If a worker can't/won't do the job, they shouldn't have applied for it in the first place.
Hear Hear! If I, as an agnostic, were to refuse to sell a pack of Christmas cards to a customer due to my non-beliefs, would I receive the same treatment..................I think not.
@Big Dave Looks like Scimitar can relax, M&S say their policy is to place staff (not just Muslims) in areas of their stores where their religious beliefs won't be offended. Commonsense - as predicted - has prevailed.
However, no matter what 'your department' is, you will be required to assist in other departments during busy times/staff absence etc. Is it right that someone can 'pick and choose' where they work?
When I worked at M&S (Menswear) I was often asked/instructed to help out in foods, which I rather enjoyed - however when it came to doing date rotation in the chiller cabinets I wasn't so enamoured - but I still did it!