I have always respected the attorneys that draft and negotiate commercial agreements. In the last while, I've been doing a bunch of that myself and so have increased my understanding of the joy and difficulties they face.
The basics of the job include working with one or more groups of other attorneys from other companies to negotiate and draft an agreement to reflect the terms of a commercial deal. It can be as simple as I will give you X number of widgets for Y amount of dollars or as complex as hundreds of pages attempting to deal with all sorts of contingencies. These deals are then used by companies to figure out what they should do, for example pay $Y when X widgets are delivered, and, extremely rarely, they are used by courts to figure out whether a company has wronged another by violating the contract.