The action is set to take place at the end of August
Members of the NBRU at Dublin Bus have voted by over 96% in favour of industrial action, according to the union.
Bus stoppages are expected by the end of the month, unless a resolution can be found.
Drivers at the company had sought increases of up to 31% to bring them in line with wage terms secured by Luas drivers earlier this year.
They were balloted after rejecting an 8.25% pay rise recommended by the Labour Court.
NBRU General Secretary Dermot O'Leary said the ballot result has "brought the level of anger among Dublin Bus workers into sharp focus".
"To ignore such a resounding message from workers who have had to endure two cost-cutting plans, inclusive of pay cuts coupled to eight years without a pay rise, would do a disservice to both workers and passengers alike," he said.
Mr O’Leary said the National Executive Council of the NBRU will meet on Tuesday to discuss what type of industrial action its members will take.