Dear Sir,
May I take this opportunity to thank you for giving me chance to work with this company for almost 4 years especially the promotion I just received.
As you can see that since the beginning of 2004, SWS Logistics & Marketing (Thailand) Co., Ltd has been growing and expanding the business through so many fields. I found myself not able to get along with the new circumstances and it caused me losing the interest to continue the job. I realize this would reflect to the quality of works I am in charge and definitely effect to everybody I work with.
According to the above reason, I would like to formally inform you to resign from the company and 15 August 2004 will be my last date. I really hope you would understand.
I wish SWS-T continued success, and I want to thank you for allowing me to be a part of your team. Please feel free to contact me at any time if I can be of further assistance in helping with a smooth transition.