Asda is facing mass legal action by a group of mainly female workers in its stores, who claim they are not paid the same as the mostly male employees in its distribution warehouses.
Although the jobs are different, the women claim they are of equivalent value.
Law firm Leigh Day, which is leading the action, confirmed it is representing “hundreds of former and current employees of the supermarket chain, mostly female”.
Asda said its clothing arm George was not involved. A spokeswoman added: “A firm of no win, no fee lawyers is hoping to challenge our award-winning reputation as an equal opportunities employer. We do not discriminate and are very proud of our record in this area which, if it comes to it, we will robustly defend.”