Common courtesy, basic manners, and omitting negative emotional outbursts are the bare minimum in my opinion. I believe that neatness, punctuality, and being relatively organized are icing on the cake and make a person appear more professional but aren't quite as crucial.
One should be able to expect a lack of verbally or physically violent outbursts. I get somewhat emotional when I am PMSing. It only comes out as a little louder voice, shortness, and some irritation. I don't NORMALLY throw things, yell, or cry much unless I've had a very bad long day, feel miserable and I'm at HOME. Poor hubby and kid

what they put up with.
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"Always learn the rules so that you can break them properly." Dalai Lama
My Karma just ran over your Dogma.