I intuit that he had been clocked by a speed camera or going through a red light.
When that happens you are sent an infringement notice and you have three choices - one is to pay the fine immediately in which case you may lose your license. Moving traffic violations as you call them in US attract penalty points. Get enough of these and you lose your license for a period.
With speed and red light cameras, if you were not the driver of the car in the photograph you can nominate the actual driver and then they will have to pay the fine and wear the penalty points. What the boss was doing was sussing out the employee to see whether she would allow him to nominate her as the driver to save his license. Quite unethical and also illegal.
The third option is to fight it in court. The speed cameras are not checked often enough and some have been registered buses 20 kph over the speed limit while crawling uphill in heavy traffic. Most people just pay up though. Speed cameras are great money spinners for the state governments.