Compared to a lot of jobs, there aren't many strict requirements for state legislators. There are a lot of things any legislator worth respecting should do, from attending regularly floor and committee sessions to working with constituents and researching legislation at hand. But, item by item, not many of these things are absolutely required, at least not all the time. Meetings can be missed (and, since conflicts develop, sometimes have to be). No lawmaker can become expert on all legislation. On most of these things, you're talking matters of degree.
In the Oregon Legislature, one of the few things the rules say you must do, if you are a legislator, is this: If you are on the floor and a vote is called, you have to vote.
We (along with others) noted just a few days ago a case of a legislator who opted not to vote. The bill in question concerned a cigarette tax increase, and the legislator who said from the floor, "Mr. Speaker, I am not going to vote on this issue," was Representative John Lim, R-Gresham. Speaker Jeff Merkley advised him that he had to vote; Lim said he would vote later. Which, according to the rules, he also wasn't allowed to do.
Merkley seems to have had time to think this over, and now he has a proposal. The Salem Statesman-Journal's legislative blog is reporting that Merkley is proposing an amendment in House rules to impose a $5,000 fine on any legislator who refuses to vote when on the House floor. "At that rate, lawmakers would plow through their entire salary after four violations," the blog noted.
You wouldn't think this would be necessary. Evidently, however.