What Samsung Union Workers Demand and How a Strike Might Play Out
By Reuters | 19 May, 2026

Nearly 48,000 workers threatening to walk off production lines on Thursday for 18 days over a dispute about bonus payouts in what could be Samsung's worst strike ever.

South Korean memory chip maker Samsung Electronics is facing its worst-ever strike, with nearly 48,000 workers threatening to walk off production lines on Thursday for 18 days over a dispute about bonus payouts.

Here are key things to know:

WHAT DOES SAMSUNG'S UNION WANT?

Samsung's union has asked the company to abolish a cap that limits bonuses to 50% of annual salaries and to allocate 15% of annual operating profit to a bonus pool that would be distributed to workers. It also wants Samsung to make the changes binding beyond this year.

Samsung made a very different offer.

Transcripts of negotiations between the union and Samsung showed that in March, Samsung cited estimates that some staff at smaller rival SK Hynix could receive bonuses equivalent to 607% of their annual salary and proposed that its memory chip workers would gain a bonus exceeding levels that SK Hynix workers receive.

Samsung also proposed bonuses of 50% to 100% for staff in its logic chip businesses.

These bonuses, however, would be a one-off payment for this year. In principle, it does not want to abolish the cap on bonuses at 50% of annual salaries.

WHAT IS DRIVING THIS?

Samsung and SK Hynix have seen profits balloon to record highs thanks to a global shortage of memory chips amid the boom in artificial intelligence. The two companies account for the majority of global memory production.

Last year, SK Hynix abolished its cap on bonus pay for 10 years, media reports said. This resulted in bonuses more than three times ​higher than those offered to Samsung workers, prompting many to jump ship for SK Hynix and sparking a surge in union membership, according to Samsung's union.

HOW MIGHT THE STRIKE PLAY OUT?

The strike promises to be far larger and more damaging than the last walkout to affect Samsung in 2024, when about 6,000 workers took part.

Samsung's union says that nearly 48,000 employees, the majority of them chip workers, have signed up to participate. That represents 38% of Samsung Electronics' domestic work force.

A court on Monday partially granted Samsung's request for an injunction, ruling that essential staffing levels at some production facilities must be maintained during any industrial action. Samsung has notified the union that this will require 7,087 workers to report for work even if the strike goes ahead.

The company's chip factories in South Korea operate 24 hours a day across three shifts in locations such as Pyeongtaek and Hwaseong.

WHY IS THIS STRIKE CAUSING SUCH CONCERN?

The strike threatens to dent the supply of memory chips at a time of severe shortages.

Samsung is the world's largest maker of DRAM chips, commanding 36% of the market as of the end of last year, according to research firm TrendForce. Memory chips, key components in laptops and smartphones, have become essential building blocks for AI data centres.

KB Securities analyst Jeff Kim has estimated that an 18-day strike could disrupt global supplies of DRAM memory by 3% to 4% and NAND memory by 2% to 3%, which would likely fuel further price increases.

South Korean government officials have also warned about the impact of a strike as Samsung accounts for nearly a quarter of Korea's exports.

An official at South Korea's central bank has said that a strike could, in a worst-case scenario, shave 0.5 percentage points off a forecast 2.0% expansion in the South Korean economy this year.

This assumes that around 30 trillion won ($19.9 billion) of chip production could be lost and that there might be an additional "few weeks" of disruption to production, the person said.

($1 = 1,505.9000 won)

(Reporting by Brenda Goh, Hyunjoo Jin, Heekyong Yang and Cynthia Kim; Editing by Edwina Gibbs)