I suppose if the job is helping direct people, he will have his hands full during rush hour and have all day in between to contemplate the signage needed most.

The mystery to me is how he's allowed to block off large sections of floor/wall for hours to make them. You'd think management would be cross about that, at least.

It's his job to direct traffic through the space, I'm sure they understand that he knows best when and how to do the work.