Mahato worked as a teacher, and later, got a job as a clerk in
Dhanbad before deciding to become a lawyer. He studied for the
Intermediate Certificate at P.K. Ray Memorial College. He graduated from
Ranchi College, and received a law degree from
Patna Law College. He began to practise as a lawyer in Dhanbad in 1956. He fought cases for people who were displaced because of the
Bokaro Steel Plant,
Bharat Coking Coal Limited,
Central Coalfields,
Panchet Dam,
Maithon Dam and other developments. Mahato ran for election in Jharia in 1952 but was unsuccessful. In 1971, he ran in the Dhanbad Loksabha election for the
Communist Party of India and came second. He was a member of
Vidhan Sabha and represented
Tundi from 1980 to 1985; he later represented
Sindri and
Tundi in 1990, before becoming a member of Lok Sabha and representing
Giridih in May 1991. Mahato loved Jharkhand's culture. He organised competitions to promote the folk dances of Jharkhand and participated in festivals such as Gohal Puja,
Tusu Parab,
Jitiya,
Karam Parab,
Sohrai and
Manasa Puja. He worked to promote the languages of Jharkhand, especially
Kudmali/Kurmali, the language of Kudmi Mahato and encouraged Laxmikant Mahato, the writer of
Kudmali Sahitya and Vyakran, to promote Kurmali. The writer and poet of
Khortha, Srinivas Punari, was his friend. Due to these efforts, the study of Kurmali started at
Ranchi University. Mahato advocated for education. He created the slogan "Padho and Lado". He also donated money to help establish several schools and colleges. ==Shivaji Samaj==