Occupational Safety and Health Act Article 18

(Ⅰ)When there is a concern of a potential imminent danger at a workplace, the employers or people responsible for the workplace shall immediately issue orders to halt work and withdraw laborers to a safe location.(Ⅱ)When laborers discover there is a concern of a threat of imminent danger while executing their duties, under conditions in which the safety of other workers is not jeopardized, they may terminate work of their own accord and withdraw to safe locations, and immediately report to their direct supervisors.(Ⅲ)The employers shall not dismiss, reassign, not pay wages for the period of work on halt, or otherwise impose unfavorably treatment on laborers taking actions prescribed in the preceding paragraph. However, employers are not subject to this restriction if they can prove that laborers have abused their rights to suspend work and have been affirmed by the competent authority for having complied with labor regulations.
中文原文 職業安全衛生法第18條
工作場所有立即發生危險之虞時,雇主或工作場所負責人應即令停止作業,並使勞工退避至安全場所。
勞工執行職務發現有立即發生危險之虞時,得在不危及其他工作者安全情形下,自行停止作業及退避至安全場所,並立即向直屬主管報告。
雇主不得對前項勞工予以解僱、調職、不給付停止作業期間工資或其他不利之處分。
但雇主證明勞工濫用停止作業權,經報主管機關認定,並符合勞動法令規定者,不在此限。

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