Certify, a travel and expense management firm, has released the results of a study that showed workers in the U.S. frequent five restaurants. In order, they are Starbucks, McDonald's, Subway, Panera Bread, and Burger King. According to the annual report, "employee spending on travel and entertainment rose just over one percent in the past year."
Starbucks had 20,084 transactions in 2012 with an average of $7.54. That figure suggests that the money is being spent on traveling employees as opposed to clients.