An LLC Operating Agreement is a 10- to 20-page contractual document that sets out guidelines and rules for an LLC. Read on to learn more about what you should include in your LLC operating agreement. Key Findings: Company agreements and articles of association define both the ownership of the company and the structure of the company. There are 2 main documents that are important for SAZs and companies when setting up. The first is the incorporation document, either the articles of incorporation (for a corporation) or the instrument of incorporation (for an LLC). The second important document is the internal governance document of the company, either the articles of association (for companies) or the enterprise contract (for SAUB), which defines the basic operating procedures of the company. .