From 1974 to 1976, he served both as a Magistrate and a Senior Magistrate in the Subordinate Courts. Kan went into private practice from 1976 to 1991, where he was successively a partner in the law firms of Hilborne & Co, RCH Lim & Co and Low Yeap & Co. He was appointed as Judicial Commissioner on 2 May 1991, and a Judge of the Supreme Court on 2 May 1994.
From 1974 to 1976, he held both Magistrate and Senior Magistrate positions in Subordinate Courts. Kan transitioned into private practice from 1976 to 1991, where he served as a partner at Hilborne & Co, RCH Lim & Co, and Low Yeap & Co. He was appointed Judicial Commissioner on May 2nd, 1991, and Judge of the Supreme Court on May 2nd, 1994.