Enforcement Rules of the National Health Insurance Act Article 29

In case the beneficiary is in any one of the following circumstances, the group insurance applicant shall complete and submit in three days one copy of the Insured Coverage Application Form to the Insurer in order to process insurance coverage:1. The circumstances contemplated in Articles 8 or 9 of the Act;2. Change of group insurance applicant; or3. Change of insurable status.
中文原文 全民健康保險法施行細則第29條
保險對象有下列情形之一者,投保單位應於三日內填具保險對象投保申報表一份,送交保險人辦理投保手續:
一、合於本法第八條或第九條規定者。
二、轉換投保單位。
三、改變投保身分。

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