Which document indicates the division of work within a firm and details lines of authority and communication?

The organizational chart is the correct answer because it visually represents the structure of an organization, illustrating how tasks and responsibilities are divided among various roles and departments. It clearly outlines the hierarchy within the company, displaying lines of authority and reporting relationships. This allows employees to understand who they report to and how their work fits into the broader organizational framework.

In contrast, an employee handbook serves as a guide for employees regarding the policies, procedures, and rules within the company, but it does not specifically depict the structure or division of work. A job description provides detailed information about a specific position, including responsibilities and requirements, but it doesn't illustrate the overall hierarchy or lines of communication within the organization. Company policy encompasses the guidelines and principles that govern how a company operates but also lacks a visual representation of the organization's structure. Thus, the organizational chart is the essential document that captures the division of work and authority within the firm.