Signal workers on London Underground have voted by 90 percent to strike.
They are fighting management’s imposition of work rosters, breaches of agreements and outsourcing.
They now plan to strike on Friday of next week and every Sunday from 14 February.
The ballot covered 750 members of the RMT union in the Signals Framework Agreement who worked for Metronet.
Management wants to force through changes that would mean more weekend and anti-social shifts. They also want to outsource station electrical call work.
Virgin is paying train managers commission on ticket sales as they do the work of striking booking office staff, the TSSA union says.
Workers in the TSSA held their third rush-hour strike from 5am on the Virgin West Coast line on Monday morning.
Virgin is drafting in managers from First Group and Arriva Cross Country to staff ticket offices and sell tickets at a dozen stations.
Managers from First Group are paid 5 percent on all ticket sales, while Arriva managers are paid 2.5 percent.
Workers are angry at plans for new booking office ticket machines, which will lead to more booking windows closing and a 10 percent cut in staff.
Gerry Doherty, the TSSA general secretary, said, “These train managers know they will earn more money by selling the dearest tickets.
“They will not encourage passengers to buy the cheapest tickets because that will mean less money.”
Maintenance workers on the Jubilee Line are to strike over pay every week for three months.
The RMT transport union members were set to strike for 24 hours from 7.29pm on Wednesday of this week and the same time on Sunday.
Then they will strike from 7.29pm every Sunday.
The workers, employed by Alstom, are angry that a big pay gap has opened up between them and other maintenance workers on the London Underground.
Other Underground workers are concerned about the safety of trains and could refuse to work.