bored
So the guy was bored at work - join the club, pal. Many (most?) people hate their jobs. I find that even when work's busy it's still soul-destroyingly boring.
What makes ir worse is the attitude of nearly all the managers. They don't do anything except either sit behind a computer, pretending to work, or walk around micromanaging the shit out of the people who do the actual, physical work.
"Clean those crates!" Here I am, brain the size of a planet...