h. d. karunaratne was the elected external member to the board of faculty of humanities and social sciences, at the open university of sri lanka from 2010 to 2014. he also works as a member of the faculty board at the faculty of graduate studies, general sir john kotelawala defence university, ratmalana. h. d. karunaratne became the president of the japanese graduates' alumni association of sri lanka (jagaas) in 2014. he was the secretary to the same association from 2010 to 2013. he is the vice president of sri lanka economic association since october 2014 and he was the editor for sri lanka economic journal published by the same association from 2010 to 2013.