"Do you find that one person always ends up contributing more time and effort than the other partner?"

Sometimes, not always. I started a partnership a year ago here in Oz, everything in writing etc. I did my part and the other two dragged their feet, so after a while we re-nogotiated our terms and now I'm very happy doing most of the work.

IMO working relationships change over time and a partnership agreement is just an outline of everyones basic understanding and terms. Business relationships, and duties, evolve so don't hold everyone too tightly to what they agree to.. give some leeway but don't let yourself be taken advantage of either.

"What sort of performance clauses would be reasonable in a contract?"

Here's a free partnership agreement that has all the basic bases covered

I would also work in a non-compete clause. If things go sour while you're in the partnership you don't want them to have the ability to take everything you've done and start their own side venture while in contract with you. :high: