A formal organization is an organization with a set of rules of procedures. It is usually used with simple writing, with a language of rules that leave little confusion for understanding. This is because people need to understand the rules otherwise they might lose employees and possibly reduce the employee expectation.
Sociologist Max Weber designed a model of formal organization known as the "bureaucratic model" that is generally about the rationality of activities through procedures.[1] It is one of the most efficient models for organization.
In some organizations, the rules may be strictly followed, and if someone breaks that rule, they might get warned or fired; while others are be more lenient with it.