Labor Union Act Article 38

In case that a labor union has made a resolution for merging or spitting, it shall complete the merging and spitting within one year from the date when the resolution is made.When a corporate union is merging as a result of the amalgamation of plant cites or business units, the merging shall be completed within one year after the amalgamation standard date is set. In case that the merging has not completed upon the expiration of the said period, the competent authority may order it to merge within a given period, and if the merging cannot be achieved, the labor union shall be ordered to restructure.When a labor union has merged or spitted in accordance with the preceding two Paragraphs, it shall within thirty days after the completion of merging and spitting report the processes, union charter, name lists of directors or supervisors to the competent authority for review and record.In case that an administrative district has changed, a labor union may maintain its original name after the resolution of a general meeting of members or member representatives. Provided that, when the name of a labor union has changed, it shall submit the minute of the meeting to the competent authority for review and record within ninety days after the change of the administrative district. When the labor union has changed its name, which cannot be identical with that already registered by other labor union.In case that a labor union has resolved in accordance with the preceding Paragraph, the counting of its sequence shall be resolved by its general meeting of members or member representatives.
中文原文 工會法第38條
工會經議決為合併或分立時,應於議決之日起一年內完成合併或分立。
企業工會因廠場或事業單位合併時,應於合併基準日起一年內完成工會合併。
屆期未合併者,主管機關得令其限期改善,未改善者,令其重新組織。
工會依前二項規定為合併或分立時,應於完成合併或分立後三十日內,將其過程、工會章程、理事、監事名冊等,報請主管機關備查。
行政組織區域變更時,工會經會員大會或會員代表大會議決,得維持工會原名稱。
但工會名稱變更者,應於行政組織區域變更後九十日內,將會議紀錄函請主管機關備查。
工會名稱變更者,不得與登記有案之工會相同。
依前項規定議決之工會,其屆次之起算,應經會員大會或會員代表大會議決。

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