Last Friday, in a historical verdict, the Constitutional Court of South Korea unanimously upheld the impeachment of President Park Geun-hye. This verdict was a reflection on the huge mobilisations that have brought millions of working class Koreans to the streets week after week. The Korean union movement was deeply involved in these demonstrations as it had been fighting the anti labour laws that the Park administration had enacted in the last few years. New Presidential elections are going to be held in early May. Given that workers are still under attack and that labour leaders like Han Sang Gyun are still in jail, the struggle by Korean workers is not finished.