[Your letterhead, if desired; if not, your return address]
[Date of letter-month, day, and year]
[Recipient's first and last names]
[Street or P.O. box address]
[City, State ZIP code]
Dear [recipient's name]:
With mixed feelings, we announce that two of our company's longtime employees are retiring in June. Jack Wills has worked in the accounting department as manager for 23 years, and Ellen Silver has been an assistant with the IT department for 17 years.
In honor of their service and friendship, we will be holding a retirement party for Jack and Ellen in the cafeteria on September 18 from 2 p.m. to 3 p.m.
Please join us for this celebration as we thank Jack and Ellen and wish them the very best.
[Sender's first and last names]