(Image credit: Getty Images / Jung Yeon-Je) Government-mediated negotiations between Samsung Electronics and its largest labor union fell apart on Wednesday, according to Reuters , leaving just eight days before an 18-day strike that could shut down much of the world's biggest memory chip operation. The union warned that it is “no longer considering additional negotiations” until after the proposed general strike. South Korean Prime Minister Kim Min-seok responded by convening an emergency ministerial meeting, instructing officials to closely manage the situation given what his office called the potential gravity of the impact on the national economy. Samsung has offered a one-time payment for 2026 but refused to commit to permanent changes in how bonuses are calculated, according to union representative Choi Seung-ho.…