Staff at Sevan Marine have agreed to a reduction in wages as the company looks to streamline costs.
Chief executive Carl Lieungh said voluntary salary reductions have been made for management from between 10% and 50%.
In a further move, staff have also accepted an across the board additional 7.5% pay cut for the rest of the year.
The company has also implemented job reduction in the past year.
The changes come as Shell announced It would be reducing its headcount by 2,200 staff globally.
The company is behind the rig designed for the Goliat FPSO.