Of course they don't have a right to receive, but if the government honors the beliefs of there employees people like Graham who insult them will not speak at the work site.
So you would advocate not having any type of Easter observance at all, since that might 'offend' someone. I would presume you'd also advocate doing away with the President's prayer breakfast, having a Congressional chaplain and all of that kind of thing. After all, it might offend someone.
So is that really what you are advocating?