Permanent rulemaking is a formal process required for the permanent adoption, amendment, or repeal of any rule, and is dictated by the Administrative Procedures Act (ORS Chapter 183). This process entails notice to legislators and the public and the opportunity for public comment before any rule action may be made effective.
Temporary rulemaking is a less rigorous process required to temporarily adopt, amend, or repeal a rule in response to an urgent circumstance. Temporary rulemaking is also dictated by the Administrative Procedures Act (ORS Chapter 183) but does not require advance notice to legislators or the public, or an opportunity to comment. All temporary rule actions must include a justification of the circumstances requiring a temporary rule and automatically cease to be effective 180 days after adoption, unless the agency uses the permanent rulemaking process to extend them.
Permanent rules can also expire, or be later amended or repealed, depending on need.