Hi, Just sharing a template. You need to edit it as per your requirement. I'm not sure of your Marketing Department size and also the seniority level of the person heading the department. In any case, before issuing the letter, please discuss with the Marketing Head what is expected from him/her before issuing the letter.
Template
Dear _____,
On an interim review of your Marketing Department's performance, we would like to bring to your notice that your performance as the Head of Marketing has drastically fallen far below the expected level of the Management. We didn’t expect this from a Senior Employee like you.
We are of the opinion that your plan of action, efforts, and intentions towards achieving the desired target have not been manifested rightly, thereby the desired result is not achieved. As you are well aware, the monthly/yearly sales target for the Marketing Department was determined during the sales meeting we had with you based on your confirmation and also considering the current market scope. Also, your Department is equipped with all necessary infrastructure and experienced sales personnel in place. It is appalling to note that in spite of the above, the desired numbers were not achieved.
Please note that your sales target fulfillment has been running below __% for the last __ months. We sincerely hope that in the coming months, you will endeavor to strive hard to achieve the desired sales performance. We are always with you to offer necessary support wherever required to strengthen the Sales Team.
We hope you will take this advisory letter in the right spirit and will surge ahead with new vigor.
Please sign the copy of this letter.