[1] An expert on Assam, and of north-east Indian problems, his mother tongue was Assamese though he had a deep knowledge of English.
Kalita worked for one of the main daily newspapers of the north-eastern region, The Sentinel, where he started his career,[2] and was the editor of the Arunachal Pradesh and Meghalaya editions.
[3] He also was the Editor of The North East Times and of the main Assamese-language newspaper Janasadharan.
[2][4] Tarun Gogoi, the Chief Minister of Assam, said that "Kalita had an in-depth knowledge and understanding of the problems plaguing the State and the region and created public opinion through his writings.
[5] His wife, Garima Kalita, is a retired Head of The Department of Philosophy of Udalguri College, Assam, and is currently settled at Guwahati[5]