FILE - In this Monday, Nov. 26, 2012, file photo, an employee walks a wide isle at Amazon.com's 1.2 million square foot fulfillment center, in Phoenix. Millions of shoppers are expected to click on items on Monday, Dec. 2, 2013, as retailers rev up deals to grab online holiday shopping dollars on the first working day after the busy holiday weekend. (AP Photo/Ross D. Franklin, File)