Her Royal Highness
Repeated tardiness or absence from work can be tolerated once or twice, but management must take action when it becomes a consistent issue. The most straightforward approach is to terminate the employee and focus on training others. However, alternative methods can effectively convey the message as well.
While workplace banter can be amusing, this passive-aggressive comment may have crossed a line. For Abby to have inspired this sign, her chronic absenteeism must have been significant. Ironically, she would likely avoid the very route mentioned on the sign. Nevertheless, Abby might have gotten away with her absenteeism so far.