This is a court decision which sets forth the standard for legitimate industrial action under the Trade Union and Labor Relations Adjustment Act. (English) https://library.scourt.go.kr/SCLIB_data/decision/6-51%20Supreme%20Court%20Decision%202007Du12859%20Decided%20June%2023.htm (Korean) https://glaw.scourt.go.kr/wsjo/panre/sjo100.do?saNo=2007%EB%91%9012859&bubNm=%EB%8C%80%EB%B2%95%EC%9B%90