His areas of expertise include labour law, constitutional law, administrative law, and municipal law. Professor Cheadle has a wealth of experience in activist lawyering, and acted on behalf of workers’ unions in the struggle towards equality under the Apartheid regime. He has participated in the drafting of the Bill of Rights in the final Constitution and various labour statutes, including the Labour Relations Act, 1995, the National Economic Development and Labour Council Act, 1994. In addition, Professor Cheadle has also been involved as an author and editor of various books and journal articles on labour and constitutional law, and has sat as an acting judge in the High Court and the Labour Court.