I would engage HR to do a complete investigation. If I found the charges to be true I would recommend termination. Improper time charging is a serious violation.
Wow, so rather than confront the situation directly by talking to your employee to determine the accuracy of the complaint and to verify if this was willful problem vs a gross misunderstanding, you'd instead go running to HR to do your work for you. Based on that answer I wouldn't hire you, either.
Reading the question, it didn't even occur to me that the manager might be advising the wrong code on purpose, so I was surprised to see one answer recommending termination. I would: 1) Double check the correct charge code. Nothing worse than making a stink and finding out you're the one with egg on your face. 2) Talk to the manager and ask him what happened. Pry and try to find out where he/she got their information. Perhaps he was misinformed, perhaps it was intentional, perhaps it was unintentional but still a mistake on his part. 3) If its intentional, than termination or disciplinary action is required. (Although the charges can be re-applied to a correct charge code, so I don't see what a manager would have to gain by this.) I don't work with unethical people. 4) If it was a mistake, as part of his penance, he's got to work with finance to fix it and see all the charges are applied correctly to the right cost codes. Then he or she needs to write an email to the owners of the CCs informing them of the mistake, informing them its already been corrected but they may see evidence of the error and the correction when they review their books, and making an apology. 5) If you're particularly pissed off about it (his attitude about the situation would have a big part of my attitude about it), or its caused a stink with upper management and you feel additional penance is required, give him responsibility for a particular task that no one wants to do - thankless jobs like organizing the next office move, organizing a team event, reporting drafts, you get the idea..
I found this inappropriate. I felt they were phishing for information to see if I would say something negative. My answer was I get along with everyone?
This is a common trick question with no 'correct' answer, just like the "what is your greatest flaw" question... The most reliable approach to answering a question like this is to illustrate how you always try to reach a middle ground with people. You divide and compromise rather then enter into a power-struggle with your co-workers.
A man is sitting in a boat which is located in a pool and there is also a rock at the bottom of the pool. If the man pulls the rock out of the water and places it in the boat, does the water level increase or decrease?
This is actually wrong. The water level actually increases. The amount of water displaced when out of the boat is equal to the volume of the rock, but when the rock is moved to the boat it is based on the mass of the rock. Since the rock is denser than water the water level rises.