Last-ditch talks are planned for tomorrow in a bid to avert a four-day Tube strike by London Underground drivers.
Desperate talks will take place on Friday at the conciliation service Acas in the hope of coming to a resolution.
The proposed plans have been described by the union as “a cash led move” that would “destroy the work life balance of 3,000 Tube drivers”.
Strikes are planned from noon on August 3, 5, 24 and 26.
The protests come as more people return to work following the easing of Covid restrictions.
RMT general secretary Mick Lynch said: “RMT has made serious proposals and a resolution to the dispute is available through discussion and we will be attending Friday’s talks with the intention of making progress along those lines.
“LU management need to come back to the table in the same constructive frame of mind and I trust that they will.”
Earlier this week, the union said previous talks had “failed to resolve” the issue and that its members gave a solid vote for action.
London Underground staff were told not to report for work from 12 midday on August 3 until 11.59am the following day and on three other days in the same month, it added.
There have been severe delays on the London Underground due to extreme weather and flooding across the capital in recent weeks.