Mrs. Yau was a Board Member at Christian Action from 1994 to 2001. She was invited to rejoin the Board in 2023. Mrs. Yau has served in Hong Kong for many years, with over 30 years of experience in the Hong Kong Civil Service and management. She was also the Executive Director of the Vocational Training Council (VTC) from 2013 to 2021. After which Mrs. Yau was invited to be an Advisor to “Our Hong Kong Foundation” and “The Hong Kong Halls of Commons” in addition to, loyal service on numerous Boards and Committees in the commerce, industry, and education sectors.