O.P.Sharma joined D.M. (Govt.) College, Imphal (Manipur) as a Lecturer in English in 1963.In 1966 he shifted to S.D. College, Sri Ganganagar (Raj.) Having worked there for five years, he joined Bihani College of Education in 1971, where he worked for over two decades and finally retired as the Principal. Apart from teaching, he has written three books. 1. Education for National Progress. 2. Great Men of India. 3. Indian Culture. He has also contributed about 200 articles to newspapers and magazines like The Hindustan Times, The Times of India, The Tribune, Free Press Journal, Caravan, Himshikha, Teacher Today, Current Events, Career's Digest, Mirror, Woman's Era, Art of Living, Femina, Social Welfare, The Competition Master.