Under Massachusetts law, the elements of a claim for tortious interference with a contract are that: • A valid contract exists between the plaintiff and a. Massachusetts business lawyers explain how improperly interfering with someone else's contract can be unlawful and lead to a lawsuit.In Shafir, the Supreme Judicial Court broadened the tort of interference with contracts under Massachusetts law, but not in a way that helps Partners. Wrongful or tortious interference with contracts happens when a thirdparty intentionally causes a contracting party to commit a breach of contract. Breach of contract cases can be complicated, but an experienced Massachusetts contract lawyer can guide you through the process. It's important to note that claims for interference with contractual relations generally don't apply in the employment context in Massachusetts. Proving to a court that a third party intentionally interfered in a business relationship or contract is complicated. Section 24L: Massachusetts Noncompetition Agreement Act. Keywords: Contract, Interference with contractual relations. By Blake Edwards Contract Law.