My son-in-law and a employee of his bought a house and flip it they wanted me to rewire the house for them the agreement was they would reroof my house labor only when the time came to reroof my house the only person that would help is my son-in-law the other party refused to help we had nothing in writing it was verbal but I have several persons that know that this was the deal,Do I have the right to a case for his half of the labor?