Published Monday, 26 October 2009
The TUC, who helped end the last dispute two years ago, has stepped in to mediate.
A row over jobs, pay and modernisation led to two 24-hour walkouts last week, with more disruption threatened this week.
Staff took to picket lines last Thursday and Friday disrupting deliveries across the UK.
The CWU turned down a last minute proposal from management last week, claiming the government worked with the company to block a realistic deal.
More stoppages are planned for this week if an accommodation is not reached.
Before entering the meeting Dave Ward from the Communication Workers Union said he hoped progress could be made.
"This is fundamentally about jobs in our industry, how many jobs there is going to be going forward, what those jobs are going to be in the future and what our members terms and conditions are going to be," he said.
Mediation expert David Liddle says the fact they are talking is a good sign.
"Clearly each of the parties now wants to enter into some dialogue which is important, but what the mediation process will do and the TUC will do is help each of the parties to identify a resolution - but ultimately save face," he said.