You have used excessive vacation and sick hours in the last (number) months. I am concerned about your frequent absence from the office. Many times, your absences are not planned. When this happens, the rest of the staff is inconvenienced and others have to make up the...
Dear (recipient's name),
You have used excessive vacation and sick hours in the last (number) months. I am concerned about your frequent absence from the office. Many times, your absences are not planned. When this happens, the rest of the staff is inconvenienced and others have to make up the slack for you.
Please make every effort to be to work on a consistent basis. I understand emergencies come up, but your absences have become excessive.
Sincerely,
(your name)