Management and union leaders at Samsung Electronics have failed to reach a last-minute deal over wages.

Samsung Electronics and its labor union are set for what could be their final wage negotiations Monday before a planned strike, following a rare public apology

South Korea's PM warned of "unimaginable" economic damage. The union wants 15% of operating profit. Samsung has offered 10%. The deadline is May 21.

While crisis has put South Korea on edge, government threatened to order arbitration

Samsung Electronics management and its labour union resumed negotiations on Wednesday ahead of a threatened 18-day strike by nearly 48,000 workers starting Thursday.