Here's a trend you'll be reading more about: part-time "job sharing," not only within firms but across different businesses.

It's already happening across the country at fast-food restaurants, as employers try to avoid being punished by the Affordable Care Act. In some cases we've heard about, a local McDonalds has hired employees to operate the cash register or flip burgers for 20 hours a week and then the workers head to the nearby Burger King or Wendy's to log another 20 hours. Other employees take the opposite...