Seoul, Aug. 24 -- The National Assembly of South Korea on Sunday passed a controversial labour bill that broadens workers' rights, Yonhap reported.

The ruling Democratic Party led the vote, pushing the "yellow envelope bill" through despite a filibuster by the main opposition People Power Party (PPP). The filibuster ended earlier in the day, and the PPP boycotted the vote, which was subsequently approved in a 183-3 vote at a plenary session.

The bill, which amends the Labour Union Act, is primarily designed to guarantee the bargaining rights of indirectly employed subcontracted workers, as per Yonhap.

The bill also prohibits companies from filing lawsuits for damages or provisional seizures against unionized workers, which many argue b...