Ong is the founder of ROHEI, a learning and consulting partner operating in Singapore.[2][4] She is also patron of Trybe, a registered charity aimed at helping youths.[2][4][3]
In 2021, Ong began to chair The Purple Parade, Singapore's largest movement to support inclusion and celebrate abilities of Persons with Disabilities.[5]
Ong serves in the Government Parliamentary Committees for Defence, Foreign Affairs and Manpower.[8] She is also a member of the Estimates Committee in Parliament,[9] an adviser to the Telok Blangah grassroots organisations, and vice chairperson of the West Coast Town Council.[10] She is also the co-Chairperson of the PAP Mental Health Group launched in Oct 2024. [11]
The party affiliation of each member is indicated right after the constituency/seat he or she represents. PAP: People's Action Party; WP: The Workers' Party; PSP: Progress Singapore Party All of the leaders of the respective GRCs are in underline. MP(s) who is go on a leave of absence is in italic. NMPs do not belong to any party.