Its wordings
Arbitration Act
Article 21, paragraph (1)
第二十一条第一項
Each amendment that changed this provision, and each that will, oldest first. Each is shown against the wording just before it; where an amendment gives the provision another number, it is followed under the new one. Read it as it stands today
In force today
The arbitrator's duties end for the following reasons:
仲裁人の任務は、次に掲げる事由により、終了する。