Civil Service Training and Continuing Education Act Article 11

The duration of full-time domestic continuing education programs for those civil servants chosen by the employing agency or school shall be a maximum of two years. However, following the approval of the competent authority, it may be extended for a maximum of one year.Civil servants chosen by the employing agency or school to participate in full-time domestic continuing education programs as referred to in the preceding paragraph shall return to the employing agency to resume their duties during summer and winter vacations. However, if there exists a reason pertaining to program study needs, following the approval of the competent authority, this restriction shall not apply.
中文原文 公務人員訓練進修法第11條
各機關學校選送國內全時進修之公務人員,其進修期間為二年以內。
但經各主管機關核准延長者,延長期間最長為一年。
前項全時進修之公務人員於寒暑假期間,應返回機關上班。
但因進修研究需要,經各主管機關核准者,不在此限。

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