Where is the line though?
"Would the exemption…extend to employers with religiously grounded objections to blood transfusions (Jehovah's Witnesses); antidepressants (Scientologists); medications derived from pigs, including anesthesia, intravenous fluids, and pills coated with gelatin (certain Muslims, Jews, and Hindus); and vaccinations[?]…Not much help there for the lower courts bound by today's decision."
Quoted from here.