Discussions will take place this afternoon between the RMT, Transport for London and Metronet's administrators
RMT is to hold talks with Metronet, the company’s administrator and Transport for London this afternoon following the strike action.
Talks will take place at 2.30pm, following the beginning of the 72-hour strike action that started yesterday evening.
The strike involves more than 2,300 RMT members who are concerned about threats to jobs, of forced transfers and to pensions following the privateer's collapse.
It has closed two-thirds of the Tube network and affected 10 lines. Only the Jubilee and Northern lines are operating a full service, which are maintained by Tube Lines.
RMT general secretary, Bob Crow, said: "That is a positive development and we hope that Metronet and its administrator will now take our members' legitimate concerns seriously."
"Instead of shouting insults and pointing accusing fingers, all those involved should now recognise that those concerns need to be addressed.
"It is five weeks since we gave the company notice that we were balloting over the issues involved, yet there was no sense of urgency until it became clear that our members were determined to win the unequivocal guarantees we are seeking.
"Our members have shown their determination by delivering a rock-solid strike and, pending any positive outcome from today's talks, it will remain on.”