Match the date to about 21 days, outline handover priorities, and confirm if your manager wants a different end date.
How to use this three weeks notice letter
Tell your manager first when you can, then send written notice the same day. Put a calendar last day in the letter—not only “in two weeks.” Keep the reason short; this page is for a three weeks notice letter, so stay on that intent and link out for tones or notice length.
The samples below are starting points, not scripts. Swap names, title, company, and last day. If your situation is sensitive (health, harassment, legal risk), keep the letter factual and use HR or counsel for details that should not live in email.
Three weeks notice letter sample
Dear Alex Rivera,
Please accept this letter as formal notice of my resignation from my position as Marketing Coordinator at Acme Inc. My last working day will be October 3, 2026.
Please accept this letter as three weeks’ notice of my resignation.
My last working day will be October 3, 2026. I appreciate my time at Acme Inc and will use the notice period to complete a thorough handover.
Sincerely,
Jordan Lee
Email version
Subject: Resignation — Jordan Lee
Hi Alex Rivera,
Please accept this email as my formal resignation from my position at Acme Inc. My last day will be October 3, 2026.
Match the date to about 21 days, outline handover priorities, and confirm if your manager wants a different end date.
I am happy to help with a smooth transition before I leave. Thank you for the opportunity to work here.
Best regards,
Jordan Lee
Marketing Coordinator
Confirm with manager if they want a different end date
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Open-ended notice
Mixing up with two-week templates without editing the date
Want to fill fields interactively? Use the resignation letter generator, then adjust the reason line to match this situation.
Three weeks notice letter FAQ
What should a three weeks notice letter include?
State that you are resigning, include your job title and company, give an exact last working day, keep any reason brief (or omit it), thank them optionally, and offer a handover. Match the date to about 21 days, outline handover priorities, and confirm if your manager wants a different end date..
How much detail should I give in a three weeks notice letter?
Keep it brief. A single line such as “Please accept this letter as three weeks’ notice of my resignation.” is enough — you do not need to justify the decision or share private specifics. Save anything sensitive for a conversation with HR.
Can I send this as an email?
Yes. Paste the body into an email with a clear subject line, or use our resignation email templates.
Is this legal advice?
No. These templates are general information for US workers, not legal advice. Check your contract and local rules.