Enforcement Rules of the Civil Service Training and Continuing Education Act Article 12

In accordance with the Act, after the completion of a domestic or foreign full-time continuing education program, participation in the program may be extended with approval of the specific competent authority. However, during the period of extension the participant shall be granted leave without pay.
中文原文 公務人員訓練進修法施行細則第12條
依本法選送國內外全時進修期滿,經各主管機關核准延長者,延長期間應予留職停薪。

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