 In 1988, Louie became a partner of Honolulu law firm Roeca, Louie and Hiraoka (RLH), and was the managing partner from 1988 to 2010, practicing in the areas of civil litigation, insurance defense, construction defect litigation and commercial litigation.Louie served as Director, Vice President and President of the Hawaii State Bar Association from 1995 to 2001.Louie also served as Vice-President, Secretary-Treasurer, and a Director of the Hawaii Defense Lawyers Association (1993–2010).