Wal-Mart workers: Store closings due to plumbing are 'retaliatory'

``Wal-Mart's rationale for closing the Pico Rivera store--that it must undergo extensive plumbing repairs--is a farce, the complaint says. "City officials in Pico Rivera say that nothing has been brought to their attention and no permits at all have been sought for any work," according to the complaint. Wal-Mart temporarily shuttered the other four stores due to plumbing as a way to "mask" the retaliatory nature of the Pico Rivera closing, the complaint says.''