1.South Korea's benchmark KOSPI and the tech-heavy KOSDAQ both plunged over eight percent on Monday, prompting authorities to activate a circuit breaker to temporarily suspend trading. The Korea Exchange said it was halting trading on the KOSPI for 20 minutes starting at 2:14 p.m.

2.The opposition-controlled National Assembly on Monday passed the revision to the Trade Union and Labor Relations Adjustment Act, better known as the "yellow envelope bill.” Lawmakers of the ruling People Power Party left the plenary session in protest.

3.According to the Korea Disease Control and Prevention Agency and fire authorities on Monday, five South Koreans died of heat-related deaths over the weekend. An intense heat wave has been gripping the nation since late last month, and is forecast to continue for at least another 10 days.