ASDA staff are to protest at the company’s Leeds headquarters tomorrow against the imposition of new contracts that abolish rest breaks and enforce weekend working.

A campaign against the supermarket’s contracts has won the support of tens of thousands of members of the public as well as celebrities including actor Paul McGann.

Workers and supporters will gather at 12noon in Leeds City Square and march on the Asda headquarters nearby.

A petition calling on Asda to treat its workers with respect has received more than 23,000 signatures.

Asda says workers who refuse to sign the new contracts will be sacked on November 2.

The company, which is owned by US anti-union conglomerate Walmart, has even issued “job seeking” advice to staff facing the sack.

GMB national officer Gary Carter said: “We’re calling on Asda to respect its workforce and offer dedicated, long-serving staff a better deal.”