[1][2][3] He was the fourth Muslim (After Badruddin Tyabji, Rahimtulla M. Sayani and Nawab Syed Muhammad Bahadur) to become the President of Indian National Congress.

He was called to the Bar in 1892;[2] he returned home the same year and started law practice in the Calcutta High Court.

He presided over the special session of the Indian National Congress held at Bombay, 1918, to consider the Montagu–Chelmsford Reforms Scheme.

It was his opinion, where he thought a hostile environment between Hindus and Muslims would make it impossible to achieve freedom from the British rule.

Hasan Imam was a strong advocate of social reforms, particularly the amelioration of the position of women and the depressed classes.

He was President of the Board of Trustees of the Biharee, the leading English daily of Bihar; he was also one of the founders of the succeeding Searchlight.

He died on 19 April 1933 and lies buried on the banks of river Sone in Japla, a town in Palamu district near the border of Bihar and Jharkhand.