Dianna Olivia Lim is the founder and Principal of Aromaart International Pte Ltd with more than 25 years of experience in complementary therapies in health care industry as a therapist and an education provider for Aromatherapy, Lymphatic Drainage course, Diet & nutrition in both English and Chinese. While serving SISO Academy as Training Manager, she is also an active volunteer in Eldercare and the needy.

William Heng entered the Skillsfuture training space in 2008.  He brought with him thirty years of corporate experience in industries spanning manufacturing, fast-moving consumer goods, and logistics. These experiences gave him profound insight into the dynamics of workers and management relationships.

He has over a decade of experience conducting various WSH courses spanning from operations to managerial levels.  He has also collaborated with SISO Academy to develop and conduct specialized professional development programs in Emotional Intelligence, Engaging Multi-generational Workforce, Effective team Engagement, Creative Ways of Generating Ideas for WSH Professionals, Code of Ethics For WSH Trainers, and Coaching Skills for WSH Professionals.

William's latest interest is in workplace wellness. He strongly believes that poor mental health is more hazardous to workplace safety than other forms of hazards because it has few overt signs – most of the time, it is invisible until the conditions erupt or explode, and it usually results in very nasty consequences.

For this concern, he has taken a new project under the Total Workplace Safety and Health initiative to visit various construction sites to share ideas with migrant workers on managing occupation stress.