The union has been locked in a long-running dispute with the Aberdeen-based OCA – the umbrella body for offshore contractors – over pay and conditions.
In a consultative ballot, 61 per cent of GMB members voted to reject the latest deal put forward by their employers, represented by the OCA. This is the second pay offer rejected by members.
Meanwhile, another trade union involved in the pay – Unite – announced that 81% of those who took part in a similar consultative ballot turned down the offer.
The unions will now consult about the next step to be taken.
Dave Hulse, GMB National Officer, said: “This result comes as little surprise given the attacks our members have faced on their pay, terms and conditions in recent years. The offer the employers have made is just not up to scratch.”
“Our members believe that over recent times they have been treated with contempt – enough is enough.”
Paul Atkinson, Chief Executive of the Offshore Contractors Association commented: “We are extremely disappointed that members of the trade unions who took part in the consultative ballot have rejected our pay offer.
“Our priority is to find ways of avoiding industrial action. We will continue to maintain an on-going dialogue with union officials in an attempt to bring this to a resolution.”