At work, there will be times when someone asks you to do something, but you cannot say yes. Maybe you are too busy, the deadline is too tight, or the task really is not your responsibility. In those moments, you do not need to sound harsh, and you do not need to give a long excuse — you only need to be clear, respectful, and calm. Saying no politely is a skill that protects your time and keeps your workload realistic — and done well, it actually strengthens your relationships with coworkers, managers, and clients instead of damaging them.

仕事では、頼まれごとを断らなければならない場面が必ずあります。忙しいとき、締め切りが厳しいとき、あるいは自分の担当ではないとき。そんなときでも、きつく言ったり、長い言い訳をしたりする必要はありません。はっきり、丁寧に、落ち着いて伝えれば十分です。丁寧に断る力は、自分の時間を守るだけでなく、うまく使えば同僚や上司、クライアントとの関係をより良くします。

When will you use this? / いつ使う場面があるの？

A coworker asks for a favor: 同僚から、仕事を手伝ってほしい、シフトを代わってほしいと頼まれるとき。
Your manager offers you extra work: 上司から新しい仕事やプロジェクトを頼まれるが、すでに手一杯なとき。
A client asks for a rushed deadline: クライアントが、当初の約束より早い納期を求めてくるとき。
A request falls outside your role: 本来自分の担当ではない仕事を頼まれるとき。
You need to protect a higher priority: もっと優先すべき仕事があるのに、他のことに誘われたり頼まれたりするとき。

2. Core Language Pattern / 基本の型

A polite refusal at work usually has three parts. Use this simple template every time:

The Template / テンプレート

I appreciate you asking, but I can't take this on right now.
I'm already handling [reason], so it's not realistic for me at the moment.
Maybe [alternative] could work instead?

1. 「I appreciate you asking」で相手への気遣いを先に伝える。いきなり断るより、印象がやわらかくなる。
2. 「I can't take this on right now」ではっきり、しかし穏やかに断る。あいまいにせず、はっきり伝えることが大切。
3. 理由か代案を短く添える。長い言い訳は不要。ひとことで十分。同じ「できません」でも、最初に相手への気遣いのひとことを入れるだけで、印象が大きく変わります。特に上司やクライアントに対しては、この習慣を身につけましょう。

3. Vocabulary Bank / 単語リスト

Here are 16 essential words and phrases for saying no politely at work:

decline = 断る、辞退する

turn down = （依頼などを）断る

unable to = 〜できない（丁寧な言い方）

not in a position to = 〜する立場にない

deadline = 締め切り

swamped = 仕事に追われている（口語）

overcommitted = 予定を詰め込みすぎている

bandwidth = （比喩的に）対応できる余力

tight schedule = きついスケジュール

outside my scope = 自分の担当範囲外

delegate = （仕事を）任せる、委任する

reschedule = 予定を変更する

rain check = また今度、の意味で使う口語表現

hand off (a task) = （仕事を）引き継ぐ

alternative = 代替案

circle back = （後で）改めて話し合う（ビジネス口語）

4. Useful Phrases by Function / 場面別フレーズ集

① Softening a Direct No / はっきり断るときのやわらげ方

I'm sorry, but I can't. 申し訳ありませんが、できません。

Unfortunately, I'm not able to. 残念ですが、対応できません。

I'm afraid I can't. 恐れ入りますが、難しいです。

I have to decline. お断りしなければなりません。

② Giving a Reason / 理由を伝える

I'd love to help, but I'm swamped right now. お手伝いしたいのですが、今は手一杯です。

I wish I could, but I'm already overcommitted. できればいいのですが、すでに予定を詰め込みすぎています。

I can't take this on at the moment — I'm on a tight deadline. 今は引き受けられません、締め切りが迫っているので。

That's outside my scope, unfortunately. 残念ながら、それは私の担当範囲外です。

③ Offering an Alternative / 代案を提案する

Maybe I can help later this week. 今週後半ならお手伝いできるかもしれません。

Could we revisit this once my current project wraps up? 今のプロジェクトが終わったら、改めて検討できますか。

Perhaps someone else could help instead — they just finished their part. 代わりに別の人に頼めるかもしれません、ちょうど終わったばかりなので。

I can send you a draft version by tomorrow, if that helps. お役に立てば、明日までに下書き版をお送りできます。

④ Softening the Whole Sentence / 文全体をやわらげる表現

I'm afraid... 恐れ入りますが…

At the moment... 今のところ…

I appreciate you thinking of me, but... 声をかけてくれてありがたいのですが…

Thanks for asking directly — let me be honest with you. 率直に聞いてくれてありがとう、正直にお伝えしますね。

⑤ Ending Politely / 丁寧に締めくくる

Thank you for understanding. ご理解いただきありがとうございます。

I really appreciate your patience. お待ちいただき、感謝します。

Let's touch base again once things settle down. 落ち着いたら、また相談させてください。

I'll get that ready for you as soon as I can. できるだけ早く準備しますね。

5. Three Example Conversations / 会話の例 3つ

Conversation 1: A Coworker Asks for Help Over Coffee

Setting: Office break room. Partner: Aya, a work friend, is behind on a report and asks for help finishing it tonight.

AyaHey, do you have a second? I'm kind of drowning in this report.

YouOh no, what's going on?

AyaThe client moved the deadline up, and I still have half the slides left. Could you help me finish it tonight?

YouAh, I really wish I could, but I'm actually swamped myself right now.

AyaReally? I thought your project wrapped up last week.

YouIt did, but a new one landed on my desk yesterday, and it's due Friday.

AyaUgh, okay. I guess I'll just have to power through it alone.

YouI know that's rough. Have you asked Kenji? He finished his part early this week.

AyaGood idea, I hadn't thought of him.

YouIf it's still not enough by tomorrow morning, ping me — I might have an hour free before my meeting.

Conversation 2: Your Manager Asks You to Take on Extra Work

Setting: Manager's office. Partner: Mr. Sato, your manager, wants you to take over a new client account starting next week.

Mr. SatoDo you have a minute? I'd like you to take on the Yamada account starting next week.

YouOf course — can I ask what that would involve?

Mr. SatoWeekly check-ins with the client and reviewing their monthly reports.

YouI appreciate you thinking of me for this, but I don't think I can take it on right now.

Mr. SatoOh? Is something else taking up your time?

YouYes, I'm already handling two ongoing projects, and both have deadlines this month.

Mr. SatoI see. I didn't realize your plate was that full.

YouIf it's possible, could we revisit this once one of those projects wraps up?

Mr. SatoThat could work. When does the first one finish?

YouThe Tanaka project ends in about two weeks — that would be much more manageable, thank you for understanding.

Conversation 3: A Client Asks for a Rushed Deadline on a Video Call

Setting: Video call with a partner company. Partner: Jason, a client, asks if the final files can arrive tomorrow instead of Friday.

JasonHey, thanks for hopping on the call. So, any chance we could get the final files by tomorrow instead of Friday?

YouThanks for asking directly, Jason — let me be honest with you about this one.

JasonSure, go ahead.

YouMoving it to tomorrow just isn't realistic on our end. We still have a round of quality checks scheduled.

JasonI figured it might be tight. Is there any part we could get early, even a draft?

YouThat's actually something we can do. I could send you the draft files by tomorrow afternoon.

JasonThat would help a lot on our side. What about the final version?

YouThe final version would still come Friday, as originally planned, once the checks are done.

JasonThat works for us. I just needed something to show our team early.

YouPerfect, I'll get that draft package ready for you.

6. Naturalness Tips / 自然に聞こえるコツ

Tip 1: Don't sound too formal with coworkers / 同僚に対して堅苦しくなりすぎない
❌ Too Formal: "What is the problem."
✅ Natural: "Oh no, what's going on?"
Tip 2: Soften refusals to your manager / 上司への断り方をやわらげる
❌ Too Blunt: "I refuse to accept this task."
✅ Natural: "I appreciate you thinking of me, but I don't think I can take it on right now."
Tip 3: Keep client refusals warm, not robotic / クライアントへの断りを機械的にしない
❌ Robotic: "That request cannot be fulfilled."
✅ Natural: "Moving it to tomorrow just isn't realistic on our end. We still have a round of quality checks scheduled."
Tip 4: Always close with something forward-looking / 前向きな一言で締めくくる
"Let's touch base again once things settle down."
"I'll get that ready for you as soon as I can."

7. What to Avoid / 避けたほうがいいこと

Mistake 1: Sounding too direct / 直接的すぎる言い方

❌ "No, I can't."
✅ "I'm sorry, but I can't."

Mistake 2: Giving a long excuse / 長い言い訳をする

❌ Explaining every detail of why you're busy before actually saying no.
✅ "I'm sorry, but I can't take this on right now — I'm swamped with another deadline." (one short reason is enough)

Mistake 3: Being vague / 曖昧すぎる

❌ "Maybe later."
✅ "Maybe I can help later this afternoon."

Mistake 4: Saying yes when you really mean no / 本当は無理なのに「はい」と言ってしまう

❌ Agreeing to a request you know you can't realistically finish.
✅ "I wish I could, but I don't think I can finish that by tomorrow."

Mistake 5: Forgetting to offer an alternative / 代案を出し忘れる

❌ Ending the conversation right after saying no, with nothing else offered.
✅ "I can't do it today, but I could help tomorrow morning instead."

8. Practice Template / 練習テンプレート

Template / テンプレート

I appreciate you asking, but I can't take this on right now.

I'm already dealing with [reason], so it's not realistic for me at the moment.

Maybe [alternative] could work instead?

Worked Case Scenarios

Worked Example 1: Aya — declining a coworker's request for help:
"I appreciate you asking, but I can't take this on right now. I'm already dealing with my own report deadline, so it's not realistic for me tonight. Maybe I can take a look first thing tomorrow morning instead?"

Worked Example 2: Kenta — declining extra work from his manager:
"I appreciate you considering me for this, but I can't take it on right now. I'm already dealing with two ongoing projects with deadlines this month, so it's not realistic for me at the moment. Maybe we could revisit this once one of them wraps up?"

Worked Example 3: Mio — declining a client's rushed deadline:
"I appreciate you asking directly, but moving the deadline up isn't realistic on our end. We're already dealing with a scheduled round of quality checks, so tomorrow isn't possible. Maybe I could send you a draft version by tomorrow afternoon instead?"

💡 Bonus tip: If you're not sure how to phrase the reason politely, just describe what you're already doing in one short sentence — that alone is usually enough.

How to Say “No” Politely at Work – Dialogue Practice / 仕事で丁寧に「ノー」と言う方法