He owns a legal firm named Chong Brothers Advocates.
He is currently the Member of Parliament (MP) of Malaysia for Stampin and three-term assemblyman (MLA) of the Sarawak State Legislative Assembly for Kota Sentosa.
He was previously three-term MP for Bandar Kuching between 2004 and 2018.
He is also a vice-chairperson of DAP Malaysia, the Chairman of DAP Sarawak, DAP Socialist Advisor of Youth Sarawak & Kuching, DAP Kuching Branch chairman and Life member of DAP since 1998.