 The practice has been documented as recently as 2019.On September 4, 2008, the Mexican Supreme Court of Justice ruled that Wal-Mart de Mexico, the Mexican subsidiary of Wal-Mart, must cease paying its employees in part with vouchers redeemable only at Wal-Mart stores.On May 21, 2019, "The Washington Post" published an article highlighting Amazon's new system of "gamification", which rewards employees who complete high numbers of orders with Swag Bucks or voluntary play video games, which can then be used to buy Amazon-themed merchandise.