How do you dress in the snow help?

I have to start a new job tomrow packing salads , it’s cold environment so you need dress like your going to the snow and layer up to not get sick. I’ve never been to the snow so what am I advised to wear? Do I need wear 2 pairs of leggings and 2 sweatpants? How many sweaters do I put on? I don’t own a puffer jacket or snow jacket, I have a thin cardigan, longsleeve top, normal cotton zip up sweater, another zip up sweater and this thin flannel coat with hoodie. I see everyone with beanie and hoodie on and I was told my sweater I had on was not enough. So do I need a big coat or what? I bought a new flannel coat but it’s super thin Marterial , it’s not teddy soft material , just thin coat with hoodie. I have thermal socks for men very thick.
How do you dress in the snow help?
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