Letter to manager about a problem

Dear Mr. Smith I hope this letter finds you well. As you are aware I have recently completed my first month in your esteemed organization. I would like to bring to your attention an issue that has cropped up over the last couple of weeks. As you know, I had taken up this post of part-time Assistant Accountant so that I would be able to return home after lunch and study for my upcoming ACCA Examination. While, I do need the compensation and experience that this role provides to me, my priority over the next two months is towards my examination. Please note that apart from the tasks that you assign to me, Mr. Singh also assigns some of his clerical tasks to me. I have never complained and always try to do my best and complete all the work that has been given to me. However, the tasks from him keep increasing and I was forced to leave the office at 5pm for the whole of last week. As a result, I have not been able to keep up with my study plan. I assure you that I am committed to my job and do aspire to do it to my best ability. As such, I suggest that any work that Mr. Singh wants me to do, should come through you, as you are my manager and so should be aware of my workload. I trust that you will be fair and consider my situation before assigning any work to me. Looking forward to your response on my request Yours faithfully Safeena Lakdawala