[citation needed] Indian National Congress Pays their tributes to Sahay every year on his Birth Anniversary.

Soon thereafter in 1920, Sahay jumped into the fray giving up further studies by joining the Civil Disobedience Movement at the call of Mahatma Gandhi.

In jail, he was instrumental in the escape of Jayaprakash Narayan from Hazaribagh Central jail along with his associates namely Rama Nandan Mishra, Yogendra Shukla, Suraj Narayan Singh, Sri Gulab Chand Gupta and Sri Shaligram Singh on 9 November 1942.

[4][better source needed] Earlier, when provincial autonomy was granted by the British Raj, Sahay was elected to the Bihar Legislative Assembly in 1936 and was made a parliamentary secretary in Sri Krishna Singh's ministry in 1937.

Sahay contested the first assembly elections of 1952 from Giridih and won by a handsome margin to return as the revenue minister to the Government of Bihar in Babu's cabinet.

On 19 September 1963, with the announcement of "Kamraj Plan" came the news of Binodanand Jha being taken as one of the eight Chief Ministers to look after the affairs of Congress Party.

Satyendra Narayan Sinha, the prominent Education Minister, who was decidedly second-in-command in the Binodanand Jha Cabinet announced his support for Sahay.

Sahay met with a fatal road accident on 3 June 1974 just after winning the election, on his way back to his native place Hazaribag.

His life is a superb example of how a man can attain his cherished dream by dogged determination, systematic planning and hard labour.

KB Sahay died on 3 June 1974, when his black Hindustan Ambassador BRM101 car was hit by a truck which reversed deliberately on Hazaribag – Patna Highway in Sindoor.

Sahay was responsible for setting up of several industries in the state, prominent among them are the Barauni Refinery,[6] and the Bokaro Steel Plant.

As the Chief Minister of Bihar, he gave full support for the establishment of Sainik School for Indian Armed Forces in Tilaiya.