A U.S. watchdog group has called on Wal-Mart Stores Inc. to put a stop to what it says is worker abuse at a factory in the Philippines that makes apparel for the retailer. The Worker Rights Consortium said the Chong Won factory, which primarily makes clothing for Wal-Mart supplier One Step Up, has engaged in labor rights violations including forced overtime and minimum wage violations. Wal-Mart has hired an independent firm to monitor the factory and would continue to investigate allegations of labor rights violations, the retailer said in a statement.