Hundreds of workers have been laid off in Norway amid strike action by Industri Energi.
The staff made redundant are from Baker Hughes, Schlumberger and Halliburton.
According to reports, the majority of the employees who have lost their jobs are from Baker Hughes.
Strike action has been ongoing in Norway since last week.
The companies involved are alleged to have claimed there is simply not enough work for staff as drilling operations have been halted because of the strike.
Industri Energi said pressure was being put on the workers through job cuts to give up on strike action.
Since the industrial action began there have been no discussions between the companies or unions.