You have until the date the employer gives you, and no rule sets that date. If nobody gave you one, ask for it in your first reply. If you need more time, ask for a date and name the one thing you need to find out before then. If you can't name it, don't assume more days solve the problem. The work may be deciding with what you already have.
How long you have
The deadline is the date in the offer letter or in the recruiter's message. Ask "When do you need to hear back?" as soon as the offer arrives, and get the date, the time, and the time zone in writing. If no date was given, ask for one.
Many guides give a number of days, and the ones we read don't show data behind it. The one named source we found is NACE, the association of college career centers and employers. Its advisory opinion on offer deadlines calls one to two weeks common and says giving less "can constitute undue pressure on applicants." It also declines to set a fixed period, and it is written for campus hiring. We couldn't find an equivalent standard for experienced hires, so your date is whatever this employer decided.
A very short deadline has a name, the exploding offer. Harvard's Program on Negotiation describes it as an offer with a very tight time limit, often used to avoid becoming a fallback option while a candidate weighs others. The sections below cover it too.
Is it OK to ask for more time?
Yes. NACE tells employers to be open to reasonable requests for additional time, and tells career centers to prepare students for the chance that an employer says no anyway. LegalClarity adds that asking for an extension doesn't reject the offer, and that the employer isn't obliged to grant it.
We found no data on how often employers grant these requests. Guides that say a request rarely costs you the offer don't show any either. Treat it as a fair ask with an uncertain answer, and ask before the deadline rather than waiting until it arrives.
Name what the extra time is for
Most requests for more time say "I'd like to think it over." You can think tonight without anyone's permission. Extra days are worth asking for when they buy a fact you don't have yet, and a request that names the fact gives the employer something specific to agree to.
Sort what you're waiting for into three kinds.
A fact the company holds. The scope in writing, the benefits summary, the equity terms, a conversation with the person you'd report to or with someone who'd sit next to you. Ask for that directly and let the date follow. "Could I talk with Maria about how the team's work is split, and see the written terms? I can answer by Wednesday." It costs them a call and an email, and it reads as what it is, a candidate doing homework. Harvard's Program on Negotiation suggests a similar move for exploding offers, such as asking to meet HR about the health-insurance details, as a way to extend the decision without signaling disinterest.
A fact someone else holds. Another company's decision, a partner's job search, a visa, a move. The date belongs to them, so get it first. If it's another company, ask where its process stands and when it can decide. Two offers with different deadlines covers that case, including what to tell the second company. Then ask this employer for a date that fits, and say plainly that you're finishing another process. You don't need to name it.
No fact at all. You have what you need, and what's pulling at you is a feeling, or a comparison you haven't written down. More days will run the same loop again. Ask the question below. If the honest answer is nothing, spend the evening on the decision itself. Compare where a yes and a no each leave you in a year and a half, and which mistake you could recover from.
Before every request, ask what you'll know on the new date that you don't know today. The answer also sets how much time to ask for. If you need something from the company, ask when they can provide it. If you're waiting on another process, find out when that process can actually decide.
Ask for a date, give the reason, ask once
- Acknowledge the offer promptly. Thank them, say you're interested, and say you'll answer by a date.
- Ask the person who made the offer. A short call first can work if you've built rapport, followed by a written note so the date exists in writing.
- Propose a date and time. "A bit more time" makes them do the calendar work. A date lets them plan around it.
- Give one reason, in one sentence. Use the fact you named.
- Get the new date confirmed in a reply.
- Ask once. Wellfound's advice on exploding offers is to set a realistic length and stick to it, and it calls a string of "a few more days" requests a bad look.
An example you can adapt:
Thank you again for the offer. I'm excited about the role and want to give you a real answer. Before I decide, I'd like to talk with [manager's name] about the scope and see the benefits summary in writing. Could I have until [day, date, time zone] to respond? I can speak with [manager's name] any day this week.
What the date tells you
A deadline has an owner and a reason. Sometimes the reason is real, such as a start date tied to a training class or a budget that closes. Sometimes it's a closing tactic. Harvard's Program on Negotiation says employers sometimes set short deadlines because they're desperate to fill a role, and some use them to reduce competition from other employers.
You can ask which it is. Wellfound suggests asking whether there's a particular reason for the length of the expiration window. A concrete answer ("the class starts on the 14th") is a constraint you can plan around. A vague answer, or pressure that grows as the date gets closer, tells you something about the company, and you can weigh it against what you saw in the interviews.
If the deadline is very short, the same approach applies. Name the fact you need, ask for a date, and ask once. Wellfound calls any offer that expires in under a week an exploding offer, and LegalClarity says these are not illegal. The company can still say no, so decide before you ask what you'd do then.
If they say no
The original date stands, and LegalClarity's explainer says that letting it pass without an answer means the offer expires.
What the no tells you depends on what you asked. A no to "more time" says the date is firm, and a real start date can force that. If they won't let you speak with your future manager before you commit, ask why. Is there a concrete constraint, or are they unwilling to give you access to information you consider important? The answer belongs in the decision too.
Then ask for what's still possible. "I understand the date. Could I have that call with Maria today or tomorrow?" If they grant it, you've kept part of what you wanted.
After that, you're deciding with the fact still missing, so treat it as a risk. Write down the worst version of what you don't know, and ask whether you could live with it. The accept-or-decline post covers the decision itself. If the missing fact is a term that could be changed or written into the offer, how to negotiate a job offer covers that conversation.
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FAQ
How long do I have to accept a job offer?
Until the date the employer gives you, and no universal rule sets it. If nobody gave a date, ask for one in your first reply. NACE, the career-services association, says one to two weeks is a common offer deadline in campus hiring.
Is it OK to ask for time to think about a job offer?
Yes. NACE tells employers to be open to reasonable requests for more time. Ask for a specific date and say what you need to learn by then, such as a call with your future manager or the benefits terms in writing.
How do I ask for more time on a job offer?
Thank them, confirm the current deadline, and ask the person who made the offer for a specific new date. Give one reason in a sentence, ask once, and get the new date confirmed in a reply.
What if the employer says no to more time?
The original date stands. Ask whether part of what you needed is still possible, like the call with your future manager, then decide with what you have. Name the missing fact and ask whether you could live with its worst version.
QuickInsight is informational only. It is not legal, financial, or other regulated advice. For questions about a signed offer or an employment contract, talk to an employment lawyer.