Pick by the position you are actually in, not by the tone you feel like using. The bracketed parts are the only ones that should change.
Immediate resignation
Use when you have decided to leave now and are not asking for anything.
Subject: Resignation — [Your name]
Dear [Manager’s name],
I am resigning from my position as [job title] at [company], with immediate effect from today, [date].
I understand that my employment agreement provides for a notice period of [length], and that I am not serving it. I am willing to discuss the practical consequences of that, and to help with a handover remotely over the next [number] days.
Please confirm receipt of this letter, and let me know how you would like company property returned and the final settlement handled.
[Your name]
[Date]
The second paragraph is deliberate. Acknowledging the notice period does not concede anything you do not already owe, and offering a remote handover removes the complaint employers press hardest.
Resignation with a request to shorten the notice
Use first, in almost every case. This is the message that gets a waiver.
Subject: Resignation and request for early release — [Your name]
Dear [Manager’s name],
I am resigning from my position as [job title] at [company]. My notice period is [length], which would take my last working day to [full notice end date].
I would like to ask whether the company would agree to release me earlier, with a last working day of [requested date]. To make that workable I would [specific handover commitment — for example: complete the [project] documentation, hand over [system] access and brief [colleague], and remain reachable by email for [period] afterwards].
If an earlier release is not possible, please treat this as notice served from today, [date], and I will work through to [full notice end date].
Please confirm in writing which of the two applies.
[Your name]
[Date]
The final paragraph matters more than the request. It means the notice has started running whichever way the answer goes, so a slow reply does not cost you time.
Offering to buy out the notice period
Use only after a waiver has been asked for and refused.
Subject: Resignation and proposal for payment in lieu of notice — [Your name]
Dear [Manager’s name],
Further to my resignation of [date], I understand the company is not able to waive the remainder of my notice period, which runs to [notice end date].
I would like to propose an alternative: that I finish on [requested date], and that the balance of [number] unserved days is settled by [deduction from my final settlement / payment of [amount]], calculated at my basic salary rate.
If that is acceptable, please confirm the figure and the mechanism in writing, along with my revised last working day, before it is applied.
[Your name]
[Date]
Naming the basis of the calculation — basic salary, not total cost of employment — is what stops the figure arriving larger than expected. Ask for the number before it is deducted, not after.
Resignation on health grounds
Use when health is the reason and you do not want it discussed.
Subject: Resignation — [Your name]
Dear [Manager’s name],
I am resigning from my position as [job title] at [company] for health reasons, with a last working day of [date].
I am not able to serve the full notice period of [length]. I am willing to provide medical documentation to HR if that is required, and to help with a written handover.
Please confirm receipt, and let me know what the company needs from me.
[Your name]
[Date]
Say “health reasons” and stop. You are not obliged to describe a condition to your manager, and detail volunteered here tends to travel further inside a company than people expect. If you have not yet spoken to a doctor, do that before sending this — being signed off may leave you better placed than resigning does.