While working at the Premier Milling Company in the early 1930s, Sisulu attended night school at the Social Centre in 1933. When he was fired from Premier for organising a strike for higher wages in 1936, Sisulu worked as a distribution agent for The Bantu World, then under leadership of Social Centre alumnus Selope Thema.
While working at the Premier Milling Company in the early 1930s, Sisulu pursued further education through night classes at the Social Centre in 1933. Following his dismissal from Premier due to his involvement in a wage increase strike in 1936, Sisulu worked as an agent for The Bantu World under the guidance of Selope Thema, another Social Centre graduate.