This paper argues that T.M. Scanlon’s contractualism can provide a solution to the non-identity problem. It first argues that there is no reason not to include future people in the realm of those to whom we owe justification, but that merely possible people are not included. It then goes on to argue that a person could reasonably reject a principle that left them with a barely worth living life even though that principle caused them to exist, and that current people could not justify creating people with barely worth living lives on the grounds that it caused those people to exist.