She also supervises year 4 medical students at the Yong Loo Lin School of Medicine, NUS, in medico-legal and business issues in their electives. Professor Tay is an advocate and solicitor of the Supreme Court of Singapore, and a barrister-at-law (of Lincoln's Inn, United Kingdom). She is the author of 30 law books, including books on medical negligence and other medico-legal and ethical issues.