社員は、前条、第六百九条第一項、第六百四十二条第二項及び第八百四十五条の場合のほか、次に掲げる事由によって退社する。
Beyond the cases provided for in the preceding Article, Article 609, paragraph (1), Article 642, paragraph (2) and Article 845, members withdraw on the grounds set forth below:
定款で定めた事由の発生
grounds provided for in the articles of incorporation having arisen;
総社員の同意
the consent of all members;
死亡
death;
合併（合併により当該法人である社員が消滅する場合に限る。）
merger (but only if the member that is a corporation disappears in the merger);
破産手続開始の決定
a ruling to commence bankruptcy procedures;
解散（前二号に掲げる事由によるものを除く。）
dissolution (excluding that resulting from the grounds set forth in the preceding two items);
後見開始の審判を受けたこと。
being subject to a decision for commencement of guardianship; or
除名
removal.
A membership company can provide to the effect that no member withdraws due to some or all of the grounds set forth in items (v) through (vii) of the preceding paragraph.