Samsung Stock Plunges $66 Billion as Union Strike Threatens Chip Supply

(P1) Samsung Electronics Co. saw $66 billion wiped from its market value after last-ditch wage negotiations with its labor union collapsed late May 12, paving the way for a potential 18-day strike that could cripple its semiconductor output.

(P2) "The two sides had failed to narrow their differences and had waited for the government’s mediation proposal, only to see the talks regress further," Choi Seung-ho, the union leader, said in a statement.

(P3) The dispute centers on how to share the spoils of the recent AI boom. The union demanded that 15 percent of operating profit be allocated for performance bonuses, formalized in employment contracts to improve transparency. Management has held firm with an offer of 10 percent, arguing that the union's demands would undermine future investment and are too rigid compared to its performance-linked system. The stalemate contrasts with rival SK Hynix Inc., which last year agreed to a similar profit-sharing bonus structure.

(P4) The stakes for Samsung and the global economy are immense. A prolonged walkout by the more than 40,000 union members, mostly from the critical chipmaking division, could result in losses of 1 trillion won ($671 million) per day. Such a disruption threatens Samsung's position in the market and could force key clients like Nvidia Corp. to look elsewhere, creating instability across the semiconductor supply chain at a critical time for the AI industry.

Court Injunction Looms as May 21 Strike Date Nears

Samsung is not waiting passively for the strike to begin. The company has filed for an injunction with the Suwon District Court to ban the planned labor actions, with a decision expected by May 20, just a day before the strike is set to commence. The legal challenge hinges on a Korean labor law that prohibits unions from halting work necessary to protect equipment from damage. Given the delicate, continuous nature of semiconductor fabrication, Samsung argues a full-scale walkout would cause irreparable harm.

A precedent was recently set when a court partially granted a similar injunction request from affiliate Samsung Biologics. While the court did not ban the strike outright, it restricted actions during critical production phases. Industry observers expect a similar ruling for Samsung Electronics, which would not prevent a strike but could limit its scope, forcing the union into a reduced work action while essential personnel maintain the fabs.

Government Intervention Remains a High-Stakes Wildcard

A second potential intervention could come from the South Korean government itself. The labor minister has the authority to invoke an “emergency adjustment of industrial action,” a measure that can suspend a strike for 30 days if it is deemed a threat to the national economy. With semiconductors accounting for 38 percent of Korea’s total exports, a strike at the nation's flagship electronics firm clearly meets the criteria.

However, this power is a political hot potato. Invoking the emergency measure would be seen by organized labor as the state siding with management and interfering with workers' fundamental rights, potentially triggering a much wider backlash. The measure has only been used four times in the nation's history, the last being in 2005. For now, the government has limited itself to a failed mediation attempt, with its proposal reportedly maintaining the existing bonus system, which the union rejected.

This article is for informational purposes only and does not constitute investment advice.