This isn't really about work, but rather procrastination. But you don't actually have to have work to be "to busy" to do whatever. I once rented a room in a house where the landlady was divorced and living off of alimony (this was a few years ago). She didn't have any hard demands on her time (like employment), but whenever she didn't want to do something she would tell other people she didn't have time. Funny thing was I think she actually believed it.