Mr. Deen assists clients involved in different industries such as business process outsourcing and energy. He is a leading practitioner in Cebu.
He is also past Presidents and still an active member of different associations such as the Cebu Chamber of Commerce and Industry, Cebu Chapter of the American Chamber of Commerce, and Cebu Chapter of the Integrated Bar of the Philippines.
Mr. Deen also served as director and officer of various corporations.
He was admitted to the Philippine Bar in 1959 and is a member of the Cebu City Chapter of the Integrated Bar of the Philippines.