She has served over 40 clients from Singapore, Malaysia, Cambodia, Philippines, Japan, France, Portugal, Spain, UK and the USA.

[3] Ong held leadership roles with multinational organisations including Pearson Plc, New York Institute of Finance, The Terrapinn Group and United Overseas Bank.

[5] From 2008 to 2013, Ong was Managing Director (Indonesia, Malaysia & Singapore) at Omega Performance Inc, a Washington DC-headquartered strategy and performance-improvement consulting group for banks and financial institutions.

[6] In 2013, Ong founded the social project Playground of Joy, introducing an educational programme that integrates mindfulness into its curriculum.

[6] Ong is working on expanding her Playground of Joy project to Rohingya refugees in Bangladesh, while also serving children with special needs and financial assistance within Singapore.

[7] Through its employment of the deaf and individuals with mental health issues, Hush seeks to bridge the gap between the hearing and non-hearing world.

[citation needed] In December 2019, Ong launched a public consultation on mental healthcare in Singapore, intending on utilising the findings to support her Budget 2020 speech.

[10] From 2014 to 2016, she was also a Founding Board Member of Daughters of Tomorrow, a registered charity that supports the empowerment of women through individualised coaching.