I just can't go with that, any way you cut it, it is stifling and repressive to way too many people. I understand a person of another faith, or no faith, may not enjoy it, but to request the silence of everyone else(which is what you are asking)is simply repression and tyranny. I would certainly agree that if one wants to boycott over the uttered word Christmas, being tossed in their direction, that is their right. But for that tiny sliver of people to expect everyone else to just shut up, as they celebrate, a holiday they apparently like, is just too much. Their must be a way to approach it from the other direction. No employee, for example should be made to say anything. They should not however be punished if they choose to do so, or, conversely if they prefer to say nothing at all.
I think the boss gets to decide what employees say to customers.
Frankly if they say Merry Christmas and use it in advertising it is fine by me. But to turn Christmas shopping into boycotting is silly and frankly makes Christians look bad.
After all, what would Jesus think about Wal Mart or Target or boycotts in honor of his birthday. For crying out loud.