GMB Scotland’s members at the Defence Equipment & Support depot in Beith have announced two days of "unprecedented" strikes later this month.
Those working in transporting, storing and dispatching munitions across the site in North Ayrshire voted to take coordinated action on 14 and 17 July.
DE&S is an arm’s length body of the Ministry of Defence which delivers equipment and support services to the UK armed forces.
Non-craft workers at the depot voted for strike action following a dispute about retention bonuses. Managers and craft workers are in receipt of bonuses, while non-craft workers have been excluded.
GMB Scotland wrote to Defence Secretary Ben Wallace in June to call for his intervention, but received no reply.
Last month, GMB Scotland representatives met with DE&S management to seek parity between non-craft members and their craft worker counterparts. Despite these negotiations, no satisfactory resolution was reached, leading to the decision to proceed with industrial action.
GMB Scotland organiser Chris Kennedy said: “Our members deserve equal recognition and fair compensation for their invaluable contributions to DE&S and our armed forces - without them, equipment would not reach those who need it.
“We deeply regret that it has come to this point where our hardworking non-craft members have been compelled to take industrial action.
“Management have failed to respect and recognise the invaluable work our members do, this can only be achieved with a bonus scheme that is fair to all and therefore must include non-craft workers.
“The defence secretary cannot wash his hands of the matter, his intervention is essential to deliver parity, fairness and equality and bring an end the dispute.”
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