Had a coworker that found that out the hard way. Got a DUI and didn't tell anyone. Then one day a few months later had a work trip in Canada. They stopped him at customs in Canada and shipped him back. Company had to fly someone else out there on short notice.

Still better than the coworker that flew to Canada on business and then while on the trip his name got added to the "NO FLY" list. That was a fiasco.