Thousands of Tube workers have voted to strike over pay deals and proposed job losses.
More than 2,800 members of the Rail, Maritime and Transport (RMT) union voted to strike across all lines for 48 hours starting at 7pm on Tuesday 9 June.
The union has accused London Underground of refusing to rule out compulsory redundancies that would put 3,000 jobs at risk.
A five-year pay offer by London Underground has also been described as “unacceptable” by the union.
RMT general secretary Bob Crow said: “This is a magnificent result which underlines the anger that has been provoked by management in their confrontational approach on pay and job security.
“If London Underground and Transport for London (TfL) want to avoid confrontation they should withdraw their plans to slash jobs and guarantee there will be no forced redundancies, start talking seriously about pay, and call off the bully managers.”
ATfL spokesman said the union had failed to engage in any meaningful talks on pay, and instead submitted unrealistic claims of a 5% payrise in the middle of a recession.
“The RMT leadership knows full well we are seeking to end the duplication of back office jobs and that no front-line staff will be affected,” he said. “Our offer guarantees real wage increases for the next five years. Our employees have good pay and conditions and we are seeking to negotiate a further fair and affordable pay agreement that provides them with long-term stability in an extremely tough economic climate.”
Tube drivers on the Victoria line staged a 24-hour strike earlier this month in protest against the failure of London Underground to install safety equipment on tube trains to stop doors opening on the wrong side of the train when it arrives at a station.
The RMT had also alleged that members were being bullied, harassed and victimised, and called for the reinstatement of a sacked driver.
RMT represents more than 10,000 members across London Underground and TfL.