Centralizationl of Organization:

Organizations with a centralized structure have several layers of management that control the company by maintaining a high level of authority, which is the power to make decisions concerning business activities. With a centralized structure, line-and-staff employees have limited authority to carry something out without prior approval. This organizational structure tends to focus on top-down management, whereby executives at the top communicate by telling middle managers, who then tell first-level managers, who then tell the staff what to do and how to do it. Since this organizational structure tends to be fairly bureaucratic, employees have little freedom. Centralized organizations are known for decreased span of control—a limited number of employees report to a manager, who then reports to the next management level, and so on up the ladder to the CEO
 
Decentralization:

Because individual creativity can be stifled and management costs can be greater in a centralized organization, many organizations continue to downsize into a more decentralized structure. Decentralization seeks to eliminate the unnecessary levels of management and to place authority in the hands of first-line managers and staff— thus increasing the span of control, with more employees reporting to one manager. Because more employees are reporting to a single manager than before, the managers are forced to delegate more work and to hold the employees more accountable. Downsizing has also helped to change the flow of communication, so that top management hears staff concerns and complaints in a more direct manner and management has a more hands-on approach. The hands-on approach involves less bureaucracy, which means there is a faster response to situations that demand immediate attention. This structure also takes advantage of bottom-up communication, with staff issues being addressed in a timely manner.

The restructuring generally takes place at the mid-management level. Because some middle managers have lost their jobs, been laid off, or simply taken advantage of early retirement and severance packages, their positions have been phased out, thus helping to reduce unnecessary costly salaries and increasing employee span of control. Many middle managers who stayed in their current "positions" found that their jobs have changed to being coaches, or team leaders, who allow their employees greater freedom in completing their work responsibilities. The chain of command is the protocol used for communication within organizations. It provides a clear picture of who reports to whom. Quick decisions can be made in decentralized organizations because approval usually has to come only from the manager one level higher than the person making the decision. The chain of command involves line-and-staff employees, where the staff's job is completing the actual work and the line functions to oversee the staff.

 
Departmentalization:

Organizations can be divided into various departments, or units, with individuals who specialize in a given area, such as marketing, finance, sales, and so forth. Having each unit perform specialized jobs is known as departmentalization. Departmentalization is done according to five major categories:
(1) product, which requires each department to be responsible for the product being manufactured.
(2) geographic, which divides the organization based on the location of stores and offices.
(3) customer, which separates departments by customer type—for example, textbook companies that cater to both       grade schools and community colleges.
(4) functional, which breaks departments into specialty areas.
(5) process, which creates departments responsible for various steps in the production process.
 
 
 

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