Formal organizations and bureaucracies are rational, rules-based structures designed to achieve explicit goals efficiently. Bureaucracy refers specifically to organizations with clear hierarchies, division of labor, impersonal roles, and emphasis on written rules and records. While effective for their goals, formal structures can also lead to alienation among workers and goal displacement over time. The "Iron Law of Oligarchy" holds that organizations tend to become dominated by a small, self-perpetuating elite, distant from regular members. To counter these issues, some advocate for more humanizing work environments that distribute power evenly and use work teams.