Bakerloo line staff will take part in two 24-hour walkouts later this month after claiming they are under “intolerable” levels of stress.
The first strike will be from midday on 21 February with the second one following on 23 February during Monday rush hour.
This has been done to cause maximum disruption to the line which runs between Elephant & Castle via Oxford Circus to Stanmore.
Rail, Maritime and Transport union (RMT) general secretary Mick Cash said: “Drivers voted overwhelmingly for action in this dispute, which is all about the management imposing timetable changes on the Bakerloo line without any serious recognition of the stress impact on the operators expected to implement them.”
In addition, train drivers from rival union Aslef could also choose to strike which will add to the disruption.
The union say the new timetable changes are “unworkable” which puts their drivers under “intolerable levels of personal stress”.
It has refused to rule over further strikes if the dispute is not settled. In a ballot driver members voted 95 per cent for action.
As a result, members of the union will strike for 24 hours from midday on Friday 21 February and again from midday on Sunday 23 February, hitting the busy Monday morning rush-hour.