Yeh worked in advertising for seventeen years prior to entering politics after her husband,
Cheng Nan-jung, a dissident, chose to commit suicide rather than be arrested in 1989. In 1992, she was the deputy convener of the
Democratic Progressive Party (DPP) Caucus in
Legislative Yuan, and convener in 1995.
First DPP administration From 2000 to 2002, Yeh was third in the Cabinet in her position as Minister of Transportation and Communications. She was Chairperson of the
Council for Hakka Affairs from 2002 to 2004. In 2004 she was named Vice Premier, as well as Minister of Consumer Protection and Minister responsible for the Council for Economic Planning and Development. In late 2005, she became the first female acting mayor of Kaohsiung when then-mayor
Frank Hsieh was appointed
Premier. She was sworn in as the Presidential Office secretary-general in August 2007. Yeh was amongst the front runners to serve as DPP
2008 presidential candidate Frank Hsieh's vice-presidential running mate, however former Premier and DPP Chairman
Su Tseng-chang was eventually chosen for the role.
Second & third DPP administration During the
Presidency of Tsai Ing-wen, Yeh served as the
senior advisor of the
Office of the President. In 2017, she was elected chairwoman of the Taiwan Visitors Association. ==Notes==