Datuk Tay has been a legal practitioner for more than 20 years and had previously served as the Chairman of the Industrial Court from 2010 to 2013. She is currently the Legal Advisor for the Ministry of Domestic Trade, Cooperatives and Consumerism since 2013 and had previously been the Legal Advisor for other ministries such as the Ministry of Plantation Industries and Commodities (MPIC) and the Ministry of Works.
She holds an LLB degree from the University of Malaya and Masters in International Legal Studies from the University of Nottingham, Malaysia. She started her service with the government since 1989 as legal officer and served as a magistrate at Petaling Jaya Court in 1992. She held various positions during her tenure at the Attorney’s General Chambers mostly in Advisory Division and Drafting Division as well as Prosecution Division. Datuk Tay was thrice awarded excellent service awards during the span of her public service career.