Mr Ong is a Director at Drew & Napier LLC where he heads the Tax & Private Client Services Group. He is the Non-Executive Chairman of Tokio Marine Life Insurance Singapore Ltd and a member of the Board of Emirates National Oil Company (Singapore) Pte Ltd, Innovalues Limited, Sunningdale Tech Limited and Tokio Marine Insurance Singapore Ltd. Mr Ong also serves as an Advisory Board Member of the School of Accountancy at the Singapore Management University. He is an Advocate and Solicitor of the Supreme Court of Singapore, a Barrister-at-Law of Lincoln's Inn, a Fellow of the Institute of Certified Public Accountants in Singapore and a member of the Singapore Institute of Directors.