A group of specialist engineers employed at a Rolls-Royce aero engine plant in East Lancashire will launch a campaign of industrial action on Monday after fears for the long-term future of the site resurfaced.
Members of Unite at the site in Barnoldswick went on strike before Christmas in opposition to plans to scale back production at the factory.
Unite said a deal was agreed guaranteeing the future of the factory, but fresh fears have emerged.
Unite regional officer Ross Quinn said: “Our members have been forced to take strike action as the long-term viability of Barnoldswick is once again under threat.
“Our members at Barnoldswick are rightly concerned for their futures.
“They did not take part in nine weeks of strike action for the employer to go back to their original plan in two years’ time.
“All Unite is seeking is strict guarantees that the January agreement is fully honoured by Rolls-Royce.”