Legal Definition of Office: (a) A place where business is transacted; a place where someone practices a profession. (b) A position held by an officer. (The presidential office is held by the President.) | Learn about the legal concept of office and its importance for business owners. Discover how an office can be defined as a physical location for business activities or as a specific role within an organization. Complying with the legal definition of office ensures legal compliance, professionalism, and organizational efficiency. Find out how this understanding can benefit your business and contribute to long-term success