He joined Government College after finishing his studies at Gulbarga's Nutan Vidyalaya. He studied in a law college in Gulbarga and began practising law in Justice Shivaraj Pati's courtroom. At the outset of his legal practise, Kharge took on four lawsuits for labour organisations.
Then, the labour unions were Kharge's lifeline. He gained notoriety as a leader of the Samyukta Majdoor Sangha labour organisation and an advocate for workers' rights. Mallikarjun Kharge soon advanced to the position of president of the Gulbarga City Congress Committee after joining the Indian National Congress in 1969.
According to various media reports, Kharge has a net worth of around Rs 15 crore.
The 78-year-old political veteran from Karnataka was elected to the Rajya Sabha on June 12, 2022. He was chosen to serve as the opposition's leader in the Rajya Sabha, a position he left on October 1 of 2022 to run for president of Congress.