26 appeals filed with National Labor Relations Commission as of Wednesday
Major conglomerates including Hanwha Ocean and CJ Logistics among petitioners
Hearing schedule runs from Monday through June 24 and beyond
Final court rulings could take years, raising fears of a strike-prone summer
![Participants hold placards at a rally of 10,000 Korean Metal Workers' Union officials near Gwanghwamun Square in Jongno-gu, Seoul, on Wednesday. [Yonhap]](https://wimg.heraldcorp.com/news/cms/2026/06/12/rcv.YNA.20260610.PYH2026061014310001300_P1.jpg)
Three months after the so-called "Yellow Envelope Law" — the amended Trade Union Act — took effect, legal disputes over whether prime contractors qualify as employers are roiling industrial worksites across the country. Appeals against initial rulings by regional labor commissions are flooding into the National Labor Relations Commission, and there are growing fears the battles will drag on for years as losing parties take their cases to the administrative courts. "The destructive power of the Yellow Envelope Law, which had been temporarily overshadowed by bonus disputes, will fully materialize this summer," a business community official said. "Corporate uncertainty and bargaining-related costs could rise exponentially."
26 appeals filed with national commission as regional rulings draw challenges
Data submitted by the National Labor Relations Commission to the office of People Power Party lawmaker Jo Ji-yeon of the Climate, Energy, Environment and Labor Committee show that <style ref="s0">26 cases had been filed with the commission as of Wednesday</style>. Seven of those were submitted this month alone. The disputes span heavy industries with high rates of in-house subcontracting — shipbuilding, energy, construction and steel — as well as parcel delivery and logistics, and even extend to public institutions and local governments.
Of the 26 total cases, 14 were filed by employers. <style ref="s0">This month alone, prime contractors including Kukdong Engineering & Construction, Hyundai Engineering, CJ Logistics and the Electronics and Telecommunications Research Institute filed appeals after rejecting initial regional rulings against them.</style> On the labor side, unions including the National Plant Construction Workers' Union and the National Parcel Delivery Workers' Union filed their own counter-appeals after having their bargaining requests dismissed at the regional level.
Key disputes involving major conglomerates are set to come before the commission in a string of hearings beginning Monday. The commission will hold a hearing Monday on Hanwha Ocean's appeal against a Korean Metal Workers' Union ruling — specifically, an objection to the confirmation notice of unions eligible for bargaining. Hanwha Ocean had earlier challenged a regional ruling ordering it to include a union representing workers at an in-house catering company on that notice. A hearing on CJ Logistics' related appeal is then scheduled for June 24, with more direct confrontations between large prime contractors expected to follow.
Disputes under amended union law explode, fueling a cascade of appeals
On the ground, conflicting rulings at the regional level have strengthened a prevailing attitude among both labor and management of "let's just take it to the national commission." The employer-status standard written into the law — whether a party can "substantially and specifically dominate or determine" working conditions — remains too vague, making it difficult for either side to accept regional decisions without a fight and accelerating what observers are calling a domino effect of appeals.
Against this backdrop, <style ref="s0">the total number of cases filed under the amended union law, including those still at the regional level, has already reached 451 as of Wednesday.</style> The largest category was "correction requests for failure to post a bargaining demand notice" — cases where a prime contractor did not publicize a subcontractor union's bargaining demand internally — at 276 cases, or 61.2 percent of the total. Applications for "separation of bargaining units" followed at 164 cases, or 36.4 percent.
Among the 384 cases already resolved, rulings that accepted the union's position — recognizing the prime contractor as an employer — numbered 97, more than double the 42 cases that were dismissed. Because regional commissions have repeatedly recognized prime contractors as employers, <style ref="s0">large conglomerates have little choice but to plan for national commission appeals and, beyond that, a wave of administrative lawsuits as a defensive strategy.</style>
Years of litigation ahead as disputes head toward the courts
The deeper problem is that even a national commission ruling is unlikely to end the conflict. Either party may file an administrative lawsuit in court within 15 days of receiving the commission's written decision. Management says it will have no choice but to sue if the commission sides with subcontractor unions, arguing that compliance would paralyze operations through unchecked bargaining demands and encroach on managerial authority. Labor, for its part, has signaled it will seek a court ruling if it fails to win employer-status recognition at either the regional or national level.
<style ref="s0">If the disputes proceed to administrative litigation, the fight could continue for years before a Supreme Court ruling brings finality.</style> The average time for a labor commission case to work through all three tiers of administrative court stood at 1,137 days last year. Once litigation begins, determining who the "real employer" is could take a minimum of several years.
Park Ji-soon, a professor at Korea University School of Law, said cases under the amended union law are unprecedented and legally complex, and that given the burden on the courts, a final Supreme Court ruling could take as long as five years. "From a prime contractor's perspective, even if it ultimately wins a ruling that it is not the employer, agreeing to bargain now under union pressure would set a precedent that hardens against it," Park said. "So companies will have little choice but to hold out to the end, even at the cost of litigation expenses."
Strike wave feared as legal battles drag on: 'Yellow Envelope Law storm is just beginning'
As the legal battles lengthen, there are concerns the situation on the ground could deteriorate into a wave of strikes. Under Article 27 of the Labor Relations Commission Act, filing an administrative lawsuit against a national commission ruling does not suspend its effect — meaning subcontractor unions could immediately demand bargaining. If prime contractors refuse, citing a pending final ruling, unions could file unfair labor practice complaints and, after going through mediation procedures, launch strikes.
Park said that because the Yellow Envelope Law significantly reduces or eliminates liability for damages from illegal industrial action, unions will be quick to play the strike card. "Even halting just one subcontracted process can paralyze the entire prime contractor's operations — a 'maximum impact at minimum cost' strike strategy," he said. "We could see a surge of such strikes this summer, sharply amplifying labor-management conflict." He added: <style ref="s0">"From June onward, as national commission outcomes from the three months since the law took effect begin to materialize, the storm unleashed by the Yellow Envelope Law will start showing its full force."</style>
keg@heraldcorp.com
