Legal Definition of Necessity: A situation in which one is forced to do something. Someone who has had no chance but to act in a certain unlawful manner may be excused from this behavior if necessity was the cause of carrying out the act | Understanding the Legal Definition of Necessity: Learn how necessity can excuse certain actions in a business context and explore real-life examples where this defense has been successful. Find out why understanding this concept is crucial for business owners to make informed decisions in extraordinary situations. However, be aware that the defense of necessity does not guarantee an escape from legal consequences. Consult with legal professionals for guidance in your specific situation