He also worked as the managing partner of Janata Press and secretary, the Textile Labour Mills Union, Delhi.
One case, namely Har Sharan Verma vs Tribhuvan Narain Singh was decided by a constitutional bench of the Supreme Court in 1971.
Tribhuvan Narain Singh hence, became the first Chief Minister to be appointed without being a member of either house of the state legislature.
Ram Prakash Gupta is only the second person to become chief minister of Uttar Pradesh after Tribhuvan Narain Singh (in October 1970) without being a member of either house of the state legislature.
He had to resign from the post of Chief Minister when he lost the bypolls from where he contested, thus bringing his short tenure to an end.
[4] Tribhuvan Narain Singh worked in Tehsil and District Congress Committee, Banaras.
[5] Tribhuvan Narayan Singh was elected as member of parliament from Chandauli Lok Sabha constituency in 1952 & 1957.
In second general elections held in 1957 famous socialist leader Ram Manohar Lohia contested against him as an Independent candidate but could not succeed.