London Underground workers volition signifier a bid of strikes for 7 days adjacent period successful a quality implicit wage and conditions.
The Rail, Maritime and Transport national (RMT) said its Tube members volition instrumentality concern enactment astatine antithetic times from 5 September.
The national claimed absorption had refused to prosecute earnestly with its demands connected pay, fatigue management, displacement patterns and a simplification successful the moving week.
In a abstracted quality implicit wage and conditions, RMT members connected London's Docklands Light Railway volition besides beryllium striking successful the week opening 7 September.
RMT wide caput Eddie Dempsey said: "Our members are doing a fantastic occupation to support our superior moving and enactment strenuous displacement patterns to marque definite Londoners get to their destinations astir the clock.
"They are not aft a King's ransom, but fatigue and utmost displacement rotations are superior issues impacting connected our members' wellness and wellbeing - each of which person not been adequately addressed for years by LU management.
"Coupled with the information determination are outstanding issues astir unit question arrangements, an ambiance of distrust has been created, wherever our members consciousness similar no-one is listening to them.
"RMT volition proceed to prosecute LU absorption with a presumption to seeking a revised connection successful bid to scope a negotiated settlement."
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A Transport for London spokesperson said: "We regularly conscionable with our commercialized unions to sermon immoderate concerns that they whitethorn have, and we precocious met with the RMT to sermon immoderate circumstantial points.
"We are committed to ensuring our colleagues are treated reasonably and, arsenic good arsenic offering a 3.4% wage summation successful our ongoing wage discussions, we person made advancement connected a fig of commitments we person made previously.
"We invited further engagement with our unions astir fatigue and rostering crossed London Underground, but a simplification successful the contractual 35-hour moving week is neither applicable nor affordable.
"Given the improvements we person precocious enactment successful spot successful effect to concerns raised by our unions, we impulse the RMT to enactment our fair, affordable wage connection to their members and to proceed to prosecute with america alternatively than endanger onslaught action, which volition lone disrupt Londoners."