Labor Inspection Act Article 16

On criminal suspects of violating the Labor Acts, labor inspector(s) may, when necessary, acquire a search warrant from the prosecutor and search the workplace(s), office(s) and materials in concern. When deemed necessary, labor inspector(s) may detain documents and materials as evidence.
中文原文 勞動檢查法第16條
勞動檢查員對違反勞動法律規定之犯罪嫌疑者,必要時,得聲請檢察官簽發搜索票,就其相關物件、處所執行搜索、扣押。

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