A friend of mine was an RN. He worked 3 nights/week (by choice b/c it pays more), and had more free time than anyone I know. He would "quit" and travel for a couple months and come back and be hired right back into his job.

He just finished grad school and is now a nurse anesthesias making more than he did before and working roughly the same.

Whether or not the trend keeps up it is hard to know.