[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]:
I am writing to you today to discuss some aspects about my job that have become unbearable in recent weeks. Most notably, Darrin's behavior in the office has been extremely uncomfortable and unpleasant. He has been unreasonably critical about my work, he has harassed me about my appearance, and overall his attitude is immature and inconsiderate.
I know other employees feel the same way about Darrin, because they too have expressed their discomfort. Please contact me as soon as possible to let me know how this challenging situation can be resolved. I would be happy to set up a time to meet with you in person. Thank you very much for your prompt attention to this important issue.
[Sender's first and last names]