Royal Mail unions have warned that workers could still strike before Christmas because of a lack of progress in talks aimed at resolving the dispute.
Billy Hayes, general secretary of the Communication Workers Union (CWU), has written to members saying strikes could be called within weeks because Royal Mail has refused to offer enough concessions.
Hayes said: “Unless there is sufficient evidence of a change in management’s attitude, local agreements being reached and significant progress towards a full and final agreement, then we will have no alternative other than to return to strike action before Christmas.”
The CWU letter added a “strike-free Christmas” was not part of the interim agreement, the Daily Telegraph reported.
A spokesman for Royal Mail said the company remained “absolutely committed” to the negotiations.