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Thank you for your reply. I apologize for the delay in getting back to you as I was out of my office for bit. In any event, an employer that is not a governmental agency or an officer of the court (like an attorney) has no legal duty to notify law enforcement that someone who might have a warrant issued in their name has entered the State. Likewise, that would not be considered as harboring a fugitive. What would be considered harboring a fugitive is if the policy showed up to your business and asked if he was there and you lied to them and said he wasn't when he was. Making false statements about his whereabouts would also get you in trouble.
Please let me know if you need any clarification.