A patron recently asked what something meant. They were pointing at a series of numbers and abbreviations at the end of a statute. It looked like this “[1957 c.448 §1; 1981 c.88 §2; 1983 c.330 §1; 1993 c.741 §110; 1993 c.796 §1; 2001 c.403 §1]” (ORS 776.015). I told them that is the history of the law.
When the legislature passes a law, it starts as a bill. That bill has a number, like HB 2001 or SB 101. That tells us if it’s a House Bill (HB) or Senate Bill (SB). Those bills that are approved by both houses and signed by the Governor become a session law. Those session laws are compiled after each legislative session. Those compilations are titled Oregon Laws.
The Oregon Revised Statutes are a compilation of all the session laws passed by the legislature that are currently in effect. To make it easier to find a law, they are organized by subject. But each statute has a list of the session laws that have impacted it, in brackets. That is the text our patron was asking about.