Justice Lalit practised as an Advocate in the High Court of Bombay from 1983 to 1985. He worked with former Attorney General Soli Sorabjee from 1986 to 1992. In 2004, the Supreme Court designated him as a Senior Advocate. He specialised in criminal law.
He conducted trials as CBI’s Special Public Prosecutor in all 2G matters, under the Supreme Court’s orders. He served as a member of the Supreme Court’s Legal Services Committee for two terms. In August 2014, he was appointed to the Supreme Court as a Judge.
He has recused himself from several high-profile cases. In 2014, he recused himself from hearing Yakub Menon’s plea seeking review of the Supreme Court’s order upholding his capital punishment in the 1993 Mumbai serial blasts case. In 2015, he recused himself from hearing a petition filed seeking a fair trial in the 2008 Malegaon blasts, as he had defended one of the accused earlier. In 2016, he recused himself from a plea hearing seeking a probe into the disappearance of a key prosecution witness in the trial of Asaram Bapu. He also recused himself from hearing a plea by former Haryana Chief Minister Om Prakash Chautala in the teachers’ recruitment scam case. In 2017, he recused himself from hearing the appeals in the Suryanelli rape case since he had appeared for one of accused persons earlier. In 2018, he recused himself from hearing the petition of an accused in the Malegaon blast seeking a probe into alleged torture and coercion by law enforcement authorities. In 2019, Justice Lalit recused himself from the Constitution Bench hearing the Ayodhya Title Dispute.