Respected Sir ,
Having tried very earnestly to fit myself for advancement in your service , I now beg to be considered worthy for an increment in my salary and promotion as well . In support of my request , I beg to point out the following facts :
I shall be much obliged if my case is given sympathetic consideration and I am given the required promotion . Promotion is , after all , the best incentive to harder work and greater diligence .
I hope for a favourable reply from you at your earliest convenience .
Yours faithfully ,