Voluntold

Anytime your boss or supervisor tells you to do something that is not part of your job, in order to make him/her look good, you have been voluntold. The idea, from the boss's viewpoint, is to go above and beyond the call of duty without personally doing much of anything.

Example
"Why are you shampooing the carpet? You're a network analyst!"

"I got voluntold to relieve Housekeeping after the IT Lead spilled his coffee."

History
The word voluntold has it's roots in military service, where it is often euphemised as "Chain of Command." Voluntold is high in the running for the English language's most self-explanatory word, despite not being an actual word. When used in the correct context, the word, "Voluntold" will always be understood by individuals who have never heard it, provided said individuals have ever been employed before.