ORS § 657.265
When a claimant files an initial claim or an additional claim, the Employment Department promptly shall give written notice of the claim filing to the claimant's most recent employing unit or agent of the employing unit. If the claimant did not receive or will not receive remuneration from qualifying employment, as described in ORS 657.176, in an amount greater than or equal to four times the claimant's weekly benefit amount from the claimant's most recent employing unit, the Employment Department shall notify the claimant's next previous employing unit or units or agents of the employing unit or units until the Employment Department has notified all of the claimant's former employing units, or the agents of the employing units, that, in the aggregate, have paid or will pay the claimant remuneration from qualifying employment, as described in ORS 657.176, in an amount that is equal to or exceeds four times the claimant's weekly benefit amount.
ORS 657.265