He is also teaching in the Department of Evening Studies-Multi Disciplinary Research Centre (DES-MDRC) and University School of Open Learning (USOL), Panjab University, Chandigarh. He is specialised in the fields of Dalit Politics in India; State Politics in India and Caste System and Democracy in India. He has 30 manuscripts published in national and international esteemed and reputed publications. Dr. Nirmal Singh has also presented his 28 research papers in various national and international seminars/conferences. He is continuously updating his knowledge with further research and studies in the areas of his interests.