Are there any work practices which a religion might consider wrong?

Without a doubt, there are professional practices that would run afoul of religious (or even "ethical") considerations. Deceptive or downright dishonest sales techniques, misrepresentation (the old "bait and switch") and failing to provide promised products or services are some of the first that come to mind which could be considered "wrong" according to one's religion.

There are many valid and correct work practives that some religions consider wrong. For example, wearing ceartin kinds of respiratory protection required that the wearer be clean-shaven, yet some religions, including branches of Judaism and Islam, among others require their male followers to wear beards.