A strike by 50,000 workers at Samsung Electronics could disrupt the global chip supply chain, triggering price fluctuations in memory and flash storage.
Samsung Electronics' 50,000-Worker Strike: The Most Dangerous Week for the Global Chip Supply Chain
In May 2025, partial production line shutdowns occurred simultaneously at Samsung Electronics' three core semiconductor factories in Pyeongtaek, Hwaseong, and Giheung, South Korea. More than 50,000 Samsung Electronics union workers declared an "indefinite general strike," demanding wage increases and improved benefits.
This news reached No. 10 on Zhihu's hot list, with 2.2 million views. But for those who truly understand the industry, that level of attention is nowhere near enough — because the ripple effects of this strike could raise the price of every chip, from iPhones to H100s.
This is not an ordinary labor dispute. It is a depth charge aimed directly at the global chip supply chain.
Just how important is Samsung?
Samsung Electronics' position in the global semiconductor industry can be summed up in one sentence: it is the central water valve of the entire memory chip world.
~70%
Global DRAM market share
~35%
Global NAND flash market share
What do these two numbers mean?
DRAM (Dynamic Random Access Memory) is a core component essential to every computer, server, and smartphone. For every 10 DRAM chips sold globally, roughly 7 come from Samsung. If Samsung's DRAM production lines cut output due to the strike, global memory prices will start jumping within a week.
NAND flash, meanwhile, is the storage backbone for everything from your phone and solid-state drives to data center SSDs. Samsung accounts for more than one-third of global capacity, forming the supply landscape alongside SK Hynix, Kioxia, Micron, and YMTC. If Samsung halts, the entire NAND supply-demand balance will be broken.
In fact, in Q4 2024, Samsung already claimed the No. 1 spot in global semiconductor revenue, surpassing TSMC. It is not only South Korea's largest company, but also the single point of failure in the global semiconductor industry — no other company can quickly replace its 50,000-worker production capacity.
Where does the leverage for this strike come from?
To understand how this strike could mobilize 50,000 workers, you need context: the National Samsung Electronics Union (NSEU) is currently the most aggressive labor organization inside Samsung, with more than 30,000 official members (2024 data). Adding non-members who joined the strike, the total could reach 50,000 or more.
The union's core demands are as follows:
Wage increases: Demand for an overall salary increase of no less than 8% in 2025 (the company's previously proposed increase was in the 4-5% range)
Bonus transparency: Demand for greater transparency in performance reviews and bonus distribution
Benefit improvements: More paid leave and optimized overtime compensation plans
Samsung Electronics generated more than 270 trillion Korean won (approximately $200 billion) in revenue in 2024, with the semiconductor division contributing the largest share of profit. The union's logic is simple — if the company is making this much money, why won't it share it with the workers?
Moreover, the timing of this strike is remarkably strategic: 2025 marks the peak of the global AI arms race. HBM high-bandwidth memory (the core companion component for AI chips) relies heavily on Samsung and SK Hynix capacity. Samsung's HBM3E products are in the critical phase of capacity ramp-up and customer qualification — a production halt doesn't just cost DRAM revenue; it jeopardizes the company's ticket into the AI era.
This is the union's biggest bargaining chip: You can't afford to stay idle for long, because your competitors are waiting.
Even the U.S. can't help Samsung
At this point, it's worth mentioning a starkly contrasting story — Samsung's factory in Texas.
In 2021, the U.S. passed the CHIPS and Science Act, committing roughly $52 billion in subsidies for domestic semiconductor manufacturing. Samsung was one of the most enthusiastic responders, announcing a $17 billion investment in an advanced process wafer fab in Taylor, Texas.
By 2024, Samsung had increased its investment in the Taylor plant to approximately $44 billion, making it one of the largest foreign direct investment projects in U.S. history. The U.S. Department of Commerce also committed up to $6.4 billion in direct subsidies.
However, this highly anticipated plant has yet to begin mass production. Construction delays, labor shortages, cost overruns, and technical route adjustments — one problem after another has slowed progress. The plant originally slated for production in 2024 has now pushed its target to 2026.
In other words: even after the U.S. poured in tens of billions of dollars and $6.4 billion in subsidies, it still cannot create a short-term replacement for Samsung's domestic capacity.
The global chip supply chain has not become safer because of America's geopolitical efforts. When 50,000 workers at Samsung's domestic South Korean plants go on strike, TSMC in Taiwan cannot rescue memory chips, and the Texas plant cannot save DRAM and specialty memory.
Samsung's crisis is also China's memory opportunity
For China's semiconductor industry, this strike carries a very different meaning.
YMTC (Yangtze Memory Technologies Co.), the flagship of China's NAND flash sector, has been accelerating its capacity ramp-up in recent years. After being blocked by U.S. export controls in 2022-2023, YMTC achieved key breakthroughs through its self-developed Xtacking architecture. In 2024, its 232-layer 3D NAND technology entered mass production, with capacity steadily increasing.
But YMTC's global share remains small, estimated at under 5%. It still has a long way to go before it can truly challenge Samsung's NAND capacity.
That said, the supply gap and price increases caused by the Samsung strike have opened an unexpected window of opportunity for YMTC —
Pricing advantage: When global NAND prices rise, YMTC faces less pricing pressure
Customer switching: OEMs and module makers worried about Samsung's supply stability will accelerate qualification of YMTC as a second source
Talent opportunity: Turmoil at Samsung's South Korean headquarters could accelerate the flow of South Korean semiconductor talent to China
But there is also the other side of the coin: once the strike ends and production recovers, Samsung's NAND economies of scale will once again crush YMTC's cost-performance advantage. The window is limited — the key question is how much capacity YMTC and the broader Chinese memory industry can ramp up during this year.
Who will take the real hit?
Let's walk through how this row of dominoes falls —
Timeline
Chain reaction
Affected parties
Weeks 1-2
DRAM spot prices jump 5-10%
Memory module makers, memory distributors
Weeks 3-4
Server OEMs begin warning of delivery delays
Cloud providers (AWS, Azure, Google Cloud)
Months 1-2
HBM supply tightens further
NVIDIA and AMD AI GPU shipments
Months 2-3
Costs pass through to consumer electronics (phones, PCs)
Apple, Xiaomi, Lenovo, and other device brands
3+ months
Global electronics price hike cycle begins
End consumers
In the short term, South Korea itself takes the hardest hit. Samsung Electronics is the backbone of the South Korean economy, accounting for approximately 20% of the country's GDP. A strike by 50,000 workers not only affects chip output but also drags down the nation's overall export figures. South Korea's Ministry of Trade, Industry and Energy is already closely monitoring the situation, and government-mediated intervention cannot be ruled out.
In the medium term, NVIDIA's AI GPU shipments could come under pressure. HBM3E is a critical companion component for AI chips like the H100 and B200. Samsung is one of the two major HBM suppliers (alongside SK Hynix). If the strike affects HBM capacity ramp-up, NVIDIA's delivery schedule could be disrupted, in turn impacting the pace of global AI infrastructure buildout.
In the long term, this strike could accelerate efforts by global tech giants to reduce their dependence on Samsung in the supply chain. Apple is already evaluating increasing its memory procurement from SK Hynix and Micron; Chinese mainland phone makers are also accelerating the adoption of domestic memory solutions. If Samsung cannot quickly stop the bleeding on the labor front, its "too big to fail" myth could develop cracks at the customer level.
Will Samsung compromise?
That depends on one question: How long can the strike last?
Let's model the decision space for Samsung management —
Hawkish option: Hold the line, refuse to negotiate. Use non-union workers to maintain minimum capacity and wait for the strikers to break from within. The risk is core customer attrition if the strike drags on.
Dovish option: Accept most of the union's demands and resume production quickly. The cost is a significant rise in labor costs, balancing the company's compensation structure against global competitiveness.
Middle-ground option: Make partial concessions, introduce a phased wage increase plan, and bring in external arbitration.
Historically, Samsung has tended toward a hardline stance in labor relations. Through multiple large-scale labor conflicts in the 1990s and 2010s, Samsung chose to hold firm. But this time is different — there are more competitors than ever, technology inflection points are arriving faster than ever, and the cost of the strike is higher than ever.
Our lean is that Samsung will ultimately choose the middle-ground option and reach an agreement within 2-4 weeks. Because once a 50,000-worker strike drags past the third week, the lost revenue will exceed the cost of meeting the union's demands. Rational management would never let the logic of "saving money" override the logic of "making money."
But during those 2-4 weeks, the global chip supply chain will already have absorbed a violent shock.
Final thoughts
Samsung Electronics' 50,000-worker strike — casual news readers see "South Koreans are striking again," while industry insiders see the global chip supply chain's "9/11 moment."
This event exposes a truth obscured by geopolitical narratives: the risk in the chip supply chain is not just U.S.-China competition, the Taiwan Strait crisis, or export controls — it's also 50,000 living, breathing South Korean workers who can go on strike and take to the streets for higher pay.
They are not pawns on a geopolitical chessboard. They are real people. And when real people choose not to work, the gears of the entire electronics world start grinding with a jarring noise.
As for that 2.2 million views on Zhihu — honestly, that's far too low. When your phone, graphics card, and SSD quietly go up in price over the next two months, you'll remember this article.
By then, the strike may already be over. But its aftershocks will last an entire year.
— End —
Note: Market share figures in this article are approximate values compiled from industry research firms TrendForce, Omdia, and Samsung Electronics' public financial disclosures. For the latest figures, please refer to each organization's most recent reports.