I have to disagree with you on this Shoshana... it all comes down to whether the employer has the right to impose their own religious views onto an employee.
I say no. I would be seriously pissed off if my employer told me that my actions were against his religion and then punished me for it. This reeks of tyranny.
If this flys, then anyone who works for a predominantly Catholic company could be fired for eating meat on Friday... or someone who works for a predominantly Jewish company could be fired if they are found to work on their home on Saturday... or even someone who works for a predominantly Christian company could be fired for not converting to Christianity.
Supporting the view of the company will have a very divisive effect on the country.