Labor Inspection Act Article 14

(Ⅰ)Labor inspector shall, for carrying out the inspection duties, be allowed enter the business entity at any time. The employer, any designated acting on behalf of the employer, employees, and any other persons in concern shall not refuse, avoid or obstruct the inspection without trustful reason.(Ⅱ)When necessary, the labor inspector may request assistance from police to deal with the refusal, avoidance or obstruction of the inspection.
中文原文 勞動檢查法第14條
勞動檢查員為執行檢查職務,得隨時進入事業單位,雇主、雇主代理人、勞工及其他有關人員均不得無故拒絕、規避或妨礙。
前項事業單位有關人員之拒絕、規避或妨礙,非警察協助不足以排除時,勞動檢查員得要求警察人員協助。

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