Verified answer

The arbitrator is usually consented to by you and the other party in a contract. A lot of contracts include arbitration provisions, and when you sign, you agree to the arbitrator's authority.

Arbitration can be authorized 2 ways - pursuant to an agreement whereby you have waived your right to a jury trial or by consent of the parties in a civil action.

You should never sign any agreement that has an arbitration clause.

The courts.