Check three things first
Your notice period. It is in your contract. Count the days so you can say your last date without working it out on the call.
Whether notice has to be in writing. Many contracts say so. Have the letter or email drafted and send it as soon as you hang up.
What you will say to a counter-offer. Decide before the call. Deciding during it is how people end up staying another year by accident.
Then ask for the call. Keep the request neutral.
"Do you have ten minutes today? There's something I'd like to tell you directly."
The order
Decision, date, thanks, handover. Each is one sentence.
"Thanks for taking the call. I've decided to leave, and I wanted you to hear it from me first."
"My notice period is four weeks, so my last day would be the 12th."
"I've learned a lot here, and I'm grateful for it."
"I'd like to make the handover easy. I'll write up where everything stands this week."
You do not owe a reason. If you want to give one, keep it to a sentence and keep it about where you are going.
What you will hear
"Is there anything we can do to keep you?" If the answer is no, say so kindly and once.
"I appreciate that. My decision is made."
"Where are you going?" You can say, and you do not have to.
"I'd rather keep that to myself for now. I'll share it when I've started."
"Can you stay a bit longer?" Offer a thorough handover in place of extra weeks.
"I can't move the date. I'll make sure everything is documented before I go."
Disappointment, or anger. It is about the timing, and it passes.
"I understand the timing is hard. I'll do what I can in the next four weeks."
"Let's keep this between us for now." Reasonable for a few days. Agree on how long.
"That's fine. Shall we agree to tell the team by Friday?"
After the call
Send the written notice the same day, with your last date in it. Agree who tells the team and when. Then keep doing the job well for the weeks you have left, because a reference is written about the last month as much as the first three years.
Rehearse it
The first sentence is the hard one, and people often bury it under two minutes of small talk. Practice until "I've decided to leave" comes out in the first ten seconds.
In murmur, the hand in your notice call lets you try it on a manager who makes a counter-offer. If you are also turning down another offer, decline a job offer is a short one worth running first.
Updated 11 November 2026.
Questions
Can I resign over the phone?
You can tell your manager by phone, and for remote work it is the usual way. Check your contract first: many require notice in writing, so send the letter or email straight after the call.
How long should a resignation call be?
A few minutes. Say the decision, the date and your thanks, then offer a handover. The details can go in writing.