h. d. karunaratne introduced two new academic disciplines to the faculty of management and finance, university of colombo as business economics and international business. he was the founder head of business economics unit which was established at the faculty in 2003 and instrumental to introduce a four-year bachelor's degree program as bachelor of business administration in business economics in 2007. after returning from the invited professorship in hosei university tokyo, in 2008, he introduced a four-year bachelor's degree program named bba in international business, by accomplishing university of colombo as the first sri lankan state-own university to offer the program. subsequently, under his deanship, he was instrumental to establish the mba degree program in international business. h. d. karunaratne is the founder of the department of international business in the university of colombo in 2014.