Published: September 24, 2026 · Updated: October 17, 2026
Join a Korean university club or a Korean team at work, and you’re likely to hear two words: seonbae and hubae. They’re often translated as “senior” and “junior,” but they follow their own logic. In Korea, seonbae and hubae are decided by who joined a school, company, or group first. Here’s how the system works at universities and companies, what each side is expected to give, and how workplaces are changing it.
Quick Vocab
A few Korean words come up in this post — here’s how to say them.
- senior (joined earlier) – seon bae
- junior (joined later) – hu bae
- same entering class – dong gi
- class year, by year of entry – hak beon
- student club – dong a ri
- department varsity jacket – gwa jam
- honorific suffix – nim
- department head (polite) – bu jang nim
- teacher, also a general honorific – seon saeng nim
1. What Do Seonbae and Hubae Mean?
A seonbae is someone who joined the same school, company, or group before you, and a hubae is someone who joined after you. The Korea Herald explains that these “ranks” are decided by whether a person joined the organization before another.
That makes the order hard to undo. The same article calls the resulting hierarchy “quite irreversible” and quotes a saying Koreans use often: “once a seonbae, forever a seonbae.”
The terms also show up at work. A more recent Korea Herald article notes that in the workplace, sunbae, another spelling of seonbae, can also be used for a colleague who joined earlier.
This is the main difference from the family-style titles hyeong, nuna, oppa, and eonni. Those depend on birth year and on the speaker’s gender. These two terms depend on entry order, and the words themselves are the same whether the speaker is a man or a woman.
| Hyeong, nuna, oppa, eonni | Seonbae / hubae | |
|---|---|---|
| Decided by | Birth year and the speaker’s gender | Who joined the group first |
| Where you hear it | Family, friends, acquaintances | Schools, clubs, and workplaces |
| Changes with the speaker’s gender | Yes | No |
2. Seonbae and Hubae at Korean Universities
Universities are a good place to see the system at work. According to a 2024 Korea Herald guide to college lingo, a student’s class year at a Korean university is the year of entry. This hakbeon stays the same and plays a key role in forming relationships among students.
That’s why students ask about it. The same guide says it’s essential to ask an alum, “What is your hakbeon?” The answer tells you whether the person is your seonbae, your hubae, or your donggi, a classmate who entered in the same year.
Student clubs, called dongari, usually follow the same norms, including hierarchical terms like seonbae and hubae. Clubs and majors also hold an MT, short for membership training, which the guide describes as a social outing for students in the same major or club.
⚠️ Heads-up: The Korea Herald guide adds that in many cases an MT turns into a binge-drinking session. If you join one, it’s fine to pace yourself or skip the drinking.
You may also notice students wearing matching varsity jackets, called gwajam. According to the guide, these jackets carry the school logo, the major, and even the hakbeon.
💡 Tip: If you study in Korea, learn your own hakbeon early. When you meet another student, knowing both years tells you how to address each other.
3. Titles and Seniority at Korean Companies
At work, entry order mixes with job titles. When speaking to someone older or more senior, the Korea Herald notes that the safest option is usually the person’s official title, such as bujangnim for a department head. Koreans may add the suffix nim to some titles to show extra respect.
Name plus ssi is where newcomers can slip. The same article says name plus ssi can sound rude when a younger person uses it toward someone older or more senior.
Why does ssi carry that weight? In a 2023 Korea Herald report, Lee Keon-beom explained that ssi was used for people with no titles, so it came to give an impression of less respect. He said Koreans believed it was more polite to address one another by job title.
When you don’t know someone’s title, there’s another option. The same report says seonsaengnim literally means teacher but can also work as a general honorific when a formal title is unclear. Banks, government offices, and customer service centers have also started using nim instead of ssi.
Titles matter outside of conversation, too. A 2016 Korea Herald report notes that when exchanging business cards, Koreans pay attention to titles because they reflect a person’s job type, rank, experience, and social status.
Relationships can shift over time. The Korea Herald notes that a younger colleague may move from calling someone sunbae to a more informal age-based title, which can be a sign that the relationship has become closer.
4. What Seniors and Juniors Owe Each Other
The tie between the two is more than a pair of labels. Olga Fedorenko of Seoul National University described the two roles in a paper presented at the EASA 2024 conference as a patronage-like relationship within institutions with fixed membership, such as high schools, universities, and workplaces.
In her description, seniors use their higher social standing to give juniors resources and opportunities. Juniors repay them with loyalty and by granting the favors seniors ask for, and both sides care for each other. These ties can serve as routes to social and professional advancement and as a safety net.
Opinions are mixed. Based on in-depth interviews with middle-class South Koreans, the paper found that many praise the practice as “beautiful cross-cohort care.” Others see it as old-fashioned, irrational, and nepotistic, and say it hinders meritocracy and fuels “cliquism in hiring.”
The 2014 Korea Herald article shows the same tension. Kwon Soon-yong, a sports sociologist at Seoul National University, said that order based on seniority is considered important for discipline, especially in sports. He also said that excessive abuse of seniority-based authority is “a distorted form of leadership.”
5. Flatter Workplaces: Nim, Pro, and English Names
Several companies have tried to soften seniority by changing how people address each other. According to the 2016 Korea Herald report, CJ Group was the first South Korean company to start removing job titles, in 2000, using nim instead. The same report notes that Hanwha tried to standardize job titles in 2012 but brought them back within three years.
Samsung Electronics made its own change in 2017. The Korea Herald reported that starting March 1, seven top-down titles would be replaced by four career levels, and employees would add nim or pro to names when addressing each other. Those ranking higher than director, such as team leaders, group leaders, and executives, kept their titles. Skeptics said the change didn’t address a fundamentally rigid hierarchy and might clash with the use of honorifics for seniors in Korean culture.
English names are a newer step. According to a 2023 Korea JoongAng Daily report, the trend was set by IT startups in the early 2010s, including Kakao, which has not used job titles since it was formed in 2010. It spread to large companies such as CJ CheilJedang and Lotte Wellfood from late 2022 onward. The same report notes that Hyundai Motor Group cut its titles down to two in 2019.
Why English names? A professor quoted in the report explained that Korean has few ways to address someone without signaling rank, so English names let employees communicate as equals. Still, the report says the culture is still just beginning at most companies, and experts say switching names alone doesn’t create a horizontal culture.
The report also describes side effects critics have raised, such as junior staff turning down assigned work and team leaders finding the change hard. Experts in the report recommend tolerance, direct communication, and employee education, which they say most companies don’t provide.
So if you work in Korea today, you may meet traditional titles, name plus nim, and English names, sometimes at the same company. Listening to how coworkers address each other is a practical way to learn which style your team uses.
Key Takeaways
- Seonbae and hubae are decided by who joined a school, company, or group first, and the hierarchy is hard to reverse.
- At universities, the hakbeon shows the year of entry and tells you who is a seonbae, hubae, or donggi.
- At work, official titles are usually the safest choice with seniors, and name plus ssi can sound rude toward them.
- Several companies have tried nim, pro, or English names, but the change is still uneven.
If you’re studying in Korea, learn your hakbeon and follow your club’s norms; if you’re working in Korea, use titles with seniors and listen to how your team addresses each other.
Frequently Asked Questions (FAQ)
Is seonbae based on age?
Not mainly. The Korea Herald describes seonbae and hubae as ranks set by who joined an organization first.
Can you call your seonbae by name?
It’s safer not to. Name plus ssi can sound rude toward someone older or more senior, so a title is usually the safer choice at work.
What is the difference between sunbae and hoobae?
These are other spellings of seonbae and hubae. Sunbae is the person who joined earlier, and hoobae is the person who joined later.
Do Korean companies still use job titles?
Many do. Some have switched to nim, pro, or English names, but the Korea JoongAng Daily reports that the English-name culture is still just beginning at most companies.
My Take
Growing up, I learned that the older one gives way and looks after the younger, and the younger shows respect. To me, seonbae and hubae feel a lot like hyeong and dongsaeng. But I believe a title like hyeong or seonbae isn’t earned just by being older or joining first. If you hold it, you have to act like it. When both sides do their part, the relationship can be a warm one.
Disclaimer: This article is for general informational purposes only. Customs in Korea differ by region, generation, and family, and laws and official rules can change. Check the official sources linked below before you rely on a detail.
How this article was made: We researched official and reputable public sources, drafted this article with the help of AI tools, and had it reviewed by the author before publishing.
Sources
- EASA 2024 – Olga Fedorenko, Dependencies and moralities of senior-junior (sŏnbae-hubae) institutional networks in South Korea: nomadit.co.uk
- The Korea Herald – ‘Seonbae’ takes precedence in Korea (2014): koreaherald.com
- The Korea Herald – Decoding popular lingo for deeper insight into Korean college culture (2024): koreaherald.com
- The Korea Herald – What should I call you? Will ‘nim’ do? (2023): koreaherald.com
- The Korea Herald – Samsung Electronics to streamline job titles (2017): koreaherald.com
- Korea JoongAng Daily – Why do Koreans create a new identity at work with an English name? (2023): koreajoongangdaily.com
Suggested Reading
Korean Sibling Titles: Hyeong, Nuna, Oppa, Eonni Explained
What hyeong, nuna, oppa, and eonni mean, and how birth year and gender decide them.
Why Koreans Ask Your Age: Korean Age vs. American Age Explained
Why Koreans ask your age, and how Korean age compares with American age.
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