In 1941, Habibur Rahman became a founding member of the Assam Provincial Muslim Students Federation. He was an active member of the Federation until 1945. He started a law business at the Sylhet District Bar in 1946. He was the first lawyer and member of the Sylhet Bar in the
Jaintia constituency. At the
1946 Indian provincial elections, he stood up as an
All-India Muslim League candidate for the Jaintia constituency. He lost to Moulvi
Ibrahim Ali Chatuli of the
Jamiat Ulema-e-Hind. In 1954, Habibur Rahman joined the
Awami League and became the president of the party's Sylhet District Committee until his death. He competed in the by-elections of 1956 but was unsuccessful once more.
Sheikh Mujibur Rahman appeared at Darbasta Bazar in
Jaintiapur to make public connections for him in the service. Habibur Rahman successfully won a seat in the
1970 Pakistani general elections but did not become a member of the
National Assembly of Pakistan due to the outbreak of the
Bangladesh Liberation War. The
Pakistan Army burnt down his residence in
Sylhet town on 26 March 1971. He subsequently left for
Shillong in
India where he assisted in organising the liberation of northern Sylhet. Following the
Surrender of Pakistan, he was elected as the administrator of
Sylhet Sadar and played a role in re-establishing law and order in Sylhet. He was finally elected to parliament from Sylhet-9 as an Awami League candidate following the
1973 Bangladeshi general elections. ==Death==