when I did it years years ago, my atteronly wrote something like this for my boss to sign (I don't remember the exact words):
This letter is to confirm that XXX has been working with A-Company as a Your-Title since 1/1/1900.
when I did it years years ago, my atteronly wrote something like this for my boss to sign (I don't remember the exact words):
This letter is to confirm that XXX has been working with A-Company as a Your-Title since 1/1/1900.