Over 250 postal workers in Scotland struck last weekend over changes to working practices.
Postal workers in the CWU union at delivery offices in Dunfermline, Grangemouth, Alloa and Cowdenbeath took industrial action from Saturday morning until Sunday night.
The action was in direct response to changes to mail sorting speeds and delivery times.
The union also said that Royal Mail bosses were refusing to discuss the changes at a national level and instead were imposing them without consultation.
Eight voluntary redundancies were taken in Dunfermline after changes were implemented that involves delivery duties being equalised into three and a half hour spans.
Mark Newton, the CWU area delivery rep for Fife and Central said, “Taking these people out of Dunfermline only makes the service worse for the public.
“We are going on strike due to unnecessary revision of our sorting and delivery system.”
Meanwhile a further 40 postal workers in Cardiff have also walked out in an unofficial dispute over changes concerning mail sorting that they say breach health and safety rules.
Workers in London are also expected to vote in favour of industrial action this month over changes to working practices. There is pressure building for national action.
According to CWU deputy general secretary Dave Ward, “The Union has no option other than to once again draw a line in the sand.
“Everybody must now recognise that unless Royal Mail completely changes their current approach, then we face the real prospect of a national industrial action ballot in the near future.”