What is a sample of a formal letter?
Resignation, application and invitations are some of the examples of a formal letter. These are commonly written with formal template and layout.
Dear Mr. or Ms. (Name of Boss), Please accept this letter as a formal notice that I was unable to attend work on (dated) because of (reason for absence). Thank you, (your name). If you have a medical note from a doctor stating that you should miss work, make a copy of this and present it with the letter.