Raj practises in the areas of human rights, constitutional and administrative law, labour relations, civil litigation, professional negligence and discipline. He is a former Chief Commissioner of the Ontario Human Rights Commission and presently acts for complainants and respondents in internal investigations and Ontario and federal applications. He has acted as a Board of Inquiry under the Ontario Human Rights Code and the Police Services Act, as Co-Chair of the University of Toronto Tribunal and as counsel to a number of administrative tribunals. He is presently the Vice Chair of the Law Society of Upper Canada Tribunal's Hearing Division. In 2012, he was appointed as Chair of the Law Society's Working Group on Challenges faced by Racialized Lawyers and Paralegals. The Law Society adopted its final report in December 2016, setting out mandatory, voluntary, educational and policy measures to reduce systemic racism in the legal professions in Ontario.
Raj has spoken and written on diverse subjects including trial, appellate and administrative advocacy and human rights. He graduated with the Dean's Key in 1978 from the University of Toronto Faculty of Law. He served in 1986-1987 as a Task Force to the Ontario Government on the Law Concerning Trespass to Publicly-used Property as it Affects Youth and Minorities.
In 1997, Raj was the first recipient of The Advocates' Society Award of Justice. His experience as an adjunct professor includes "The New Administrative Law" in the LL.M. programme at Osgoode Hall Law School and "Diversity and the Legal Profession" at U of T's Faculty of Law. He has acted for a variety of parties in public interest litigation and commissions of inquiry. For seven years he was the Advocates' Society representative on the Equity Advisory Group of the Law Society. He also served on the Board of Trustees of the Centre for Addiction and Mental Health, the Boards of Directors of two community clinics and Legal Aid Ontario, the Advocates' Society and Pro Bono Law Ontario, and as President of the latter organization and the University of Toronto Law Alumni Council. He is presently a member of the Equality Rights Panel of the Federal Court Challenges Programme.
In 2003, Raj received the Law Society Medal, the highest honour awarded by the governing body of the legal profession in Ontario, and in 2007 and 2011 he was elected by the profession to four-year terms as a bencher of the Law Society. In June 2007, he was awarded Professional Man of the Year by the Indo-Canada Chamber of Commerce. In April 2008, he was appointed by the Province of Ontario as the Founding Chair of its Human Rights Legal Support Centre. In 2010 Raj received the award for Distinguished Career from the South Asian Bar Association. In 2013 he was awarded the inaugural Roy McMurtry Fellowship at Osgoode Hall Law School to teach ethics and professionalism.