Courts vary in requiring "mutuality" of agreement to submit claims to arbitration. That is, some courts require, as a condition of enforcement, that the employer agree to submit any claims it has against the employee to arbitration as well as requiring the employee to do so with claims against the employer. The idea that a contract must have reciprocal promises and not be completely one-sided is basic to contract law. However, not all courts enforce this rule in the arbitration area, as many have said there is no "mutuality" requirement for arbitration agreements.