Steven Wilkerson spends long hours working alone at three restaurants in a Hess gas station in Tampa – a Dunkin’ Donuts, a Quiznos and a Godfathers Pizza – all for just $8.50 (U.S.) per hour. Three years ago he made just $7.50. The 28-year-old former U.S. Marine tried to find a role in communications, and later security, after his tour of duty in Iraq. He went to more than 30 interviews, but was told repeatedly that he didn’t have enough experience for jobs he wanted. “You know, everybody tells you when you’re in the military you’ll get any job you...