Clerk, miner, founding member and secretary of the African Mineworkers' Union. Organizing secretary of the Orlando branch of the ANC
A clerk and ex-miner, Majoro was instrumental in establishing the African Mineworkers' Union. He later became its secretary and was one of the accused in the trial that followed the 1946 mine strike. He was an organizing secretary of the Orlando branch of the African National Congress (ANC) during the mid-1940s.