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Korea's national railway workers' union (전국철도노동조합) announced Wednesday it will launch an indefinite general strike at 9 a.m. on Dec. 10, demanding a fair promotion system and more railway safety personnel, Yonhap and other outlets report. The union held a press conference at Seoul Station Plaza on Nov. 11, warning it will walk out if demands are not met. The strike threat comes amid a wave of public-sector labor actions: Seoul Metro's largest union has threatened a Nov. 25 strike over wages and hiring, and airport railroad and school non-regular workers have also announced strikes, Kyunghyang Shinmun reports. Korean media are covering the announcement as breaking news, with multiple outlets publishing flash alerts on the union's Dec. 10 plan.