Collective Agreement Act Article 31
If major changes in economic conditions occur after a collective agreement is concluded, and if strict maintenances of that agreement will be inconsistent with the continued managing of the employer’s business, or sustaining the living standards of the workers, or it cannot obtain the goals of the agreement because of certain behaviors of the parties of a collective agreement, any party may request the other party to bargain and change the contents, or terminate the collective agreement.
中文原文 團體協約法第31條
團體協約簽訂後經濟情形有重大變化，如維持該團體協約有與雇主事業之進行或勞工生活水準之維持不相容，或因團體協約當事人之行為，致有無法達到協約目的之虞時，當事人之一方得向他方請求協商變更團體協約內容或終止團體協約。