Okla. Stat. tit. 85A, § 85A-306: Agreement to submit to arbitration

A. A written agreement to submit any existing or subsequent

controversy arising between the parties to arbitration is valid,

enforceable, and irrevocable except on a ground that exists at law

or in equity for the revocation of a contract.

B. An arbitrator shall decide whether a condition precedent to

arbitration has been fulfilled and whether a contract containing a

valid agreement to arbitrate is enforceable.

C. If a party to a proceeding challenges the existence of, or

claims that a controversy is not subject to, an agreement to

arbitrate, the arbitration proceeding may continue pending final

resolution of the issue by the Commission, unless the Commission

otherwise orders.