visibility, weather protection and freedom of movement and which Korntex solutions have proven themselves in practice.

Why high-visibility protection is different in autumn and winter

Compared with summer conditions, three conflicts dominate in autumn/winter: visibility in poor light, protection from wet and cold, and freedom of movement during physical work or getting in and out of vehicles. Only by combining these criteria can workplace safety and productivity be maintained.

Standards & regulations: what decision-makers need to know

The key visibility standard is EN ISO 20471. For buyers and public authorities, the following concrete, verifiable information is important:

• Typical minimum areas (according to EN ISO 20471): fluorescent area — Class 1: ≈ 0.14 m²; Class 2: ≈ 0.50 m²; Class 3: ≈ 0.80 m². Minimum retroreflective areas are typically higher for Class 3; exact values and placement are specified in the standard.
• The standard tests both fluorescence (in daylight) and retroreflection (in headlight conditions) using defined test methods and standards; test reports must document these measured values.
• Combinations (e.g. jacket + trousers, or jacket + high-visibility vest) must be assessed as a whole: the required total visible area can be achieved by combinations, as regulated by the standard.

Further information and an explanation can be found on the Korntex resource page EN ISO 20471 – briefly explained. For binding figures and legal interpretation, we recommend consulting the original standard (CEN/ISO) or the national standards body (SNV) and having the texts legally reviewed before publication.

Documentation and compliance notes for decision-makers

• Proof of conformity: manufacturer/supplier declaration plus valid test reports with measurement results (fluorescence and retroreflection values).
• Check CE / UKCA marking (where relevant) and include technical data sheets, care instructions and material descriptions.
• Recommended tender template / checklist (short version): place of use & hazard, desired visibility class, required material properties (waterproofness, insulation value), test reports and mandatory samples, delivery times, customisation/branding, warranty and returns of defective items.
• Legal note: the figures given here are practical guidance. For legally binding tenders, include the relevant standards documents and legal advice.

Core requirements by place of use

Selection differs by workplace. The following checklists help with the decision:

Construction site

• Visibility class according to traffic and proximity to machinery (with heavy traffic, generally Class 3)
• Waterproof, windproof and insulating outerwear – preferably multilayer
• Leg cut protection for work with chainsaws or cut-off saws
• Slip-resistant, insulated safety shoes with wet-weather protection
• Bright, high-contrast colours combined with wide retroreflective elements

Municipal depot / road maintenance

• High visibility even in low sun and snowfall
• Multipurpose jackets with removable inner layers and hood
• Robust gloves with cold protection and good grip
• Optional customisation for service identification – e.g. Custom high-visibility vests & lettering

Logistics & distribution

• Lightweight, breathable high-visibility jackets for frequent getting in and out
• Fluorescent high-visibility vests as an additional visibility layer over the work jacket
• Slip-resistant footwear with cold insulation
• Combinations that allow freedom of movement when lifting and reaching

Material & layering principle

The layering principle is central in the Swiss climate:

• Base layer: moisture-wicking underwear
• Mid-layer: insulating fleece or thermal layer for warmth
• Outer layer: windproof and waterproof high-visibility jacket with sufficient reflectors

Important material properties: waterproof membranes combined with high breathability (e.g. 2.5L/3L constructions), durable outer fabrics and reflective tapes with high abrasion and wash resistance. Check manufacturer information on hydrostatic head, breathability (MVTR) and demonstrated retroreflective performance.

Specific product categories & combinations

For practical use, the following Korntex categories are a good starting point:

• High-visibility vests (EN ISO 20471) – ideal as an additional visibility layer over workwear.
• High-visibility and work jackets – waterproof and windproof with an insulating inner layer for changeable conditions.
• High-visibility trousers & work trousers – some with reinforced knees, waterproof inserts or brace solutions.
• PPE gloves for winter use – cold- and moisture-insulating with secure grip.

Combination example: thermal underwear + insulating fleece vest + waterproof high-visibility jacket (Class 3 in heavy traffic) + waterproof high-visibility trousers. For logistics, a lighter outer material with a removable inner layer is recommended.

Care, maintenance and visibility throughout the season

Specific care recommendations (practical):

• Washing temperature: generally 30–40 °C (check manufacturer instructions). Higher temperatures can damage insulation material and retroreflectors.
• Detergent: mild, enzyme-free detergent; do not use bleach or fabric softener (they damage the reflective layer).
• Drying: air drying recommended; machine drying only if approved by the manufacturer and then on a gentle, low-temperature setting. Dryers can affect reflectors and coatings.
• Maximum wash cycles: reflectors can lose reflective performance with repeated washing; depending on use and soiling, recommend visual and, where appropriate, instrument-based inspection every 100–150 wash cycles. (Manufacturer instructions take precedence.)
• Repairs: repair or replace loose seams or damaged reflectors immediately; document damage for authority compliance.
• Cleaning heavily soiled retroreflectors: pre-treat with a mild cleaner, avoid mechanical brushing; perform a visual inspection after cleaning.
• For detailed care instructions, consult the product information and Korntex care guidance or contact your Korntex representative.

Procurement tips for decision-makers and resellers

Plan procurement seasonally and order samples to check fit before bulk orders. Ensure complete documentation of EN ISO 20471 conformity, request test reports and make sample testing a condition. Typical process steps:

1. Risk assessment of place of use (traffic volume, visibility, work activity)
2. Define the desired visibility class and material properties
3. Sample order and fit check; instrument-based acceptance test if required
4. Supply contract with test report, warranty, returns arrangement and delivery deadlines

Smaller supplier pools with stock in Switzerland reduce outage risks. Legal review of tender documents is recommended.

Practical cases from Switzerland

Case 1 – municipal depot: during road clearance in one canton, a depot combined waterproof jackets with fluorescent high-visibility vests to improve visibility despite snowfall and road salt and to protect jackets against abrasion.

Case 2 – logistics centre: drivers in a distribution centre use lightweight, breathable high-visibility jackets with a removable inner layer, ensuring continuous visibility during high physical activity.

Call to action

Looking for individual advice or samples? Arrange a consultation or order samples to test fit and visibility in your operation. Korntex advises public authorities, municipal depots, construction companies and resellers personally.

FAQ

Further down you will find a compact FAQ section with answers to the most important questions.

Extended FAQ (including procurement information)

• Which EN or Swiss standards apply to high-visibility clothing in autumn and winter?
  The key standard is EN ISO 20471 for high-visibility clothing. Other standards may be relevant depending on the activity (e.g. cut protection, flame protection). Observe national requirements and consult the original standards or SNV. Have the text legally reviewed before publication.
• How do I choose the right high-visibility class (Class 1/2/3)?
  The choice depends on traffic density, speed and the working environment: Class 1 may be sufficient with stationary or slow traffic; Class 3 is recommended with high traffic volumes and fast-moving vehicles. For tenders: document the risk assessment and require sample testing.
• Maintenance intervals and inspections?
  Regular visual checks before every use and documented inspections at least annually are recommended; inspect heavily used items more frequently. If there is doubt about reflectivity, arrange instrument-based testing.
• How should I care for high-visibility clothing so reflectors are preserved?
  Wash gently (30–40 °C), use mild detergent, no fabric softener, and preferably air dry. Visually inspect reflectors after every wash; replace damaged parts.