An employee behavior warning letter is a document that an employer issues to notify an employee that they violated company policy. The purpose of a warning letter is to inform the employee of their unacceptable conduct, poor performance, or behavior, and also the consequences of their actions

The employee’s direct supervisor should issue the verbal warning and is best accompanied by an informal performance management process. The aim is for performance improvement, so an informal performance management process allows a supervisor to inform their subordinate of the performance gap, and ways to correct it.

When writing an employee warning letter, you can use the following structure: state the date of the warning, the subject of the warning letter, name of the employee, section with the details of the violation, reasons why this situation is considered a violation, disciplinary actions that the company will take, and place your signature.