Ballot could lead to first Royal Mail walkout in a decade
Members of the Communication Workers Union (CWU) will vote from next week with the result declared in mid-October.
The union is in dispute over issues including threats to the universal service obligation and claims of breaches of national agreements.
Advertisement
Hide AdAdvertisement
Hide AdCWU deputy general secretary Terry Pullinger said "This union and its membership are in the fight of our lives. We face an assault on our terms, conditions and national agreements like we have never seen before.
"I am confident our members will stand with their union and deliver a massive yes vote in what is the most important dispute the union has ever had."
CWU general secretary Dave Ward added: "Our members, as always, will stand up and defend their jobs, futures and the service we provide to the people and businesses across the UK.
"Over the coming weeks we will be launching a significant media and public facing campaign and we will expose the actions of this employer."