There is a VERY good reason to tell them, and document the fact. If you commit a violation and they know about it they must act within 3 years or lose their cas

There is a VERY good reason to tell them, and document the fact. If you commit a violation and they know about it they must act within 3 years or lose their case. However if they don't know about the violation they can go after you 15 years later. Don't do it in secret. If you afraid they'll kick you out line up another job just in case.