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 TM Asia Life Singapore Ltd and a member of the Board of Emirates National Oil Company (Singapore) Pte Ltd, Innovalues Limited, Sunningdale Tech Limited and Tokio Marine Asia Insurance Singapore Ltd. Mr Ong also serves as an Advisory Board Member of the School of Accountancy at the Singapore Management University. He is a member of the Investigation Committee and the Accounting Standards Council, of the Institute of Certified Public Accountants of Singapore. He is an Advocate and Solicitor of the Supreme Court of Singapore, Barrister-at-Law, Lincoln's Inn, a Certified Public Accountant in Singapore and a member of the Singapore Institute of Directors.