Outdoor work requires proper preparation, especially in severe winter weather conditions. The US Department of Labor offers tips for dressing for outdoor workers:

• Wear at least three layers of loose fitting clothing. Layering provides better insulation.
• An inner layer of wool, silk or synthetic (polypropylene) to keep moisture away from the body. Thermal wear, wool, silk or polypropylene, inner layers of clothing that will hold more body heat than cotton.
• A middle layer of wool or synthetic to provide insulation even when wet.
• An outer wind and rain protection layer that allows some ventilation to prevent overheating.
• Tight clothing reduces blood circulation. Warm blood needs to be circulated to the extremities. Insulated coat/jacket (water resistant if necessary)
• Knit mask to cover face and mouth (if needed)
• Hat that will cover your ears as well. A hat will help keep your whole body warmer. Hats reduce the amount of body heat that escapes from your head.
• Insulated gloves (water resistant if necessary), to protect the hands
• Insulated and waterproof boots to protect the feet