why disciplinary procedures in organisations?

why disciplinary procedures in organisations? From the perspectives of both an Employer and Employee, outline and discuss why organisations should have disciplinary procedures.
further instructions:
1- Search for Discipline in ACAS website.
2- What is the aim of a discipline procedures from employer’s point of view?.
3- What can the benefits of a discipline procedure be for an employee?.
4- From both employer and employee perspectives. what would the consequences be if there was no discipline procedure?.