Integrative, interest-based negotiation can facilitate constructive, positive relationship and establish contracts between parties on a foundation of goodwill. It is important to note it can only facilitate these positive outcomes, it does not guarantee that the other party will not seek to be opportunistic at a later time during the life of the contract. Previous knowledge of the behaviours of the other party regarding honouring contractual and other commitments will be useful here in predicting long-term outcomes, not ensuring that they will not leverage their advantages.