The organization may contract with vocational rehabilitation vendors to provide vocational rehabilitation services to injured employees. The organization shall determine the criteria that render a vocational rehabilitation vendor qualified. If additional services are determined to be necessary as a result of failed or inappropriate rehabilitation of an injured employee through no fault of the employee, the organization may contract with the vendor for additional services. If the failure or inappropriateness of the rehabilitation of the injured employee is due to the vendor’s failure to provide the necessary services to fulfill the contract, the organization is not obligated to use that vendor for additional services on that claim and the organization may refuse payment for a service that the vendor failed to perform which was a material requirement of the contract.