수고하세요 (sugohaseyo)

수고하세요 (sugohaseyo) is a greeting you hand to someone who is working right now, carrying the feeling of “you’re working hard — keep it up.” Stepping out the door after paying at a convenience store, right before closing the door after taking a delivery box, heading home while a colleague stays behind for overtime — it’s a phrase Koreans use out of habit several times a day.

But this greeting hides the single trap that trips up Korean learners most often. Because the honorific -세요 (-seyo) is attached, it looks like a polite phrase you can say to absolutely anyone. In practice, it isn’t. Say it to your 부장님 (bujangnim) — your department head — to your professor, or to your elderly landlady, and their expression will stiffen ever so slightly. Nothing about the grammar is wrong; the phrase is simply sitting in the wrong seat. Today we’ll trace exactly where that mismatch comes from.

수고 (sugo) refers to the effort and exertion that go into doing work. Attach -하세요 (-haseyo) and it becomes “please keep up that effort,” and folded inside it is an acknowledgment: “I can see that you’re working hard right now.” That’s why this short greeting sounds so unusually warm. If 안녕히 계세요 (annyeonghi gyeseyo) is just a phrase for closing the door behind you, 수고하세요 (sugohaseyo) is a phrase that closes the door while taking one moment to recognize the other person’s day.

The trouble lies in that very ingredient — the acknowledgment. In Korean, words that notice and appraise someone else’s effort generally flow downward, from above. A teacher telling a student 수고했어요 (sugohaesseoyo), a team leader telling a team member — perfectly natural. The reverse direction turns awkward, because it puts a junior in the position of grading a senior’s effort. The National Institute of Korean Language has long advised, in its guidance on language etiquette, against using this phrase toward people above you.

Tense matters too. 수고하세요 (sugohaseyo) is for someone who will go on working; 수고하셨습니다 (sugohasyeotseumnida) is for someone who has already finished. If you’re leaving first and a colleague is staying, it’s 수고하세요 (sugohaseyo). If you finished the work together and are parting ways, it’s 수고하셨습니다 (sugohasyeotseumnida). Swap the two and you create the small awkwardness of “I’m not done yet — why are you talking like I am?”

A Real Conversation

Scene: Moving day for Emily. The last of the boxes has been carried up, and the moving crew is squaring away the truck down below.

Emily: (out the window) 아저씨, 수고하세요! 감사합니다! Sir, keep up the good work! Thank you!

Jun-kyung: 오, 지금 건 딱 맞게 썼네. 저런 자리에선 그 말이 제일 자연스러워. Oh, that one was spot on. In a moment like that, it’s the most natural thing to say.

Emily: 그치? 아까 집주인 할머니 가실 때도 똑같이 수고하세요 했는데. Right? I said the same thing to the landlady when she was leaving earlier.

Jun-kyung: …아, 그건 좀. 할머니한테는 그냥 “안녕히 가세요”가 나았지. …ah, that one, not quite. For her, a simple goodbye would’ve been better.

Emily: 왜? 할머니도 계약서 챙기느라 아침 내내 애쓰셨잖아. Why? She worked hard all morning sorting out the contract too.

Jun-kyung: 애쓴 걸 알아주는 말이라서 그래. 윗사람 애쓴 걸 내가 매기는 모양이 되거든. Because it’s a phrase that acknowledges someone’s effort. Toward an elder, it ends up sounding like you’re grading them.

These Uses Sound Off

✗ (leaving the office first, to your department head) 부장님, 수고하세요. 먼저 들어가겠습니다. ✓ (leaving the office first, to your department head) 부장님, 먼저 들어가 보겠습니다. 내일 뵙겠습니다. → The grammar is perfectly fine, but it turns into a junior appraising a senior’s hard work. With people above you, it’s safer to skip any mention of their effort and leave just the farewell.

✗ (to a colleague who has finished up and is shouldering their bag) 어, 수고하세요! ✓ (to a colleague who has finished up and is shouldering their bag) 어, 수고하셨어요! 내일 봬요. → They’re already done, so you’ve effectively told them “keep on working hard.” Use 수고하세요 (sugohaseyo) for the person staying, and 수고하셨습니다 (sugohasyeotseumnida) for the person leaving.

What Would You Say Here?

It’s Friday evening, and I’m still at my desk working. My department head picks up his bag, stands, and says “먼저 갈게요” (“I’m heading out first”). What do I say back?

A. 부장님, 수고하세요. B. 부장님, 들어가세요. 내일 뵙겠습니다.

The answer is B. 들어가세요 (deureogaseyo). There’s nothing grammatically wrong with A, but it sets up a junior acknowledging a senior’s day of hard work, which comes across as subtly cheeky. What this moment calls for isn’t an appraisal — it’s a send-off. If you really want to mention their effort, 고생 많으셨습니다 (gosaeng maneusyeotseumnida) is about as safe as it gets.

Example Sentences by Situation

① Walking out of a convenience store after paying “감사합니다. 수고하세요 (sugohaseyo).” You take the bag, turn your body toward the door, and toss the words out almost over your shoulder. This is where the greeting fits most comfortably of all. The other person will keep working, I’m the customer, and there’s no hierarchy to weigh between us. All three conditions line up.

② Leaving work while a colleague stays for overtime “저 먼저 들어갈게요. 수고하세요.” This is the textbook use: said to someone who will stay behind and keep working. That said, if the other person is well above you in rank, it’s better to drop the phrase and simply end with “먼저 들어가 보겠습니다.” Same office, same hour — but the words change depending on who you’re talking to.

③ To a friend still studying at the study café (casual speech) “나 먼저 갈게. 수고해 (sugohae).” Among peers it shortens to 수고해 (sugohae) or just 수고 (sugo). The shorter it is, the lighter and friendlier it sounds — about the warmth of a pat on the shoulder. But this form is never, ever used toward someone senior to you.

Formal Speech, Casual Speech, and Similar Expressions

Expression	Tone & intensity	Where it’s used
수고하세요 (sugohaseyo)	Plain, matter-of-fact encouragement	Someone who’ll keep working. Service staff, colleagues, juniors. Not for seniors
수고하셨습니다 (sugohasyeotseumnida)	Recognition after the work is done	Someone you finished a job with. Careful with seniors
고생 많으셨습니다 (gosaeng maneusyeotseumnida)	Heavier, deeper sympathy	Someone who’s finished something grueling. Relatively safe even with seniors
수고해 / 수고 (sugohae / sugo)	Light and casual	Peers and juniors only. Casual speech
안녕히 가세요 (annyeonghi gaseyo)	Completely neutral	Anyone. The safest choice with seniors

Scan the table top to bottom and one rule surfaces: the more directly a phrase points at someone’s effort, the more strictly it flows downward — and the less it mentions effort, the freer it is to travel in any direction. When you’re hesitating in front of someone senior, just leave the effort out.

Cultural Background — Which Way Acknowledgment Flows

Watch a Korean workplace drama and you’ll notice the day opens with greetings and closes with greetings. In office-set works like tvN’s Misaeng (2014), which follows a new employee’s initiation into corporate life, who stands up to leave first, who stays behind, and which greeting passes between them lay out each character’s position exactly. That short exchange between the one leaving and the one staying isn’t a simple goodbye — it’s closer to a procedure for confirming the coordinates of a relationship.

Reality is a bit looser than the norm. Plenty of people still tack “수고하세요” onto the end of a messenger chat or the last line of a work email, and using it toward a senior isn’t rare either. But that looseness is a risk native speakers take after they’ve already read every degree of the relationship’s temperature. For learners, the safe side pays much better. Use it freely downward, never upward — keep just that one line and you’ll never go wrong with this expression.

And honestly, this phrase’s true home is outside the office. 수고하세요 (sugohaseyo) offered to a delivery driver, at the security guard’s booth, as you step out of a taxi, is the most common and least expensive kindness in the Korean language. It costs no money and no time, yet it tells someone who has been working all day, “I saw that you’re working.” That a phrase which turns rude when used carelessly can at the same time be this kind is exactly why it’s worth learning.

Today’s Quiz

You’ve just had your hair cut at the salon and paid at the counter. The stylist is getting ready to greet the next customer. What’s the most natural thing to say as you head out the door?

A. 수고하셨습니다 B. 수고하세요 C. 고생 많으셨습니다

See the answer

Answer: B. 수고하세요 (sugohaseyo)

The stylist’s work isn’t over. The next customer is waiting, so the “keep up the effort” side — 수고하세요 (sugohaseyo) — is the right fit. A is for someone who has completely finished, so the tense doesn’t match, and C carries far too much weight — it suits someone who’s wrapped up something exhausting, like a move or an all-nighter, so using it over a simple haircut sounds overblown.

Definitions and example sentences are from the National Institute of Korean Language’s Basic Korean Dictionary (krdict.korean.go.kr); that portion of this post, including our translations, is licensed under CC BY-SA 2.0 KR.