South Korea Enforces Yellow Envelope Act, Extending Subcontracted Workers' Bargaining Rights

South Korea began enforcing a major labor reform known as the Yellow Envelope Act on the 10th, expanding the rights of subcontracted workers to bargain with their main employers. Within the first day, nine parent companies announced they would enter negotiations with subcontracted unions, a sign of broader leverage for workers outside direct employment.

The first‑day list of employers publicly signaling negotiations included Hanwha Ocean, POSCO, Coupang Logistics Services, Busan Transportation Corporation, and Hwaseong City. On the second day, Daebang Construction posted a negotiation notice, but later withdrew it. By the second day, the government had tallied six employers publicly announcing negotiations.

Labor groups report that by the 13th, subcontracted unions affiliated with the Democratic Confederation of Korean Trade Unions had requested negotiations with 90 parent employers. Among those, two construction companies publicly announced their negotiation requests. The shipbuilding sector also moved into the public‑posting phase, with HD Hyundai Heavy Industries publicly announcing a negotiation request, bringing the number of shipyards posting to two.

The Ministry of Employment and Labor previously disclosed that in the first two days after enforcement, six employers had publicly announced their negotiation demands. The ministry’s early public notices showed five employers on the first day and one on the second day. The initial public postings occurred despite a broader pool of companies that had received union requests.

Across unions and subcontracted workers, the act’s early impact is reflected in large numbers: about 98,480 workers in 453 subcontracted units had filed for negotiations, and 248 parent employers had received such requests. However, only nine parent companies had publicly posted their negotiation demands by mid‑April, underscoring a cautious approach among many employers.

The Yellow Envelope Act amends the Labor Union and Labor Relations Adjustment Act to explicitly enable subcontracted workers to bargain with main contractors and to require certain negotiations. The changes aim to clarify who is an employer in subcontracting relationships and to institutionalize a process for bargaining, with government guidance accompanying enforcement.

For U.S. readers, the significance lies in Korea’s role as a major supplier of ships, autos, batteries, and other advanced products. If subcontracted workers gain stronger bargaining power and longer negotiation timelines, project costs, procurement schedules, and contractual terms for Korean exporters and multinational partners could shift. As supply chains increasingly cross the Pacific, Korea’s labor rules can influence pricing, delivery reliability, and investment decisions by U.S. firms linked to Korean manufacturers and contractors.