An Oregon single-member LLC operating agreement sets out the ownership and policies that will govern a limited liability company that has one (1) sole member. This document is usually drafted around the same time the Articles of Organization are filed with the Secretary of State to register the LLC. However, the agreement is not filed with the state and is not technically required by law. A significant benefit of executing an LLC operating agreement is that it provides the member with liability protection for their personal assets and income gained through the business.