Oregon Revised Statutes (ORSs)
Statutes are laws passed by the legislature. The Office of the Legislative Counsel edits, publishes, sells and distributes the Oregon Revised Statutes.
Oregon Administrative Rules (OARs)
State agencies are authorized by the legislature to adopt administrative rules. The Oregon Attorney General's Administrative Law Manual defines "rule" to include "directives, standards, regulations or statements of general applicability that implement, interpret or prescribe law or policy or describe the agency's procedure or practice requirements."
from: http://www.ous.edu/dept/cont-div/policyorsoar