Employment Service Act Article 73

In case any of the following occurs with respect to a foreign worker, the employment permit shall be annulled:1.The employed foreign worker has engaged in work for an employer who is not identified in the permit.2.The employed foreign worker has engaged, without being appointed by his/her employer, in work on their own initiative that is not within the scope of the permit;3.The employed foreign worker has been unjustifiably absent from their work and has not been in contact for three consecutive days or if employment has been terminated.4.The employed foreign worker has refused to undergo health examinations, submitted fake health examination sample(s), or failed health examinations, or their mental and/or physical condition(s) are/is not qualified for the assigned work, or they have been infected with any of the contagious diseases listed and announced by the central competent health authority.5.The employed foreign worker has been in serious violation of the regulations promulgated pursuant to Paragraph 2 or 3 of Article 48 or Article 49.6.Other than the above, the employed foreign worker has been in serious violation of applicable laws and regulations in the Republic of China.7.The employed foreign worker has refused to submit any information as required by applicable laws and regulations, or has submitted false information in violation of the applicable laws and regulations.
中文原文 就業服務法第73條
雇主聘僱之外國人,有下列情事之一者,廢止其聘僱許可:
一、為申請許可以外之雇主工作。
二、非依雇主指派即自行從事許可以外之工作。
三、連續曠職三日失去聯繫或聘僱關係終止。
四、拒絕接受健康檢查、提供不實檢體、檢查不合格、身心狀況無法勝任所指派之工作或罹患經中央衛生主管機關指定之傳染病。
五、違反依第四十八條第二項、第三項、第四十九條所發布之命令,情節重大。
六、違反其他中華民國法令,情節重大。
七、依規定應提供資料,拒絕提供或提供不實。

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