Al Muammar started his career as a translator at the royal court of
King Abdulaziz in 1948. In 1953 a labor strike emerged at
Aramco, and King Saud asked Al Muammar to head a committee to review the Aramco workers' demands and to develop suggestions to improve their working conditions. In order to carry out his mission he went to the
Eastern Province where Aramco was based. There he met some leftist figures such as Ishaq Al Sheikh Yaqub and Muhammad Al Hoshan with whom he established a leftist nationalist organization called the National Reform Front (Jabhat al-Islah al-Watani). Al Muammar presented his suggestions after his visit to King Saud who founded the Work and Workers' Office following these suggestions. The office was a neutral body commissioned with protecting the rights of Aramco workers, and
Al Muammar was appointed by King Saud as the first president of the office despite the objections of Aramco management. Al Muammar was arrested in 1955 while he was working at the
Ministry of Finance due to his alleged
Baathist views. His arrest was requested by
Crown Prince Faisal based on the allegations fabricated against him by Aramco officials. He was released from prison in February 1956 and continued his political activism in the National Reform Front. Al Muammar was named as an advisor of King Saud in 1958 and became one of his closest advisors.{{cite book|author=Kai Bird ==Arrest and death==