Some 155,000 workers will go on strike after talks between Canada’s largest federal public service union and the government has broken down.
Picket lines will be set up in more than 250 locations.
The strike will include 35,000 Canada Revenue Agency workers.
Wage increases have been the main topic at the bargaining table with the union also pushing for work from home options to be written in the new collective agreement.
The strike includes nearly a third of all federal public servants.