Dear …
RE: Warning - Habitually Late With Reports
Further to previous verbal discussions __(I/we)__ have had with you regarding your habitual late __(weekly/monthly/etc.)__ reports, this letter is your official written warning, advising you that __(I/we/Name of company)__ will no longer tolerate late reports from you.
Let __(me/us)__ remind you one final time that your __(monthly/weekly/etc.)__ reports are due on or before the __(example: last day of the preceding month)__. In the future, your failure to comply with this reporting schedule will result in __(disciplinary action/your immediate dismissal/termination/etc)__.
Yours truly,
__(signature)__
__(Your name)__
X__________________________ Date:___________________
__(Employee’s Name)__ - Signature