I do not have that problem. Last time it happened to me, I started learning medicine seriously, entire day on the job. Now I am pretty good, I can handle myself and my family, and I managed to fix several chronic problems of myown and several nasty things in others. Before that, when it happened again, I was developing big framework in arcane programming language. All the things I did due to the 'not having anything to do on the job' are very valuable to me now.

However, nobody was grumpy at me at any time.