I have always said people should get in to work by any means possible. Clearly in your case there is no possible way of getting in.
This is not the case for a large number of others who make little or no effort to get in if they cannot use their car.
Fair enough, would you pay for a member of staff to stay in a nearby B and B or hotel to make sure they can get in if the weather when they got to work got much worse? This is if they commute a distance. It would also make sure they would be in the next day as well?