Oregon Revised Statutes State Legislative Department and Laws § 171.505

The President of the Senate, the Speaker of the House of Representatives, the chairperson or vice chairperson of any statutory, standing, special or interim committee of either house of the Legislative Assembly, or the chairperson or vice chairperson of a statutory, standing, special or interim joint committee of the two houses, may administer oaths or affirmations to witnesses in any proceedings under their examination.