Date: dd/mm/yy
Name of the authority….
Company name…
Address…..
Dear Sir,
With due respect to say that, It is with great sorrow that I am hereby tendering my resignation to you.
Although there is certainly much to say, I think the reasons leading to the decision are known by simply you, and I will as a result leave them unsaid currently.
I appreciate having had the chance of being a member of (name of company) for (number of) years and offer my best wishes for the continued success.
Sincerely yours,
Name….
Signature…..