Ask these "Christmas haters" if they plan to go to work
on Dec. 25. If you hate it that much, just go into your
office and make like it's another workday. (I don't mean
the folks like police, fire, etc. who often are forced
to work the holiday... I mean that guy or gal in your
office who gets all hot and bothered when you wish them
a Merry Christmas. Ask them if they plan to volunteer to
work on Dec. 25--straight time.)
I am not a "Christmas hater" but I always volunteered to be "on call" and to perform backups, routine system work, upgrades, maintenance etc. on Christmas day.
Although this year Dec. 25 is a Sunday.
Better yet, tell them they can cover for coworkers who believe in Christmas!