Name (Mention the name of the recipient)
Designation (Mention his designation, if applicable)
Company (Mention the name of the company to which he/ she belongs, if applicable)
Address (Mention the complete address of the recipient or the address of the company he belongs to, whichever is applicable)
Date (Write down the date on which this letter is being sent)
Subject: Write down the purpose of writing the letter in one line
Dear Mr. /Ms. /Mrs. Last Name
I am issuing this letter to you as a warning for _________________ [mention the reason for giving warning].
The incident, _______ _________ [mention the details of the incident for which warning is given] that happened _______________ [time when incident took place] was very disappointing. This kind of behavior was least expected from you.
I once again warn you for your behavior and hope this would not be repeated in future.
Thanks and Regards,
Name (Mention the name of the person writing the letter)
Designation (Mention the designation of the person writing the letter, if applicable)
Name of the Organization (if applicable)