answer: #Person1# thinks #Person2# has goofed off. #Person2# says #Person2# knows what #Person2# is doing.
documents: #Person1#: I didn't expect to see you at this hour. You must have goofed off again.
  #Person2#: Goofed off? Maybe, but I'm not a clock-watcher. I finished doing what I should do and then knock off an hour earlier.
  #Person1#: You'll be sorry if the boss finds it out. He may probably give you the bag.
  #Person2#: I'm sure of what I'm doing.