▁Secretary - General ▁( AS G ) ▁in ▁the ▁N T UC , ▁which ▁has ▁close ▁t ies ▁with ▁the ▁Singapore ▁government . ▁ ▁In ▁December ▁ 2 0 1 6 , ▁Ye o ▁was ▁promoted ▁to ▁Ass istant ▁Director - General ▁in ▁N T UC . ▁ ▁Ye o ▁is ▁also ▁the ▁chairman ▁of ▁the ▁N T UC ' s ▁M igr ant ▁Work ers ' ▁Centre , ▁which ▁was ▁set ▁up ▁in ▁ 2 0 0 9 . ▁He ▁is ▁also ▁the ▁head ▁of ▁the ▁Centre ▁for ▁Dom estic ▁Emp loy ees , ▁and ▁the ▁director ▁for ▁Work place ▁Saf ety ▁and ▁Health . ▁ ▁Ye o ▁was ▁president ▁of ▁the ▁Cons um ers ▁Association ▁of ▁Singapore ▁( CASE ), ▁a ▁consumer ▁advoc acy ▁group ▁founded ▁by ▁the ▁N T UC , ▁until ▁June ▁ 2 0 1 2 . ▁Some ▁have ▁critic ized ▁CASE ▁for ▁being ▁to oth less . ▁ ▁Polit ics ▁▁ ▁Ye o ▁was ▁a ▁Member ▁of ▁Parliament ▁for ▁Ch eng ▁San ▁Group ▁Represent ation ▁Const itu ency ▁( G RC ) ▁from ▁ 1 9 9 7 ▁to ▁ 2 0 0 1 , ▁Al j un ied ▁G RC ▁from ▁ 2 0 0 1 ▁to ▁ 2 0 1 1 ▁and ▁Ang ▁Mo ▁K io ▁G RC ▁from ▁ 2 0 1 1 ▁to ▁ 2 0 1 5 . ▁During ▁the ▁ 2 0 1 5 ▁general ▁election , ▁he ▁led ▁the ▁P AP ▁team ▁for ▁Al j un ied ▁G RC ,