“We now call on Asda to sit down with us to reach agreement on the back pay owed to our members – which could run to hundreds of millions of pounds.”
An Asda spokesperson said: “This ruling relates to one stage of a complex case that is likely to take several years to reach a conclusion.
“We are defending these claims because the pay in our stores and distribution centres is the same for colleagues doing the same jobs regardless of their gender. Retail and distribution are very different sectors with their own distinct skill sets and pay rates.
“Asda has always paid colleagues the market rate in these sectors and we remain confident in our case.”
Lawyers have said that if Asda store workers win all further stages of their fight they could be entitled to several years’ back pay.
They say this will have implications across the retail industry and suggested victory might lead to supermarkets paying out around £8bn.
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