Ms Worthaisong is a career officer with the Department of Foreign Affairs and Trade (DFAT). She was most recently Director, Malaysia, Brunei, Singapore Section, a position she held since 2009. Ms Worthaisong has previously served overseas in Laos and Thailand.
Ms Worthaisong holds a Graduate Diploma in Foreign Affairs and Trade and a Bachelor of Arts in Asian Studies with Honours from the Australian National University. Ms Worthaisong speaks Lao and Thai. She is married with two children.