Trade union groups and labour activists shout slogans during a Labour Day rally calling for improved working conditions and rights in Seoul on May 1, 2026. (Photo by Jung Yeon-je / AFP via Getty Images)

Trade union groups and labour activists carry flags during a Labour Day rally calling for improved working conditions and rights in Seoul on May 1, 2026. (Photo by Jung Yeon-je / AFP via Getty Images)

Trade union groups and labour activists shout slogans during a Labour Day rally calling for improved working conditions and rights in Seoul on May 1, 2026. (Photo by Jung Yeon-je / AFP via Getty Images)

Trade union groups and labour activists carry flags during a Labour Day rally calling for improved working conditions and rights in Seoul on May 1, 2026. (Photo by Jung Yeon-je / AFP via Getty Images)

Trade union groups and labour activists shout slogans during a Labour Day rally calling for improved working conditions and rights in Seoul on May 1, 2026. (Photo by Jung Yeon-je / AFP via Getty Images)

Trade union groups and labour activists shout slogans during a Labour Day rally calling for improved working conditions and rights in Seoul on May 1, 2026. (Photo by Jung Yeon-je / AFP via Getty Images)

Trade union groups and labour activists carry flags during a Labour Day rally calling for improved working conditions and rights in Seoul on May 1, 2026. (Photo by Jung Yeon-je / AFP via Getty Images)

Trade union groups and labour activists shout slogans during a Labour Day rally calling for improved working conditions and rights in Seoul on May 1, 2026. (Photo by Jung Yeon-je / AFP via Getty Images)