Crown Post Office workers are feeling confident after striking for a sixth time last week.
A senior CWU union rep in north west London told Socialist Worker that action over pay and office closures is hitting management hard.
The union has organised a series of half-day strikes since Easter.
It hopes that limiting action to a few hours at a time will help hundreds of part time workers take part.
“We shut a record 171 out of 323 offices last week and members are feeling very confident,” said the rep.
Management are finding it hard to keep striking offices open. Rumours are circulating that they are looking for a deal.
“The trouble is that the government is standing behind them insisting they don’t settle,” said the union rep.
“And management fear that if they disobey, ministers will sack them.”
The CWU is urging supporters to help organise meetings and lobbies of MPs—and bring solidarity to picket lines.
Workers plan a further walkout on Saturday of this week.
“We beat Post Office bosses with a similar strategy in 2007,” said the rep. “I think we’re going to do it again.”