Dato’ Alizatul Khair Osman Khairuddin graduated with a Bachelor of Laws (Honours) from the University of Malaya in 1976 and a Master of Laws from the London School of Economics, University of London, UK, in 1982.

Dato’ Alizatul Khair has extensive experience in the legal and judicial fields since 1976. Among the posts she held were Legal Advisor to the Ministry of Education, Deputy Head of the Civil Division of the Attorney General’s Chambers and State Legal Advisor of Penang at the Penang State Legal Advisor’s Office in 1995.

Dato’ Alizatul Khair was later appointed a Judicial Commissioner at the Shah Alam High Court (2003), Judge at the Shah Alam High Court (2004), Judge at the Kuala Lumpur High Court (2008) and Judge of the Court of Appeal in 2011.

In 2017, Dato’ Alizatul Khair was appointed to the Federal Court where she served until her retirement in 2019.