USA TODAY Amazon is backtracking on a viral social media comment it made last week denying claims that time-pressed workers have to pee in bottles. The tech giant posted an online apology late Friday to U.S. Rep Mark Pocan following the company's snarky Twitter response to worker issues he raised nearly 10 days ago. The Democratic congressman from Wisconsin, replying to a tweet from a top Amazon executive calling Amazon a progressive workplace, said Amazon can't call itself a progressive workplace when it "union-busts and makes workers urinate in bottles.'' The company's official response on Twitter: "You don't really believe the peeing in bottles thing, do you? If that were true, nobody would work for us. The truth is that we have over a million incredible employees around the world who are proud of what they do, and have great wages and health care from day one.''