TLDR
- Worker protest during overnight shift resulted in a 58% decline in foundry chip production and an 18% decrease in memory chip manufacturing
- Union members are pushing for performance bonuses equivalent to 15% of operating profit with elimination of existing bonus caps
- Workers have set a May 21-June 7 deadline for a potential general strike if negotiations fail
- Extended strike action spanning 18 days could disrupt global DRAM supply by 3-4% and NAND supply by 2-3%
- Shares dropped 2.23% to close at 219,500 won; KOSPI index remained essentially unchanged
A mounting labor dispute at Samsung Electronics is creating ripples across the semiconductor industry as union workers escalate their compensation demands.
Approximately 40,000 union members gathered at Samsung’s Pyeongtaek facility on April 23, deliberately absenting themselves from the overnight work period between 10 p.m. Thursday and 6 a.m. Friday. The coordinated action resulted in foundry chip manufacturing plunging 58% while memory chip production decreased 18% during that single shift.
Samsung has not issued an official statement regarding the situation.
The labor organization — which recently achieved majority representation status for the first time in company history — is insisting that workers receive performance bonuses calculated at 15% of operating profit. Additionally, the union wants complete removal of the current bonus ceiling structure.
Should management fail to reach a compromise, union leadership has announced plans for a comprehensive general strike scheduled from May 21 through June 7.
What a Strike Could Mean for Supply
Industry analysts are monitoring developments with heightened interest. According to KB Investment & Securities research director Kim Dong-won, the potential work stoppage “will serve as a key variable that deepens supply shortages” considering the already constrained memory market environment.
Samsung commands a 36% share of the global DRAM market and controls 32% of NAND flash production. An extended strike at the company’s Pyeongtaek and Hwaseong manufacturing sites could decrease worldwide DRAM availability by 3-4% and reduce NAND supply 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 operations.
Worker participation rates represent a critical factor. During the July 2024 work stoppage, approximately 15% of union members participated, which limited overall market impact. Current analyst predictions suggest 30,000 to 40,000 members — representing roughly 30-40% of total union membership — would join if strike action proceeds.
Shareholder Pushback
The union’s demands have not received universal support. Fulfilling the compensation requirements would necessitate approximately 45 trillion won ($32 billion) in bonus disbursements, creating concerns about potential reductions in capital expenditure for facilities and research and development.
Representatives from the Korea Shareholders’ Movement Headquarters organized a counter-demonstration near the union gathering location, contending that meeting these demands could directly erode shareholder value during what should be a profitable semiconductor market cycle.
Despite these concerns, the prevailing analyst perspective suggests earnings projections will likely remain stable even if a strike materializes. An unnamed analyst from a prominent securities firm indicated the primary risk involves investor confidence and near-term supply-demand dynamics rather than fundamental 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 concluded trading at 219,500 won on April 24, representing a 2.23% decline for the session. The KOSPI index finished at 6,475.63, slipping just 0.18 points.



