A group of workers at a…warehouse [run by Schneider Logistics] handling goods bound for Walmart…have filed a class-action lawsuit claiming they've been working under abusive conditions…Walmart itself is not being sued…Schneider's parent company, Schneider National, said Schneider would "vigorously defend" itself in court. “Schneider is confident that it is in full compliance with all applicable statutes and regulations governing its warehousing operations, and we expect the same of our vendors,"…The lawsuit comes on the heels of a handful of alleged labor law violations filed last week against two temporary labor agencies at the facility...Asked about the commission's allegations last week, Dan Fogleman, a Walmart spokesman…[said] the company is "not involved in this matter." He added, "The contracts we have in place with third parties require that they follow the law, and that’s something we fully expect." [also refers to Amazon]