Yes, this is illegal and a violation of the labor law. Because I know that most employees don't want to go above their supervisors head because of their fear of losing their jobs, I would suggest that you might want to go above the supervisors head to the next level and file a complaint, anonymously if possible. You can file a complaint with the Department of Labor and they will conduct an investigation without revealing the identity of the person who filed the complaint.
Answered on Feb 23rd, 2016 at 8:27 PM