An intentional interference with a prospective business relationship is not actionable unless the interference is improper. Defendants' next argument is that no cause of action will lie for tortious interference with an employment contract where such a contract is terminable at will.The law allows certain thirdparty interference in business relationships, so long as lines are not crossed. Wrongful or tortious interference with contracts happens when a thirdparty intentionally causes a contracting party to commit a breach of contract. For example, suppose that Plaintiff has a supply contract with X to supply shirts made in the USA. In WA, atwill employees do not have a business expectancy in continued employment, and, thus, cannot pursue this tort based on termination. Can I sue for defamation (and tortious interference with my business) when they spread lies and incite others to harass me? The general rule is to avoid strictly any conflict of interest or even the appearance of a conflict of interest in Government-contractor relationships. Vizant filed a suit in a federal district court against her, alleging wrongful interference with a business relationship. To the defendant, ProServ, in a diversity suit in which one sports agency has charged another with tortious interference with a business relationship and.