Farmer Health Insurance Act Article 9

The insured unit shall, on the very day when examining this Insurance qualifications of the farmers who belong to the establishment, notify the insured persons whether they are covered by this Insurance or not; and the commencement or termination of the effectiveness of insurance shall be counted from the very day when the notice is given. If the insured unit doesn't give such notice to the insured persons on the very day of examination, it shall compensate for the payment paid by the insured persons in accordance with this Act.
中文原文 農民健康保險條例第9條
投保單位應於審查所屬農民投保資格通過加保或喪失資格退保之當日,列表通知保險人;其保險效力之開始或停止,均自應為通知之當日起算。
但投保單位未於投保資格審查通過之當日列表通知保險人者,對保險人依本條例所為之給付,應負賠償責任。

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