Crisis talks to prevent a 24-hour Tube strike from happening later this week were taking place on Monday.
Representatives from train drivers union ASLEF and Transport for London (TfL) were meeting to try to negotiate a deal to avoid the planned industrial action for Thursday (October 5).
ASLEF drivers voted in favour of a 24-hour walkout following an ongoing dispute with London Underground about working hours and pay.
The day-long strike threatens to bring the Tube network to a near standstill with severely reduced services operating on all lines.
ASLEF organiser, Finn Brennan, said: "There are four key issues in the dispute - reducing weekend working; giving drivers the option to reduce the numbers of shifts they work on a pro-rata basis; the option of four-day week rosters for those who want to volunteer for them; and improving career development and promotional opportunities."
He added: "If management are genuine about finding a resolution, then they should acknowledge what the real issues are and work with us to solve them."
Commuters won't be the only one affected by the Tube strike as thousands of football fans heading to see England play Slovenia at Wembley on Thursday will also have their journeys disrupted.
Nigel Holness, director of network operations for London Underground, said: "We are committed to ensuring that our employees are able to maintain a good balance between their work and personal lives and we have been working closely with the unions on new ways to achieve this.
He added: "I encourage the ASLEF leadership to continue working with us constructively rather than moving towards unnecessary strike action. "
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