Here is some good news for native English teachers:
The top court has ruled that native English teachers working at private language institutes here are eligible for severance pay and annual vacation allowance according to the Labor Standards Act.
Korea Times
The Supreme Court on Tuesday upheld an appellate court’s decision to recognize native English instructors as employees protected by the law and thus provide them various allowances.
But the court sent the case back to the Seoul High Court to amend the calculation of such payment.
The lawsuit started in 2015 when eight English teachers sued their language institute demanding unpaid severance pay and allowances in lieu of annual vacation.
You can read more at the link.