ORS § 53.040
The undertaking of the appellant must be given with one or more sureties, to the effect that the appellant will pay all costs and disbursements that may be awarded against the appellant on the appeal. The undertaking does not stay the proceedings unless the undertaking further provides that the appellant will satisfy any judgment that may be given against the appellant in the appellate court on the appeal. The undertaking must be filed with the justice within five days after the notice of appeal is given or filed. The justice may waive, reduce or limit the undertaking upon a showing of good cause, including indigency, and on such terms as shall be just and equitable. The justice or the appellate court may waive a failure to file the undertaking within the time required upon a showing of good cause for that failure.
ORS 53.040