Oregon Revised Statutes Occupations and Professions § 701.435

(1) When a contractor on a public contract deposits bonds, securities or other instruments under ORS 279C.560 (4), if the subcontract price exceeds $50,000 and constitutes more than 10 percent of the cost of the public contract, a subcontractor on the public contract may deposit bonds, securities or other instruments with the contractor or in a bank or trust company for the contractor to hold for the contractor's benefit in lieu of moneys held as retainage. If the contractor accepts the bonds, securities or other instruments deposited as provided in this subsection, the contractor shall reduce the moneys held as retainage in an amount equal to the value of the bonds, securities and other instruments and pay the amount of the reduction to the subcontractor in accordance with ORS 701.420 and 701.430. Interest or earnings on the bonds, securities or other instruments shall accrue to the subcontractor.

(2) When a contractor on a public contract elects to have the public contracting agency deposit the accumulated retainage in an interest-bearing account under ORS 279C.560 (5), the contractor, within 30 days following payment of the final amount due for construction of the public improvement, shall pay to each subcontractor who performed work on the construction the subcontractor's proportional share of the interest earnings that accrued to the contractor as a result of the election. A subcontractor's share of the total amount of interest earnings under this subsection shall be determined by the proportion that the amount of retainage withheld from the subcontractor bears to the amount of retainage withheld from the contractor and the length of time the retainage was withheld from the subcontractor. A share of the interest earnings shall be paid to a subcontractor under this subsection only when:

(3) If the contractor incurs additional costs as a result of the exercise of an option described in subsection (1) or (2) of this section, the contractor may recover the costs from the subcontractor by reducing the final payment. As work on the subcontract progresses, the contractor shall, upon demand, inform the subcontractor of all accrued additional costs.

(4) Bonds, securities and other instruments deposited or acquired in lieu of retainage, as permitted by this section, must be of a character approved by the Director of the Oregon Department of Administrative Services, including but not limited to: