How Do You Ask for a Deadline Extension in Korean at Work?

How Do You Ask for a Deadline Extension in Korean at Work?

It’s Tuesday afternoon, the report is due Wednesday, and you already know it isn’t going to happen. The numbers from another team only arrived this morning. You open the chat to your manager, type 늦어질 것 같아요, and hover over send.

That line is honest, but it hands your manager a problem with no shape. Late by an hour? By a week? What happens to Thursday’s meeting?

Today you’ll learn how to ask for more time in Korean in a way that’s easy to say yes to: say it early, bring a specific new date, and offer something you can hand over now.

At a glance

Situation Korean When to use English
Heads-up when you see the risk 말씀드릴 게 있는데요, ○○ 건 일정이 조금 빠듯할 것 같습니다 Before the due date, as soon as you know Quick heads-up: the timeline on ○○ looks a bit tight.
Propose a new date 혹시 마감을 목요일까지 조정 가능할까요? When you know how much time you need Would it be possible to adjust the deadline to Thursday?
Lighter version for a short delay 목요일 오전까지 드려도 괜찮을까요? When the new date is close Would it be okay if I sent it by Thursday morning?
Keep things moving 우선 완료된 부분부터 오늘 공유드릴까요? To show progress while you finish Shall I share the finished part today first?
Avoid as your whole message bare 늦어질 것 같아요 On its own, with no date "It’s going to be late." Leaves them guessing how late

Why does "늦어질 것 같아요" land badly?

It isn’t rude. It just reports a problem and stops there. Your manager now has to ask all the follow-up questions (how late, why, what’s already done), and a message that makes the other person dig for details can read as careless even when you’re working hard.

The fix is to turn the announcement into a request. Compare 늦어질 것 같아요, "it’s going to be late," with 혹시 마감을 목요일까지 조정 가능할까요?, "would it be possible to adjust the deadline to Thursday?" Same news, but the second one gives a date and leaves the decision with them, which is exactly where it belongs.

A short reason helps, and one clause is plenty: 자료 회신이 늦어져서 ("because the data came back late") or 다른 건과 일정이 겹쳐서 ("because it overlaps with another task"). You don’t need a paragraph of apology.

연장 or 조정?

You’ll hear both. 연장 means extension, making the deadline longer, and 기한을 연장해 주실 수 있을까요? is clear and perfectly polite. 조정 means adjustment. It can cover the date, the scope, or the order of tasks, so it often sounds a little more like "let’s work this out together" than "please do me a favor." When you’re putting a specific new date on the table, 조정 is a comfortable fit.

If the new date is close, you can skip the deadline word entirely: 목요일 오전까지 드려도 괜찮을까요? "Would it be okay if I sent it by Thursday morning?" It’s light, specific, and easy to answer with a quick 네.

When should I ask?

As soon as you can see the risk, not on the due date. A heads-up two days ahead gives your manager room to move a meeting or warn a client. A message at 5 p.m. on the day leaves them with nothing to do but feel let down.

If you don’t know the new date yet, a heads-up still beats silence: 말씀드릴 게 있는데요, 보고서 일정이 조금 빠듯할 것 같습니다. "Quick heads-up: the report timeline looks a bit tight." Then follow up with the date once you know it. Two short messages are much kinder than one late surprise.

Lines you can borrow

  • 말씀드릴 게 있는데요, 보고서 일정이 조금 빠듯할 것 같습니다. — Quick heads-up: the report timeline looks a bit tight.
  • 자료 회신이 늦어져서, 혹시 마감을 목요일까지 조정 가능할까요? — The data came back late. Would it be possible to adjust the deadline to Thursday?
  • 목요일 오전까지 드려도 괜찮을까요? — Would it be okay if I sent it by Thursday morning?
  • 우선 완료된 부분부터 오늘 공유드릴까요? — Shall I share the finished part today first?

What if they say no?

Sometimes the date really can’t move. A client is waiting, or the meeting is already booked. That’s okay; your early message still did its job. Now switch from "more time" to "what matters most": 그럼 어떤 부분을 먼저 하면 좋을까요? "Then which part should I do first?"

That question shows you’re working with the deadline, not against it. Offering a partial is the other way to keep things moving: 우선 완료된 부분부터 오늘 공유드릴까요? Even half a draft lets your manager see progress and plan around the rest.

Try it at work today

Look at your task list and find the one deadline that feels tight. Write the message now, in Korean: a short reason, then a specific date as a question. If the deadline turns out fine, you’ve lost nothing. If it doesn’t, you’ll send it a day earlier than you would have.

Asking for more time is rarely the problem in a Korean office. Asking late, with no date, is.

This week: flag tight deadlines early, swap a bare "늦어질 것 같아요" for a specific date as a question, and offer what’s already done.

Quick questions

Is it rude to ask for a deadline extension in Korean?

Not at all, as long as you ask early and bring a date. Most managers would much rather hear "목요일까지 가능할까요?" on Tuesday than find out on Wednesday night.

Should I apologize first?

A short 죄송하지만 at the start is natural, and one is enough. A clear new date reassures your manager far more than a long apology.

Is a chat message okay, or should I ask in person?

A chat message is fine for most teams, especially for the first heads-up. If a client or a big meeting depends on the date, a quick word at their desk afterward is a kind extra.

Related reads

If you want to practice:

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