If a third party unfairly interferes with a business contract or relationship and causes damage, a tortious interference claim may be a viable option. Given these facts, St. Francis likely liable for wrongful interference with a contractual relationship.Wrongful interference with a contractual relationship occurs when:1) A valid and enforceable contract exists between two parties. Wrongful interference with a contractual relationship requires that there is a valid contract between two parties, a third party who knows the contract exists. It would seem that my coworker is guilty of either "Inducing Breach of Contract" or "Intentional Interference With Contractual Relations". Contrast this with Intentional interference with existing contract. Stranger claims a social or economic interest in the contractual relationship. It does not need to be a contractual relationship with an existing contract. But prior business dealings are required. 3. The first, under tort law, is against the third party who interfered with the business relationship.