Tom has practiced real estate development and commercial law since his call to the British Columbia bar in 1972. Tom became a partner in a downtown firm in 1975 and practiced with that firm until 1996, when he established Baillie Law Corporation.

Throughout his career, Tom has assisted individuals, families, businesses and other organizations in a wide variety of legal matters. He has lectured at Continuing Legal Education seminars and has served in various capacities with British Columbia Bar Association groups. He has been extensively involved in the Vancouver and West Vancouver communities and has worked with number of charitable organizations. He was appointed Queens Counsel in 2005.