Twelve days of strikes are planned by Stagecoach staff over the company's "divide-and-rule" pay tactics.
The action, due to take place across November and into December, will disrupt bus services across the operator's
Newcastle, South Shields and Sunderland sites.
The decision to strike has been made by more than 800 drivers, engineers, cleaners, supervisors and managers at Stagecoach North East, according to union Unite.
It follows "verbal offers" by management of "a cap at two per cent for the pay year 2021 - 2022".
Employees rejected the offer, and subsequently voted 92 per cent vote in favour of strike action and 94 per cent for an overtime ban.
The 24 hour strikes will take place on 8,10,12,16 18, 20, 22, 24, 26 and 30 November and on 2 and 4 December.
Action is planned to affect Newcastle’s
Slatyford and Walkergate depots, as well as depots in South Shields, Sunderland and across Teesside.
Unite regional coordinating officer Mark Sanderson said: “Our members have overwhelmingly shown that they will not put up with management negotiating depot by depot in future.
"This has resulted in Unite members driving for Stagecoach in Newcastle being paid a higher hourly rate than those working at South Shields and Sunderland.
"Teesside drivers are paid less than all the other drivers in Stagecoach North East.
“However, this is the same company, the same managing director, the same regional pot of money, the same job.
“Other firms in the North East, such as Arriva and Go North East, have seen fit to offer more than Stagecoach’s miserly two per cent, which is made to look even more pathetic with the latest RPI inflation figure soaring to 4.9 per cent this month.
“We apologise in advance to the travelling public, who use these services, for any disruption this action will cause, but the reason for the disruption lies firmly with Stagecoach management.
"We are available for regional pay discussions with the management to resolve this dispute - the ball is very much in their court.”
Unite general secretary Sharon Graham said:
“ Nine out of ten members on an extensive ballot voted for strike action on Stagecoach’s miserable offer. The Stagecoach board should understand that Unite is ready for a relentless campaign.
“Unite members all over the UK are voting for industrial action right now over the company’s ‘penny pinching’ on pay, serving notice that the union more than ever is ready to fight to defend jobs pay and conditions.”
Stagecoach, meanwhile, has criticised the Unite for threatening to disrupt vital bus links in the North East which are a lifeline for local communities and businesses.