He was appointed principal of the government law college in Bombay (1935) where he continued for three years. He formed the ‘Independent Labor Party’ for the untouchables, the landless and the unemployed.  His party contested for 17 seats in the Provisional Assembly for Bombay and won 15 seats. And as a member of the legislature, he was elected to the Viceroy’s Executive Council (1942) where he continued for four years. He formed a new party called the All-India Federation for the Scheduled Castes, but this party lost thoroughly in the next elections. So he formed an organization called ‘People’s Educational Society’ and started colleges in Bombay and Aurangabad. He wrote a book supporting Jinnah’s stand for the partition of India and the formation of and independent Pakistan.

When India was free in August Ambedkar was invited to be the Law Minister in the first ministry of India under the Prime Ministership of Jawaharlal Nehru. And he accepted the position and was appointed the chairman of the drafting committee for a new constitution for independent India. He married Dr. Sarada Kabir in 1948.