Questions about health insurance after Divorce

My hu*****and and I are getting a divorce. He is a small business owner, and I am the one who gets the health insurance for the whole family from my employer.
My questions are:
1. If I don't tell my company about the divorce, and keep him on the plan, what are the chances they will find out?
2. If they find out, what are the consequences?


Thanks for all advices..