Thousands of Samsung Electronics workers rallied at its computer chip complex in Pyeongtaek, South Korea, on Thursday, demanding higher bonuses and threatening to strike as booming demand for artificial intelligence drives up memory-chip profits.
Amid a heavy police presence, employees held signs and waved banners, shouting, "make compensation transparent and remove maximum limits on bonuses!"
Union officials claimed approximately 40,000 members participated, though police did not immediately provide a crowd estimate.
The rally occurred hours after Samsung’s rival, SK Hynix, posted an all-time high in quarterly revenue and operating profit for the January-March period.
This surge was attributed to expanding global investments in data centres and other AI infrastructure, significantly boosting demand for its memory chips.
Samsung, which alongside SK Hynix produces about two-thirds of global memory chips, forecast earlier this month that its first-quarter operating profit would reach a record 57.2 trillion won ($38.6 billion).

This figure surpasses the 37.6 trillion won ($25.4 billion) posted by SK Hynix on Thursday, although Samsung maintains a more diverse business lineup, including smartphones and consumer electronics.
Samsung’s union, which represents about 74,000 workers, says the company has failed to offer adequate compensation despite its strong performance. It has rejected the management’s proposal for bonuses of restricted stock and calling for removing caps on bonuses.
The union has threatened to stage an 18-day walkout starting 21 May if negotiations with management fail and claims that such action would cost the company more than 1 trillion won ($676 million) a day.

“We won’t stop this fight until our fair demands are met,” Choi Seung-ho, a union leader, said through a loudspeaker from atop a crane-mounted structure.
While semiconductor makers have benefited from the AI boom, the war in the Middle East has clouded the future outlook, disrupting supplies of key materials such as helium that are crucial to chipmaking and pushing up energy costs.
In a conference call Thursday, Woo Hyun Kim, SK Hynix’s chief financial officer, said the company is closely monitoring the conflict but does not expect a meaningful impact on production, saying it has been diversifying its sourcing of helium and bromine beyond the Middle East and has sufficient inventory.