Chalmers Student Union (Chalmers Studentkår or ChS) is the student union at Chalmers University of Technology in Gothenburg, Sweden. Its primary purpose is to look after the interests of the students of the university in questions regarding the education. The student union also arranges one of Europe's largest labour market days, CHARM. The social committee of ChS, consisting of 6 members, is called FestU. It was founded in 1948. FestU's primary job is to arrange big parties for the student union members, their biggest event of the year is Valborgskalaset which is held April 30 every year.