A strike involving more than 47,000 Samsung Electronics workers will begin on Thursday after wage negotiations between the company and its union broke down, sending shares of the South Korean chip giant down 3%.

The union had agreed to the mediation proposal by South Korea’s National Labor Relations Commission, but it was rejected by Samsung Electronics, the union spokesperson Choi Seung-ho said in a statement Wednesday.

Choi added that Samsung had requested more time for negotiations. However, the company said on Wednesday at 11 a.m. local time that “no decision has been made,” Choi said, leading to the impasse.

“We express deep regret that the post-mediation process was terminated due to the delay in management’s decision-making,” Choi added, stating the union will still continue efforts to reach a settlement even during the strike.

The union’s walkout is likely to be limited, after a South Korean court had previously ordered that the strike not interfere with safety protection facilities or obstruct work, to prevent damage to facilities and semiconductor wafers.

The union‘s demands centered on Samsung’s performance-based bonus system. It is seeking performance bonuses equivalent to 15% of Samsung’s operating profit, the removal of bonus payout caps, and a formalized bonus structure, among other measures.

South Korean government officials, including President Lee Jae Myung and Prime Minister Kim Min-seok, had urged both sides to reach an agreement in the days leading up to the strike.

Kim had reportedly signaled that the government may use emergency measures to stop the strike if it went ahead.

Under South Korean law, the labor minister can invoke an “emergency adjustment” to suspend industrial action for 30 days if a dispute is deemed likely to harm the economy or daily life.

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