Well, I have never done individual negotiating before. Or rather, I did and did it very badly. But I can tell you that in my union job, the company will hire temporary employees in the same classification, with no benefits, and pay them 20% above the permanent full time employees. Full time employees get a traditional pension plan, and very good medical benefits at a relatively small cost.

What sounds tempting in your position is to ask for a little piece of the company, shares or some other arrangement.

Women are known to be really bad at this kind of negotiation. Think of what you consider reasonable, then ask for more. That's what men do, I have been told.