Members of Hanjin Heavy Industry's shipbuilding union have announced their intention to strike following the company's plans to implement a compulsory lay off programme.
According a report by Asiasis, the workers are being forced to return their salaries under condition of sustained employment.
Union members told Asiasis that the present business plight was "simply absurd".
In December 2009, Hanjin announced that 2,500 workers were required to volunteer for resignation. Only 350 workers stepped down. The management said that it would pay out up to 15 months of salary to those who retired voluntarily.
Union members and employees said that they would "intensely oppose" the lay off scheme.