Samsung Electronics shares fell sharply on Wednesday after negotiations between the company and its largest labour union failed to produce a wage agreement, increasing concerns over a possible large-scale strike that could disrupt operations. The stock dropped more than 5% in Seoul trading, reflecting investor worries about labour unrest at a critical time for the South Korean tech giant.
The breakdown in talks followed lengthy government-mediated negotiations with the National Samsung Electronics Union, which represents over 50,000 workers. Discussions reportedly continued into early Tuesday before ending without a deal. The union has now announced plans for an 18-day strike starting May 21 unless Samsung improves its compensation proposal, particularly regarding wages and performance bonuses.
Union members are demanding the removal of limits on bonus payouts and are seeking a larger share of profits generated from Samsung’s rapidly growing artificial intelligence chip business. Employees argue that the company’s AI-driven semiconductor success should translate into higher rewards for workers. The issue has gained attention as rival SK Hynix, a major competitor in the high-bandwidth memory (HBM) chip market, reportedly provided significantly larger bonuses to employees following strong earnings tied to AI demand.
The labour dispute comes at a sensitive time for Samsung Electronics as it races to strengthen its position in the competitive AI semiconductor market. The company has been working to narrow the gap with SK Hynix in supplying advanced memory chips used in Nvidia AI processors and other high-performance computing applications.
Samsung stated that it regretted the failure to reach an agreement but emphasized that discussions with labour representatives would continue. Investors are now closely watching whether further negotiations can prevent a strike that could impact production and add pressure to Samsung’s efforts in the global AI chip industry.


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