Tube union, RMT will take strike action on March 15 in a row over pensions, job losses and contractual agreements.
London Underground Ltd (LUL) have started to impose 600 station staff job losses and have refused to rule out attacks on pensions or ripping up agreements on conditions of work despite discussions with the union.
TfL which ultimately are responsible for its subsidiary LUL, has had its funding cut by government.
But instead of standing up to ministers, they have tried to implement cuts to make our members pay for their funding crisis.
The deadline for the government and TfL to agree the details of the pension reform has been pushed back
until March 17.
RMT general secretary Mick Lynch said: "Our members will never accept job losses, attacks on their pensions or changes to working conditions in order to pay for a funding cut which is the government's political decision.
"Tube workers provide an essential service to the capital, making sure the city can keep moving and work long hours in demanding roles.
"In return they deserve decent pensions, job security and good working conditions and RMT will fight and tooth nail to make sure that's what they get."