Enforcement Rules of the Labor Insurance Act Article 22

In the event that the insured person's death, termination of employment, withdrawal from membership of associations, or conclusion (or withdrawal) of vocational training programs, the insured units shall, on the dates on which death, termination of employment, withdrawal from membership of associations, or conclusion (or withdrawal) of vocational training programs occurred, fill out the application forms for withdrawal of insurance coverage and submit them to the insurer.In the event that the insured persons are on the leave of absence due to injuries or illness, the insured units may not withdraw their insurance coverage.
中文原文 勞工保險條例施行細則第22條
被保險人死亡、離職、退會、結(退)訓者,投保單位應於死亡、離職、退會、結(退)訓之當日填具退保申報表送交保險人。
被保險人因遭遇傷害或罹患疾病在請假期間者,不得退保。

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