Arbitration is usually binding; when the two parties agree to submit their dispute to the arbitration process, they agree to abide by the decision of the arbitrator. In binding arbitration, the parties usually have no appeal option, unless an appeal has been included in an arbitration clause or contract. Some arbitration decisions may be reviewed by a judge and the decision may be vacated (removed) if it can be proved hat the arbitrator was biased. Some arbitration may be non-binding, depending on contract language or the situation.