Or. Admin. R. 438-005-0065
Notice of denial or other notice from which statutory time runs against a claimant shall be in writing and shall be delivered by registered or certified mail with return receipt requested or by personal service meeting the requirements for service of a summons.
ORS 656.307, 656.388, 656.543 & 656.726(4)
ORS 656.262(6)
WCB 5-1987, f. 12-18-87, ef. 1-1-88
WCB 1-1984, f. 4-5-84, ef. 5-1-84