We make religious accommodations all the time under Title VII.

http://www.lc.org/resources/workplace.htm

She had an accommodation in place for her but then a coworker complained citing that she had a funny foreign book and wore a head dressing in that complaint. After that complaint, she was suspended.

http://www.csmonitor.com/USA/USA-Update/2015/0908/Muslim-flight-attendant-suspended-for-not-serving-alcohol.-Discrimination


http://www.wbtv.com/story/29994265/muslim-flight-attendant-says-she-was-wrongly-suspended

http://www.usatoday.com/story/news/2015/09/07/muslim-flight-attendant-suspended/71852754/