What is an Operating Agreement? An operating agreement is a document that outlines the management structure and operating procedures of an LLC.An LLC Operating Agreement is a vital document that outlines the rights, duties, and privileges of all members involved in the LLC. This article discusses the step-by-step process of writing a LLC operating agreement as effortlessly as possible. A California LLC operating agreement is a legal document that governs how an LLC will be managed and describes its internal structure. Bay Oak Law provides comprehensive legal counsel for California companies who are engaged in contract disputes. Discover the differences between articles of organization and an operating agreement so you can better understand these LLC documents. An operating agreement is a basic legal document agreed to when someone forms a limited liability company (LLC). This arrangement was codified in the Investors Operating Agreement and the Manager Operating. Agreement. Operating agreements are not necessarily needed or legally required for setting up or operating an LLC.