Nov, I would suggest that you have a nice, long chat with whoever issues your license, as specific rules vary from place to place.
Otherwise, there is a serious problem with your putting your license on the line for someone else. You would likely be exposed to liability for ever wire-nut used by any and all employees of the concern, responsible for all parts purchased, etc.
You're thinking of some sort of partnership, or joint operation? Again, it is time for you to sit down with a lawyer, and an accountant, and see how best to structure things so you don't get caught holding the bag.
Look at it this way: would the other guy accept letting YOU use HIS license?
