[2] The party had a certain role in the trade union movement in West Bengal and was briefly represented in the state government in 1969.

BPI traces its roots to the Bengal Labour Party, founded in 1933 and led by Niharendu Dutt Mazumdar.

[5] He was detained for three years and joined the Indian National Congress and dissolved the Labour Party upon his release.

[3] A group led by Promode Sen, student leader of BPI, joined the Indian National Congress in 1944.

[3] In early 1944 the BPI politburo dissolved the Bengal Committee of the party and formed a 4-member secretariat for the province consisting of Barada Mukutmoni, Mani Bishnu Chaudhuri, Amar Naskar and Dinanath Gupta.

[1] It advocated breaking with the Commonwealth and instead orient India toward trade pacts with the Soviet Union, China and the people's democracies.

[12] In the 1952 Madhya Pradesh Legislative Assembly election BPI fielded 1 candidate, Waman Jangloe Bhalekar in Nagpur IV.

[15] The party joined the SUCI-led United Left Front ahead of the 1957 West Bengal Legislative Assembly election.

[18] The party was part of the CPI-led United Left Front during the 1962 West Bengal Legislative Assembly election.

[3] The conference rejected a merger and Sudha Roy and her followers left BPI to join CPI.

[3] Ahead of the 1967 West Bengal Legislative Assembly election BPI joined the CPI-led People's United Left Front.

[23] In March 1969 Barada Mukutmoni was named Minister of Tourism in the second United Front government of West Bengal.

[26][27] When CPI later withdrew from front politics in West Bengal, the Mukutmoni faction aligned with the Janata Party.

[31] As of 2011 the party claimed having state committees in Delhi, Maharashtra, Uttar Pradesh, West Bengal, Bihar and Jharkhand.