ORS § 238.710
In addition to the remedies otherwise provided by ORS 238.705, the board may, by petition in usual form, apply to the circuit court for the county in which is located the public employer concerned, or the principal office or place of business of the public employer, for, and if warranted, to have issued, writs of mandamus to compel the public employer to supply to the board a true and complete list and employment records of the employer's employees and all information concerning the employees that reasonably may be required and sought by the board in the petition. The writs, among other things, shall direct the defendant to make contributions to the retirement fund on account of the defendant's employees as may appear, from records and information concerning the defendant's employees, to be required by law. Either or both parties thereby aggrieved may appeal to the Court of Appeals from, or from any part of, the judgment of the circuit court in the proceeding, as in ordinary mandamus proceedings.
ORS 238.710