Definition: Blue-books, also known as "blueprints," are a type of legal document that outlines the procedures and rules for conducting business in a specific industry or sector. They typically serve as a guide to ensure that businesses comply with regulations, standards, and guidelines set forth by relevant laws, organizations, or regulatory bodies. In the context of business law, bluebooks can be used as a reference tool for companies to understand their obligations under various legal frameworks, such as labor and employment laws, environmental protection regulations