Crown Post Office workers to strike
Hundreds of managers at larger Post Office branches are preparing to go on strike in a dispute about pay.
Unite, which represents 900 managers, warned the action would hit services at the Crown Post Offices, which are usually situated on high streets.
It said its members had not received a pay rise since June 2011 and accused the company of "dragging its feet."
Counter staff from the Communication Workers Union were also due to strike but it was called off to allow talks.
Their planned action had stemmed from a separate row over pay, jobs and plans to franchise or close more than 70 Crown offices.
Unite official Brian Scott said: "While we understand that the industrial action will cause inconvenience to the public, the ball is in the management's court - as it has been for the last 16 months - to reach a fair and equitable settlement.
"Unite is ready to have talks at anytime with the Post Office to resolve this matter, but the management has taken a very hardline stance against our members who have seen their living standards seriously eroded."
The Post Office has not commented.