State-Owned Enterprise Management Act Article 36

Apart from the requirements of Article 13 of the Civil Servant Service Law, the employees of state-owned enterprise shall not be engaged by or invest in enterprises of a similar nature.
中文原文 國營事業管理法第36條
國營事業人員除遵照公務員服務法第十三條之規定外,不得經營或投資於其所從事之同類企業。

English translation for reference only; the Chinese text prevails. Not legal advice.