The interference was improper. The defendant's business behavior led to a breach of the contract while the plaintiff suffered damages.Tortious interference happens when your competitor tries to break or damage an economic agreement or contract your business has with a third party. The Pennsylvania Supreme Court held that individuals can sue third parties for tortious interference with existing atwill employment relationships. Wrongful or tortious interference with contracts happens when a thirdparty intentionally causes a contracting party to commit a breach of contract. Tortious interference claims arise when another business or person unjustly interferes with the business or contractual relationships of another business. It occurs when someone purposely undermines another's business transactions or injures a business relationship. Under Pennsylvania law, the tort of unfair competition is. Contractual Relationships, 34 ARK. A defendant may be justified or privileged to interfere with contractual or business relationships in certain circumstances.