Employment Insurance Act Article 23

If there is a labor management dispute between the applicant and former employer due to the applicant leaving the employment, unemployment benefit may still be claimed.If the ruling on the preceding paragraph finds the applicant ineligible to claim unemployment benefit, then the applicant must return already received unemployment benefit within 15 days of the judgment. If the amount has not been returned by the appointed time, the case may be referred to court for compulsory execution.
中文原文 就業保險法第23條
申請人與原雇主間因離職事由發生勞資爭議者,仍得請領失業給付。
前項爭議結果,確定申請人不符失業給付請領規定時,應於確定之日起十五日內,將已領之失業給付返還。
屆期未返還者,依法移送強制執行。

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