To Whom It May Concern,
This is to certify and confirm that Mr. [Name], has worked with our company from 24th January 2007, until 30th January 2011, as [Position].
During his tenure with us, we have found him to be hardworking and sincere. He is leaving us of his own accord, and we wish him all success in his future endeavors.
For [Company Name]
Designation
16th January 2011
Our Ref: TMC/ADM/110116-19 (we follow a reference number for later tracking purposes) you can opt not to use it.