Wrongful interference with your job in Tallahassee, FL? Cruz Law Firm handles tortious interference cases, and defend your rights.The burden to defeat the privilege then shifts to the party that brought the tortious interference claim to show improper means were employed. Under Florida law, the elements of a claim for tortious interference with contract are that: • A valid contract exists between the plaintiff and a third. Tortious interference with a business relationship is a legal claim that arises when one party intentionally disrupts another party's relationship. Four Necessary Elements to Prove Tortious Interference with an Existing Contract. However, a defendant who raises this affirmative defense is charged with proving that it did not employ an improper or wrongful method (means). But for many business owners, tortious interference with contracts can be confusing, because it borders on legitimate competitive activity. One of the most common civil causes of action in Florida concerning unfair competition is tortious interference. March 2, 2009. Blogs.