North Sea workers have rejected a pay offer from the Offshore Contractors’ Association (OCA).
Following a consultative ballot, members of Unite and the RMT unions have turned down an offer from the group, which represents several employers including Petrofac and Aker Offshore.
Union officials did not specify which parts of the deal were unacceptable to workers, saying the terms are “confidential”.
Previous years have seen the unions seek improved pay and conditions.
Tommy Campbell regional officer with Unite said: “Our members have rejected the offer. We will be in touch with the OCA for further talks in the coming weeks.”
Jake Molloy, regional organiser of RMT, said: “We will be looking for an urgent meeting to discuss the outcome of the ballot and see how we can move it forward.”
A spokesman for the OCA said: “We are disappointed with the ballot results but will, of course, keep working with the unions to achieve a viable settlement.”
Last year workers accepted a revised contract offer from the OCA, ending protracted talks which almost led to a strike.
Workers had been seeking better terms and conditions and had rejected a 2% increase to wages.