Dental Technicians Act Article 20

The dental technician or assistant dental technician who applied for the establishment of the dental laboratory shall be the responsible dental technician or responsible assistant dental technician in charge of overseeing the business of the laboratory. If the responsible dental technician or assistant dental technician is unable to conduct business, the dental laboratory may appoint a substitute who meets the qualification requirement for responsible dental technician or responsible assistant dental technician. Where the period of substitution exceeds one month, the original competent authority that issued the business license shall be informed for reference purpose. The period of substitution mentioned in the preceding paragraph shall not be longer than one year.
中文原文 牙體技術師法第20條
牙體技術所應以申請設立者為負責牙體技術師、負責牙體技術生,對其業務負督導責任。
牙體技術所負責牙體技術師、負責牙體技術生因故不能執行業務,應指定合於負責牙體技術師、負責牙體技術生資格者代理之。
代理期間超過一個月者,應報請原發開業執照機關備查。
前項代理期間,最長不得逾一年。

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