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.
Neither of us speaks for Jesus. Boycotting is not silly. It is a legal non violent way to make a point. It is done all the time on issues you may be in sympathy with. It doesn't make Christians look bad at at all, except to people that want to put them in the back of the bus, anyway, and why would Christians care what they think? I don't think any employee should be forced to say Merry Christmas. They simply should not be prohibited from saying it. The store has ever right to decide to advertise the holiday or not. Christians have every right to shop where they want, and if the store is prohibiting its Christian employees from saying the word. I can understand why they would want to shop elsewhere.