Its wordings
Arbitration Act
Article 20, paragraph (1)
第二十条第一項
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
If the following grounds are found, a party may file a petition to dismiss the arbitrator with the court. In this case, if the court finds that grounds related to the petition apply to the arbitrator, it must decide to dismiss the arbitrator:
当事者は、次に掲げる事由があるときは、裁判所に対し、仲裁人の解任の申立てをすることができる。この場合において、裁判所は、当該仲裁人にその申立てに係る事由があると認めるときは、当該仲裁人を解任する決定をしなければならない。