Some organizations utilize the three-tier organizational structure. The structure of an efficient organization allows oversight of the various components within. To that end, a three-tier structure has some distinct advantages. In a three-tier organization, communication usually flows from the top down, with little direct communication from the bottom tier to the top tier.
The top tier can be an individual, as with the pope in the Roman Catholic Church, or it can be a group, such as a board of directors. The top tier tends to issue orders or directives.
The second tier serves as liaison between the top tier and the bottom tier. In most cases, the second tier consists of managers. It monitors the progress of execution of the orders or directives that come from the top tier.
The bottom tier usually consists of workers. In any organization, the wider the base of the bottom tier, the more solid a foundation the organization. The bottom tier follows through on any orders or directives set forth by the top tier.