The offer lands on a Tuesday. Salary is fine, title is fine, and at the bottom sits a line you were not expecting: "Start date: 6 October." Eleven days away. You owe your current employer a notice period, you have a flight booked for mid-October that you paid for in March, and a handover that will take longer than a weekend.
Most people do one of two things. They accept the date and spend six weeks quietly panicking, or go silent for four days while working out what to say. Both are worse than simply asking.
The start date is the safest term in the whole offer
Every other line in an offer costs the employer something they must justify to a third party. More salary means going back to a budget holder. A better title creates comparison problems inside the team. A different start date costs them time, and time is the one thing the hiring side has already half-planned to lose.
Look at what they know before you say a word. They wrote the job ad understanding that employed candidates have notice to serve. Their recruiter asked about your availability on the first call, because it is a standard field on most application forms for exactly this reason - we cover how to answer it in the guide to the notice period question on application forms. And the date printed on your offer is usually a default rather than a decision: the first of a month, the Monday after sign-off cleared, or whatever the HR system proposed.
One more thing people miss: insisting on serving your notice properly shows your next employer how you will leave one day, which reads as a professional trait. For what else is movable here, see the full offer negotiation guide.
Reasons that land well
Notice you owe your current employer. The strongest of the lot: verifiable, not your choice, and flattering to the person opposite you. Notice rules vary by country, contract and seniority, so check what applies to you in the notice periods by country guide before quoting a number you cannot back up.
A holiday already booked and paid for. Say both words. They turn a preference into a sunk cost. Nobody wants to be the manager who made a new hire eat a cancelled flight in week one.
A relocation. A lease, a moving date, sometimes a visa or school places. Slow things employers recognise.
Finishing a named piece of work. "I want to close out the Q4 migration before I leave" is concrete. "I want to leave things tidy" is not.
A medical or family commitment. Give the minimum. "I have a family commitment in early October that I cannot move" is a complete sentence. Volunteering details invites questions you would rather not answer.
Reasons to keep to yourself
You want a break. Entirely reasonable, terrible to say out loud, because it sounds like the energy you will bring on day one. Convert it into a date and skip the reason.
You are waiting on another process. Never say this. Once a hiring manager thinks the delay is about a competing offer, a scheduling question turns into a deadline. If you are juggling processes, there are cleaner ways to use one offer to move another.
Non-urgent admin. Renovations, a car sale, a course you meant to finish. Light next to a role someone spent months filling.
The principle: the date is the ask, the reason is optional support. Strong reason, one sentence. No reason, give a date and a warm tone, then stop talking.
How much delay is actually normal
No universal number, but there is a shape. For an individual contributor, two weeks past whatever notice you owe is unremarkable. For a manager, four to six weeks beyond notice is common. Above that, a start two or three months out surprises nobody and is often assumed before you raise it.
What moves the number is not the length you ask for but what it is anchored to. A date anchored to a contractual notice period is almost always granted, because refusing means asking you to break a commitment you already made. A date anchored to nothing gets negotiated down.
And ask once, with a specific date. "Could we look at 3 November?" has a yes or no answer. "I would need a bit more time, maybe six weeks" invites a counter you will not like.
Timing: after the offer, before you sign
Too early is during interviews, when every constraint you mention is a reason to prefer someone else. Answer availability questions factually, state your notice honestly, but do not negotiate the date of a job you have not been offered.
Right is the moment the offer is verbal or in writing and nothing is signed. This is the only point where the employer has decided they want you and you have not yet given them what they want. Everything you intend to ask should fit in one conversation inside that window.
Too late is after you sign. The date becomes a term you agreed to, and moving it becomes a favour rather than a negotiation.
If you also plan to raise compensation, put it in the same message. A start date alongside one salary question reads as a candidate finalising details. The same two asks two days apart read as someone who keeps finding new demands. Same for a signing bonus, which sometimes becomes the trade when the date cannot move.
Five scripts you can send as they are
Asking for two extra weeks.
Thank you - I am glad to accept. One practical point before I sign: the offer lists 6 October, and I would like to propose 20 October instead. That gives me time to close out my handover properly rather than dropping it on my current team. Does that work on your side?
Protecting a booked holiday.
Before I sign, one thing to flag. I have a holiday booked and paid for from 12 to 23 October, arranged well before this process started. I am happy to start on 6 October and take those dates as unpaid leave, or push my start to 27 October - whichever suits you.
Coordinating with a notice period.
Delighted to accept. On timing: I owe my current employer notice, and if I resign this week my last day is 28 November, so I would propose starting 2 December. If you need me sooner I can ask whether they will release me early, though I would rather not promise that in advance.
When they say they need someone on Monday.
I understand the urgency and want to help rather than stall. Starting Monday is not possible without leaving my current role badly. What I can offer: I will handle the paperwork and onboarding reading this week in my own time, and be in properly from the 20th. If the Monday date is driven by something specific, tell me what it is and I will work around it.
When you would rather not give a reason.
Thanks, I am very happy to accept. Could we set the start date at 3 November rather than 13 October? I have a personal commitment I cannot move in that period. Everything else looks right to me.
Notice what all five share. Acceptance comes first, the request carries a date, there is exactly one ask, and each ends by handing the decision back.
If they say no
A flat no is rarer than people expect, and usually has a real cause: a project start, a fiscal close, an onboarding cohort with fixed dates.
Ask what is driving it. "Is the 6th tied to something specific?" is a fair question, and the answer usually opens a door. If it is a group onboarding session, join remotely. If it is a client kickoff, attend that day and start properly later.
Offer a partial start. Half the value of an early date is having you reachable, not at a desk. A few hours of admin in week one often satisfies the real constraint. And if the date cannot move while the cost falls on you, ask whether that can be recognised elsewhere in the package.
Then read the manner of the refusal. An employer who explains a constraint and looks for a workaround is showing you how they handle friction. One who treats a scheduling question as disloyalty has told you something about the job, worth weighing if you are comparing offers.
Get it in writing
A date that exists only in a phone call is not an agreed date. Reply the same day with one line: "Confirming what we agreed: start date 3 November, everything else per the offer of 24 September." Then check the contract says 3 November before you sign, and that any unpaid leave is written down too. A verbal "sure, take that week" evaporates once the person who said it changes role.
The mistakes that genuinely cost people offers
Going silent. The big one. Four days of no reply while you compose the perfect message does more damage than any request you could have made. Acknowledge within a day: "Thank you - reviewing this properly, back to you Thursday with one question."
Renegotiating after you sign. It reframes you as someone whose agreements are provisional. If something genuinely changed, say exactly what, and apologise once.
Inventing a reason. Fictional weddings and imaginary notice periods get discovered, because references get called and industries are small. A made-up reason turns a routine request into a trust problem.
Stacking it on five other demands. The start date is easy to grant alone. Buried as item four behind salary, title, equity and remote days, it becomes evidence you are difficult.
Asking for open-ended time. "Sometime in November" gives nobody anything to approve. Give a date that fits in a system.
The whole conversation usually fits in two messages. Accept warmly, name one date, give one sentence of reason, confirm in writing. The rare people who lose an offer over this never lose it over the date itself.