Unionized workers at Kakao, the operator of the KakaoTalk messenger service, take a one-day “Log-out Day” in a second collective action over prolonged wage negotiations. The walkout involves employees taking leave and effectively signing out of Kakao’s internal work systems for the day, which the union describes as a form of strike. The labor union and related reports say the action includes workers from Kakao and multiple affiliates, including Kakao Pay, Kakao Enterprise, and other units. Estimates of participation differ: one report cites about 2,100 workers, while Kakao management estimates around 800. The action follows stalled wage talks between Kakao’s labor union and management that have been unresolved since May, after the two sides fail to narrow disagreements over performance-based incentives. The union says it wants bonuses equivalent to about 13% to 14% of operating profit, while management rejects the demand, saying it would place too much burden on the company. Kakao management says negotiations will continue and it is prepared to maintain stable service operations. The union previously staged the company’s first-ever strike on June 10, when around 1,500 workers participated in a four-hour walkout.