Harrods' upmarket convenience store Harrods 102 is facing the threat of strike action less than two weeks after opening.
The company is planning to ditch its final-salary pension scheme next month but the Transport and General Workers Union and Amicus, which represent warehouse and distribution staff, engineers, mechanics, electricians and plumbers for Harrods 102 and its flagship store, claim that Harrods has failed to consult the unions on the changes.
Madeleine Richards, T&G regional organiser, said: "Our members are keeping their options open. If Harrods does not respond positively, this could go as far as the threat of an industrial action ballot."
Jennie Bremner, Amicus regional secretary, added: "Unless Harrods commits to negotiate constructively with Amicus we will have no choice but to ask our members if they are prepared to take strike action to protect their pensions."
However, a spokesman for Harrods said that the retailer had carried out full and proper discussions on the proposals and that both Harrods itself and its c-store would not be affected by the threat of strikes.
He said: "Allusions to possible industrial action are unfounded, premature and unhelpful - and certainly the Harrods Group will not be held to ransom by the threat of strike action which, while inconvenient, would not prevent the stores from trading."