Chan was a member of Environmental Impact Assessment Review Committee of the EPA in 2005–2007, member of National Planning Commission and member of Regional Planning Committee of the
Ministry of the Interior in 2007-2011 and 2009-2011 respectively, member of Trust Law Amendment Study Sub-committee of the
Ministry of Justice in 2010-2016 and member of Legal Affairs Committee of the
Council of Indigenous Peoples in 2011–2016. A year later, Chan notified the
Executive Yuan that he intended to resign. His second resignation was not accepted until October 2018, when Chan posted about it on social media. ==References==