A tortious interference lawsuit allows you to sue the noncontracting person and recover damages for intentional or negligent acts that caused economic harm. If a third party unfairly interferes with a business contract or relationship and causes damage, a tortious interference claim may be a viable option.Both California contract law and tort law allow for legal action when a third party wrongfully interferes with a contract or ongoing business relationship. Wrongful interference with a contractual relationship requires that there is a valid contract between two parties, a third party who knows the contract exists. Michael Todisco was promoted to partner of Hueston Hennigan LLP in Los Angeles. Movement through the range is defined in the Alameda County Salary Ordinance. The information you are trying to access is restricted to subscribers and requires a valid login. Please enter your e-mail address and password below.