▪ Enrolled as an Advocate in July, 1977 with Bar Council of Delhi and started practicing in Delhi. Conducted cases of all types with specialization in Constitutional cases, Labour – Service Matters and Arbitration Matters. Was counsel for numerous Public Sector Undertakings, Educational Institutions, Banks & Financial Institutions and various Private Sector Corporations. Was also a law teacher in Campus Law Centre, Delhi University from 1984-89. Was Vice-President, Delhi High Court Bar Association during 1994-95. Was member of the Governing Body of various colleges from time to time. Designated as Senior Advocate by Delhi High Court on 30th September, 1997.
▪ Appointed as Judge of High Court of Delhi w.e.f. 7th July, 1999. Became the Acting Chief Justice of Delhi High Court w.e.f. 10th October, 2011 and was elevated as the Chief Justice of Punjab and Haryana High Court w.e.f. 23rd September, 2012. Elevated as Judge, Supreme Court of India on 12th April, 2013. As a Judge, dealt with all kinds of jurisdictions and given many landmark judgments. Has attended/ chaired various national and international seminars and workshops and presented number of papers therein. Many articles are published in various magazines. Has authored about two thousand reported judgments in his judicial career. He has also authored many landmarking judgments in the area of human rights viz., Transgenders, Euthanasia, Disability, Child trafficking, Sentencing, Child Labour, Juvenile Delinquents, etc.
▪ Has also rendered numerous judgments in the field of commercial and arbitration laws, tax laws, Intellectual Property matters and economic laws. In arbitration law itself, judgments are more than 200 in the High Court and Supreme Court.
▪ Was chosen as one of the 50 most influential persons in Intellectual Property in the world in the survey conducted by prestigious international organisation viz. Managing Intellectual Property Association (MIPA) for the year 2007 in recognition to his contribution to the growth of Intellectual Property Laws through his judgment.
▪ After retirement, he is working as an Arbitrator and Mediator and doing both domestic as well as international arbitrations in the capacity of Chair or Co-arbitrator as nominated by the Parties.
▪ Was appointed as part-time teacher in Faculty of Law, University of Delhi and worked in that capacity during 1984-89. Even after elevation to the Bench, continued to visit various law schools for giving special lectures. Has been a resource person for imparting training to the Judges in National Judicial Academy (India) as well as State Judicial Academies.