The concept of "busyness" is something I find particularly interesting. I linked to an article by Harvard Business Review before that discussed the trap of acting busy just to appear to be busy to others or to yourself.
Today I came across an article by Randy Murray in which he addresses busyness from the point of view of a leader working with his staff. He says:
If you tell people to look busy or create an environment in which you give out unpleasant and unnecessary tasks when there’s not enough work, you’ll end up creating serious productivity problems for yourself. Your employees will learn how to slow down work to fill up time. They’ll avoid you. They’ll deceive you about the amount of time it takes to get things done.
In other words, don't persuade the people that work with you to fall into the busyness trap. On the contrary, encourage the to do the opposite.