Social impact assessment (SIA) is a methodology to review the social consequences of any project, intervention and actions. Through the process of SIA, stakeholders can be better informed for the planning of future social services. In this session, Dr. William Yu from World Green Organisation, Mr. Pat-Nie Woo from KPMG and Mr. Alvin Cheung from Our Hong Kong Foundation will explain the purpose of SIA and how to do the assessment in an objective and rigorous way.