Okla. Stat. tit. 40, § 2-603
The claimant or any other party entitled to notice of a determination may file an appeal from such determination with the appeal tribunal within ten (10) days after the date of mailing of the notice to the claimant’s or other party’s last-known address or, if such notice is not mailed, within ten (10) days after the date of delivery of such notice. The claimant or other party may file an appeal in any manner allowed by Section 1-224 of this title or by telephone through the Commission’s interactive voice response system or by speaking with one of the Commission’s claims representatives. In order to be considered timely, filing of an appeal made by telephone through the interactive voice response system shall be completed by 12 midnight on the date it is due, and filing of an appeal made by telephone through a claims representative must be completed before the end of normal business hours.
Laws 1980, SB 637, c. 323, § 2-603, eff. October 1, 1980; Amended by Laws 2002, SB 1404, c. 452, § 12, eff. November 1, 2002 (superseded document available).