I lived in my country's capital for almost ten years, and since a huge part of the population there are in public service (you get in through a selection exam and once you get in you pretty much can't get fired, and the pay is pretty good). While I lived there, some of my friends would do this at work:
Use most of their work hours to study for a higher paying public service exam.
Play online multiplayer games. Everyday. (don't know if only within their department or connected to the outside)
Do nothing 60% of the time.
Work half the hours they were supposed to, because the whole department decided that they had enough people to turn an 8 hour shift into 4 hours and get everything done. When a new boss decided to end this and made everybody work their 8 hours, they rebelled and the department couldn't get anything done. And no one could be fired.
*etc
Not everybody did this, of course. I had some friends who worked their hours, and put their effort to it, but the culture was definitely messed up.