I am writing to inform you that I will be resigning from my position as Executive Secretary at Company Name effective four days from today, Friday, September 19, 2014. I regret to have to provide such a short notice resignation; however, personal circumstances beyond my control require me to leave my employment rather immediately. I truly regret any inconvenience my lack of notice may cause you or my coworkers and will work hard to ensure that my exit is as smooth as possible.
I have already informed my immediate co-workers and supervisor of my intention to leave at the end of this week. I will complete the remaining projects on which I am currently working, and my other duties will likely be taken over by the remaining secretarial staff until a replacement is hired for my position. Please contact me by phone at 000-000-0000 or through email at email@example.com if you need to discuss any issues with me.
I have enjoyed my time here at Company Name and have learned a great deal. Thank you to you and the staff for creating such a positive work environment. I wish you all well.