Dear Mr. Wong，
I would like to let you know how much I have enjoyed my last three years at the Hero Company. Hero Company is an invaluable place for enriching my knowledge about financial field， I enjoyed working with my colleagues and I have learned so much things here.
Because I would like to take a new challenge and I want to meet people from all walks of life， I have accepted an offer from an Insurance firm as a Personal Financial Consultant. I would therefore appreciate it if you would accept my resignation effective from 8 March， 20xx.
I would be very much obliged if you would kindly give me a reference letter before I leave. Thank you for all that you have done to make my work here both interesting and enjoyable.
After months of reviewing the outlook for the pany in the wake of this economic downturn， I see no other alternative than to resign my position as chief financial officer with HHH （pany）。 Needless to say， after 12 years of service， this decision was not an easy one。
Please make my resignation effective January 31， which is the end of my scheduled vacation。 I will turn over all pany books and settle my accounts prior to that date。
I look back on the experience gained and the friends made with much regard。 My association with HHH has been a valued part of my life。
Good luck to you in the years to e。
I am offering my resignation as operations manager of the XXX plant， effective May 15. As of now， I’m not quite sure where I’ll be looking for employment and am toying with the idea of turning one of my life-long hobbies into a profit-making enterprise. Frankly， Vernon， I was deeply disappointed the vacancy of general manager was filled by someone from outside the company. Through years of excellent performance appraisals， I was led to believe I was in line for that position. Under the circumstances， I think you’ll understand my decision to resign. I do appreciate the management training I’ve been given here； it has indeed prepared me well for almost any general business career I decide to pursue. My best wishes for the company’s continued growth.