Sir Philip Green has been accused of “breathtaking arrogance” after workers were denied a living wage .
More than 100 staff at a depot supplying the billionaire’s Arcadia empire are due to strike on Cyber Monday – one of the busiest shopping days of the year.
The warehouse is one of three delivering stock for Topshop, Topman, Dorothy Perkins and Miss Selfridge.
Workers at the warehouse in Solihull, West Midlands, operated by logistics giant DHL, are paid the minimum wage of £7.20 an hour.
They are asking to get the Living Wage Foundation’s recommended £8.45 a hour.
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David Warwick, organiser at the GMB union, said: “It is very disappointing a man worth £5billion does not appear to care about the feelings of his workers – who have to struggle to make ends meet on minimum wage.
“He is showing breath-taking arrogance towards very workers who made him his fortune.
“Being rich does not and should not give anyone the right to ride rough shod over our members.”
The GMB is threatening more strike action in the run up to Christmas that could spread to other depots.
A spokesman for Sir Philip declined to comment.
DHL said in a statement: “We are disappointed that the GMB has announced its intention to hold industrial action.
“We believe our offer to be reasonable in the current economic climate.”
It added: “Detailed contingency plans are in place and we are confident that there will be no disruption to service. “We urge the GMB to return to the negotiating table to meet with us to resolve this matter at the earliest opportunity.”
The dispute comes a day after supermarket chain Lidl announced it would pay the volunatry living wage of £8.45 an hour, and £9.75 in London to its thousands of workers.
The pay call came as demonstrators protested outside the tycoon’s flagship Topshop store.
They called on Black Friday shoppers to boycott stores in a bid to persuade the Sir Philip to settle his BHS pensions dispute.
The tycoon’s reputation has been shattered by the controversial sale of BHS for £1 last year to a group investors with no retail experience.
The chain went bust earlier this year, with 11,000 jobs losses, and a £571million black hole in its pension scheme.
Sir Philip promised MPs five months ago that he would “sort” the pensions issue to ensure the scheme’s 22,000 members would not lose out.
However, the Pensions Regulator recently kicked off legal action after getting frustrated that the tycoon had failed to come up with a decent offer.
There have been calls for Sir Philip’s £100million superyacht to be seized to help plug the pensions shortfall.
MPs have also backed demands for the billionaire, dubbed Sir Philip Greed, to be stripped of his knighthood.