Nick McNelly is Captain America. And Indie Jones, and Forrest Gump, and Spiderman. The 35-year-old Safeway cashier spends thousands of dollars of his own money on high-end costumes he wears at work.

The lighthearted wager began when lead cashier Letisha “Tish” Williams suggested an incentive to rally the team around ...

Last October, Safeway cashier Rebecca Martin collected $1,400 more from her customers than their groceries cost. Martin wasn't short-changing Safeway shoppers. Rather, she was taking the lead in the ...