A former co-worker of mine has started an LLC that is owned 100% by him. He has asked me to assist him in market research / analysis and sales, based on the theory that I will come on board and be compensated eventually, once accounts are landed and revenue starts coming in. I immediately asked for a share of the business and / or a written agreement of compensation that I will be awarded at the time the company begins landing customers and bringing in sales. His initial comment is that "There is no reason to have that conversation until we know that we have a market." My response is that I run the risk of working for free if the concept fails, if he decides to break off on his own, if he decides to sell the idea, etc. The list goes on...
I feel like I know this business owner well enough to take him on his word and a hand shake, but I don't feel like trust alone is anything to hedge my labor and ideas on. Have others been in this same or similar predicament? What is the best way for me to approach this situation without insinuating mistrust? Also, are there any examples of documents out there that I could have him sign that would legally bind that I get compensated appropriately for my efforts?
There is a chance of me partnering with him on this, which will change the stakes dramatically in my favor with regard to compensation. But, if I don't partner, and I remain as an employee with the expectation of back-compensation down the road, how can I best protect myself?