A tribunal at a Norwegian court will begin today into whether an email sent to hundreds of employees by COSL was a valid form of dismissal from the company.
In June last year, the Chinese-owned firm lost a contract with Statoil, leading to 229 positions being made redundant.
But a formal letter was sent to staff only after an initial email to employees which was then criticised by staff over whether it was a legitimate form of dismissal.
The case will be heard by Jaeren District Court.
A total of 38 employees have gone to court over the issue where it will be assessed whether or not an email can be accepted as a formal method of employment being ended.