Samsung Electronics Faces 58% Drop in Foundry Output During Union Rally, Raising Strike Concerns

Samsung Electronics experienced a significant disruption in semiconductor production during the overnight shift on April 23-24, 2026, as its foundry output dropped by 58.1% and memory production declined by 18.4% amid a large-scale labor union rally.

The production decline occurred during the night shift from 10:00 p.m. On April 23 to 6:00 a.m. On April 24, coinciding with a major labor action at the company’s Pyeongtaek campus in Gyeonggi Province. Union officials reported that the work stoppage was part of ongoing negotiations over compensation and working conditions.

Production Impact Across Facilities

The most severe impact was observed in Samsung’s foundry division, where overall output plunged by 58.1%. At the Giheung plant, the S1 production line experienced the steepest decline at 74.3%, while the Hwaseong facility’s S3 line saw output fall by 67%.

Memory production also showed notable decreases across multiple facilities. At the Hwaseong campus, Line 15 output dropped by 33.1%, Line 16 by 11.3%, and Line 17 by 13.1%. The Pyeongtaek campus, which focuses on advanced semiconductor processes, recorded declines ranging from 3.2% on the P2F line to 24.6% on the P2D line.

Labor Dispute Background

The production disruption stems from a labor dispute centered on bonus compensation. Union representatives are demanding that Samsung allocate 15% of its operating profit as a worker bonus, which would amount to approximately $27 billion based on current earnings. This would translate to roughly $400,000 per semiconductor factory worker.

Union Demands and Company Response

In addition to the profit-sharing bonus request, the union is seeking a 7% base wage increase and the elimination of a 50% cap on bonus payments. Samsung has countered with a proposal for a 10% operating profit bonus, a 6.2% wage increase, and preferential mortgage loan programs for employees.

Potential Escalation and Financial Implications

Union officials have warned that if no agreement is reached, they may initiate an extended labor action lasting more than two weeks. The union estimates such a work stoppage could cost Samsung approximately 30 trillion Korean won, equivalent to over $20 billion in potential losses.

Broader Context

The production disruption occurred against the backdrop of ongoing negotiations between Samsung management and its labor union, which had previously signaled the possibility of a general strike in May 2026. The April 23-24 rally represented one of the largest coordinated labor actions at Samsung facilities in recent years, with over 40,000 participants reported by some sources.

As of the April 24 reporting, semiconductor production during daytime shifts appeared to have resumed normal operations, though the union maintained that further action remained possible depending on the outcome of ongoing negotiations.