Make sure they are double lens goggles with an insulating air gap between inner and outer lenses. All good ski goggles are like that, and won't fog. Cheap ski goggles have a single lens, and fog up like crazy, since there is nothing to insulate the humid inner air near your face from the cold outside air. It's very much analogous to double-pane versus single pane windows in a home in cold weather.
I always make sure family members spend a little more $$ on good goggles when we go on ski trips, as vision is one of the most important factors in skiing well and enjoying the day. A crappy pair of goggles can be frustrating and ruin a ski day.
Most good goggles also have a vent you can open/close, which is helpful in warmer weather. The vent is normally covered with foam so that snow can't get inside.
And last but not least, there are different lens colors and tints, and they all have pros and cons. I actually keep 3-4 lenses for my goggles, and will change them based on light conditions. When skiing out west, the light is often very flat, so yellow lenses or high contrast "sensor" lenses are a big help. I imagine the same considerations would apply for snow removal work depending on the time of day and typical lighting in your area.
Anyhow, shop around, I think it's money well spent when picking a good set of winter goggles. They can make vision effects a non-issue.
As captain obvious would say tho, do this *before* going outside! Never actually tried outside of scuba tho, so YMMV