Question: 
“We’ve had a request for a religious accommodation, but I think the employee wants to get out of following the policy for other reasons. How do I determine whether a religious belief is legitimate and sincerely held?”

Answer:

Ordinarily, you should assume that an employee’s request for a religious accommodation is based on a sincerely held religious belief, observance, or practice. The definition of religion is broad and protects beliefs, observances, and practices you may not be familiar with. That said, if you have an objective basis for doubting either the religious nature of the belief or that it’s sincerely held, you can request additional supporting information.

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This Q&A does not constitute legal advice and does not address state or local law.