He started his career with a government job in 1914, and found employment as a Deputy Magistrate. The following year, he became a lawyer at the Judge Court in
Krishnanagar, Nadia. Not long after, he was appointed as the Public Prosecutor of the District of Nadia. In 1926, he became the vice-chairman of the Nadia District Board. In 1928, he was made a fellow of the University of Calcutta and member of the Dacca University Court. He published an article titled
A Plea for Separate Electorate in Bengal in protest to the
Nehru Report of 1931. In the same year, he was nominated as a member of the Indian Franchise Commission. He became a member of the Bengal Banking Enquiry Commission, Bengal Retrenchment Committee and Bengal Board of Economic Enquiry in 1932. Haque has also been a part of the Railway Advisory Committee and worked with the Public Accounts Committee of the
Bengal Legislative Council. He later became the vice-president of the Bengal Board of Industries. In 1933, Haque became the chairman of the
Krishnanagar Municipality. He left the District Board in 1934, as he had then become a member of the Bengal Legislative Council and the Minister of Education in Bengal. It was Haque that was the first to introduce Free Universal Primary Education Bill. Among his other activities were the establishment of new schools, and better administration of schools in both urban and rural areas. He was also responsible for the registration and
waqf as a minister, as well as distribution of food. He also played a role in changing the medium of education from only English to Bengali. Following the 1937 legislative elections, Haque became a member of the
Bengal Legislative Assembly, and also served as its Speaker for the first five years. Haque became the second Muslim to be appointed as the
Vice-Chancellor of the
University of Calcutta in 1938. He was appointed again in 1940, thus serving as vice-chancellor for two terms, ending in 1942. His contributions included the introduction of a new
Islamic studies curriculum and the establishment of the School of Islamic History and Culture. Haque worked with the Kamal Yar Jung Education Committee, and began researching about issues pertaining to Muslim education across the British Raj from 1939 to 1941. His report presented a comprehensive educational plan that would support the cultures of the Muslims. He was appointed as the
High Commissioner of India to the United Kingdom in December 1941. He returned to Bengal in May 1943 and became a member of the Governor-General's Executive Council, first under
Lord Linlithgow and then under
Lord Wavell. He was responsible for the departments of commerce, industries, civil supplies and food. He was later given the responsibility of the textiles office of the supplies department. ==Awards and recognition==