Five officials from the tower crane branch of the construction union KCWU found themselves in custody, awaiting trial, at the end of the year. Kim Myung-uk, President of the Seoul-Gyeonggi Tower Crane Operators’ Branch of the KCWU, was arrested with four other members on 27 November 2015 accused of blackmailing a tower crane rental company (Junkeyung Tower Crane). The other four were Jeong Min-ho, Vice President, Tower Crane Operators’ Division; Lee U-seong, President, Busan-Ulsan-South Gyeongsang Tower Crane Operators’ Branch; Ko Beom-seok, Organising Manager, Seoul-Gyeonggi Tower Crane Operators’ Branch; Hwang Seong-yong, Organising Manager, Seoul-Gyeonggi Tower Crane Operators’ Branch. They were actually seeking a collective agreement.