Key Takeaways
- Foundry chip production plummeted 58% and memory chip manufacturing declined 18% during a single overnight shift as union members protested
- Workers are calling for performance bonuses equivalent to 15% of operating profit with elimination of current bonus caps
- Union has announced plans for a general strike from May 21 through June 7 without a settlement
- Extended strike action could disrupt global DRAM availability by 3-4% and NAND supply by 2-3%
- Shares closed 2.23% lower at 219,500 won; KOSPI index nearly unchanged
Samsung Electronics is facing mounting pressure from its labor organization, creating ripples across the semiconductor industry.
Approximately 40,000 union participants gathered outside Samsung’s Pyeongtaek facility on April 23, boycotting the overnight production shift spanning 10 p.m. Thursday through 6 a.m. Friday. The impact was immediate—foundry chip manufacturing decreased by 58% while memory chip production fell 18% during that single shift.
Samsung has not issued a statement regarding the situation.
The labor organization—having recently achieved majority representation status for the first time in company history—is pushing for performance bonuses calculated at 15% of operating profit. Additionally, workers want complete elimination of the current bonus cap structure.
Without reaching an agreement with company leadership, the union has announced plans for comprehensive strike action scheduled from May 21 until June 7.
Potential Supply Chain Implications
Industry observers are monitoring developments carefully. KB Investment & Securities research director Kim Dong-won noted in his assessment that the labor action “will serve as a key variable that deepens supply shortages” considering the already constrained memory chip market.
Samsung commands 36% of the worldwide DRAM market and 32% of NAND flash production. Extended disruptions at the Pyeongtaek and Hwaseong manufacturing sites could decrease global DRAM availability by 3-4% and NAND output by 2-3%, based on Kim’s projections.
Following any strike conclusion, Kim projects an additional two to three week period would be necessary to restart and stabilize automated manufacturing systems.
Participation rates are a critical factor. During the July 2024 work stoppage, approximately 15% of union members participated, minimizing market impact. Current estimates suggest 30,000 to 40,000 members—representing 30-40% of total union membership—could join if strike action proceeds.
Investor Concerns Surface
The union’s demands don’t have universal support. Fulfilling the compensation requests would necessitate roughly 45 trillion won ($32 billion) in bonus disbursements, sparking worries about potential reductions in capital expenditures and research and development funding.
Representatives from the Korea Shareholders’ Movement Headquarters organized a counter-demonstration near the union gathering location, contending the compensation demands could directly erode shareholder returns during an upswing in the semiconductor market.
The prevailing analyst perspective suggests earnings projections will likely remain stable even if strike action materializes. An unnamed analyst from a leading securities firm indicated the primary concerns are investor confidence and immediate supply-demand dynamics rather than long-term profitability.
“Unless the strike is prolonged or involves radical actions such as damage to production facilities, it has not had a fatal impact,” the analyst said.
Samsung shares finished trading at 219,500 won on April 24, declining 2.23% for the session. The KOSPI index closed at 6,475.63, slipping just 0.18 points.


