Oregon's notice counts in business days and carves out labor on commercial improvements. The form is prescribed word for word, warnings and reverse side included, and it goes to the owner of the site.
Who must give it, and the commercial exception
"A person furnishing any materials, equipment, services or labor described in ORS 87.010 (1) to (3), (5) and (6) for which a lien may be perfected" (87.021(1)) — except when it is furnished at the request of the owner. On a commercial improvement ("any structure or building not used or intended to be used as a residential building", 87.021(3)(b)(A)), a person who performs labor, provides labor and material, or rents equipment need not give the notice; materials-only suppliers and service providers still do. A residential building is one occupied by the owner as a residence, not more than four units (87.021(3)(b)(B)).
Who receives it
"The owner of the site" (87.021(1)). A copy to the original contractor is optional; on a commercial improvement a hold-harmless clause is enforceable only if a copy reaches the original contractor within 10 days after the owner's receipt (87.021(4)). A mortgagee is not a recipient of this notice.
The eight-business-day lookback
The notice "may be given at any time during the progress of the improvement, but the notice only protects the right to perfect a lien for materials, equipment and labor or services provided after a date which is eight days, not including Saturdays, Sundays and other holidays as defined in ORS 187.010, before the notice is delivered or mailed" (87.021(1)). A lien "may be perfected … only to the extent that the notice … is given" (87.021(3)(a)).
What it must say
ORS 87.023 prescribes the form: NOTICE OF RIGHT TO A LIEN; the WARNING; To / Owner / Owner's address / Date of mailing; "This is to inform you that … has begun to provide … ordered by … for improvements to property you own. The property is located at …"; the eight-day sentence; the full-payment sentence; "THIS IS NOT A LIEN"; the sender's name, address and telephone; and the reverse side headed IMPORTANT INFORMATION FOR YOUR PROTECTION with the WAYS TO PROTECT YOURSELF.
How it is served
"Delivered in person or by registered or certified mail" (87.018(1)); the lookback runs from the date the notice is "delivered or mailed" (87.021(1)). No return receipt is required by the pinned text.