Workers at corrugated packaging company Smurfit Kappa in Northampton held a solid two-day walkout last week in defence of two sacked senior shop stewards.
The Unite union members also began an overtime ban.
Unite regional officer Mick Orpin said, “It can be argued that this is a direct attack on our stewards and the fabric of our union.”
He said the stewards were “instrumental” in bringing a claim over the incorrect payment of a bonus, and in resisting new contracts. These would have led to a two-tier workforce.
The outcome of a reps meeting in London, which hoped to escalate the dispute nationally, was unclear as Socialist Worker went to press.
But workers have agreed a further four days of action to include the weekend shift. They demand their reps are reinstated.