The textbook states that all organizational structures include the division of labor and coordination of that labor.What do these mean and how does departmentalization contribute to these fundamental requirements?

Division of labor refers to the subdivision of work into separate jobs assigned to different people.Subdivided work leads to job specialization, because each job now includes a narrow subset of the tasks necessary to complete the product or service.As soon as people divide work among themselves, coordinating mechanisms are needed to ensure that everyone works in concert.
Departmentalization plays a significant role in the division of labor and coordination of that labor.With respect to division of labor, departmentalization organizes employees into groups based on some delineating factor, such as skill (functional structure), client or geographic focus (divisionalization), or work process (e.g.matrix or team-based structure).For example, a functional structure would necessarily divide employees into skills, so some employees manufacture the product whereas others market the product, manage the accounts, deliver the product, and so on.The categories of departments establish the division of labor.Departmentalization also provides some information about the coordination of work.For example, a team-based structure would rely more on informal communication than would a typical functional structure.