From 1992 to 1995, Khaw served as the Principal Private Secretary to Prime Minister Goh Chok Tong (who is currently Emeritus Senior Minister) From 1995 to 2001, he served as the Permanent Secretary at the Ministry of Trade and Industry.
Dari 1992 sampai 1995, Khaw menjabat sebagai Sekretaris Pribadi Utama Perdana Menteri Goh Chok Tong (yang sekarang menjadi Menteri Senior Emeritus) Dari 1995 sampai 2001, ia menjabat sebagai Sekretaris Permanen di Kementerian Perdagangan dan Industri.