Ха-Поэль ха-Цаир
Kesse joined Hapoel Hatzair, and in 1932 became secretary of Rehovot Workers Council. Between 1933 and 1936 he was a member of the Kfar Bilu moshav, before joining Kvutzat Shiller in 1936. A member of the Histadrut trade union's education centre, he was also a member of the Haganah's regional command in the south of Palestine. In 1938, he became secretary of Mapai, also holding the position between 1939 and 1940, and again from 1953 until 1956.