Of course, there are times when the official may have to devote much more time than usual to the execution of the office. Nor is the public official bound to answer to every whim of a ruler. Many public officials often attend social gatherings with heads of state from other nations. In modern times, Max Weber's design for a fair system is very widespread. The president of the United States of America is aided by the Cabinet.
Several agencies comprise the executive branch of government, each one a bureaucracy in itself.
From the Secretary of Defense to the lowliest janitor in the department, a strict set of rules is in place. Procedures delimiting the proper execution of every task within the agency are documented, and updated as necessary. Due to the exacting nature of these elements, bureaucracies exist only in developed capitalist institutions. Though certain political structures of the past used officials with certain duties, many did not fit the following three elements, hence they did not fit the definition of a modern bureaucracy. Every member of the bureaucracy has a specific job that they are supposed to execute.