I've seen a lot of guys get in trouble for not reporting things on the form we get every year (MVDC). Years ago you'd get sent home for the day and told to not come back until you clean it up.
Now, drivers are getting fired for integrity when they have failed to report violations, accidents, or suspensions on their MVDC. So much that my local's website has posted info on how we can obtain our own abstracts (
http://teamsterslocal804.org/story/don’t-get-jammed-your-mvdc).
I've personally seen drivers get fired for this, including both drivers with good and bad reputations, don't get caught up, and let me tell you something, UPS is making a lot of these cases stick at arbitration.