Yazbek worked as a secretary-interpreter in the Department of Emigration at the Beirut port. In the period between 1922 and 1924, he was one of the editors of a semi-weekly labor newspaper entitled Al-Ṣaḥafi al-Taʼih (Arabic: The Wandering Journalist) based in Zahlé, Lebanon. He published his articles using the pseudonym the Weeping Ghost. He also wrote for a journal entitled Al Marad. In October 1924, he and Fuad Shimali, a Lebanese tobacco worker, established the Lebanese People’s Party which would be renamed as Lebanese Communist Party in the 1940s. It was approved by the authorities as a legal political party on 30 April 1925. Yazbek was elected as its secretary general and resigned from his job at the port. He and others in the central committee of the party launched a weekly newspaper entitled Al-Insaniyyah (Arabic: Humanity) which was one of the early communist publications in Lebanon. Yazbek was named as its editor-in-chief. However, the paper was closed by the French authorities after publishing five issues on 17 June 1925. In the aftermath of this incident Yazbek left Lebanon for France in July 1925 and began to work for L'Humanité newspaper in Paris.
