What Is a Korean Entry Cohort (Gisu) in Big Companies?

In a Korean company, people who joined in the same intake are 입사 동기 (ipsa donggi, entry peers) and belong to a numbered 기수 (gisu, cohort). It is not a sentimental category. The cohort fixes your position relative to every other employee permanently: who is senior to you, whose promotion is a defeat for you, whom you may speak to casually. Korea’s largest conglomerates have been dismantling the system since 2019, and they have said explicitly that breaking 기수문화, cohort culture, was part of the reason.

Element	What it does
기수 cohort number	Your permanent position in the company’s internal order
입사 동기 entry peers	Equals for life, and direct comparators
Group onboarding	One or two months of collective training built the bond
공채 bulk graduate hiring	The mechanism that created cohorts
Abolition since 2019	Hyundai, LG, SK moved to continuous and mid-career hiring

How did Korean companies create cohorts?

A corporate training room with rows of new employees in Korea

Through 공채 (gongchae, open recruitment): a once or twice yearly mass intake in which a large company hired hundreds or thousands of new graduates simultaneously through a single standardised process of application, written test and interviews.

Everyone hired in that round entered on the same day, with the same title, at the same salary step, and went through the same induction. Korean reporting on the period notes that into the early 2010s major firms put real effort into one or two months of collective training and large-scale unity events specifically to generate belonging, and that because mid-career hires were few, cohort culture had strong material basis.

What came out the other end was a numbered class. The 2012 intake. The 48th cohort. People who would move up the same ladder in parallel for thirty years.

Why does the cohort matter so much?

Because Korean workplaces resolve relative position before anything else, and the cohort is the instrument that resolves it.

Korean has grammatically obligatory choices about politeness, and Korean offices address people by job title rather than name. Before a sentence can be constructed, the speaker needs to know who outranks whom. Cohort number settles that for every pair of colleagues instantly, permanently, and without reference to ability. Two people from the same cohort can speak to each other as equals, which in a Korean hierarchy is a rare and valuable thing: entry peers are frequently the only colleagues with whom a senior employee can be candid.

The cohort also functions as the unit of comparison. When one member of a cohort is promoted ahead of the others, this is legible to everyone as the others falling behind, and the person left behind in their own cohort is in a socially difficult position. A later-cohort colleague becoming your superior is 역전, an inversion, and the system has no comfortable place for it. This is how the cohort becomes a career constraint: it does not merely record when you joined, it sets the schedule you are expected to keep.

That constraint connects directly to why Korean careers end early. In a structure where not being promoted on cohort schedule is a visible failure and where being managed by a junior cohort is awkward for everyone, the organisation’s easiest resolution is for the person to leave.

Why are companies abolishing bulk graduate hiring?

Two reasons, one about talent and one about culture, and Korean companies have been explicit about both.

Hyundai Motor Group was first among the ten largest groups, announcing in 2019 that it would end bulk hiring of new graduates. LG abolished open recruitment in June 2020, moving to select more than 70 percent of entrants through conversion internships. SK followed with a shift to fully continuous hiring of new employees.

The talent argument is straightforward: a single annual intake cannot fill a specialist role when it becomes vacant, and a standardised general-purpose selection process is poorly suited to hiring people with specific technical expertise. Korean press and HR commentary reported companies concluding that open recruitment had reached its limits for exactly these reasons.

The cultural argument was stated alongside it. Hankyung’s coverage, headlined around the question “what is cohort culture?”, reported the abolition of open recruitment as partly an organisational-culture reform aimed at ending cohort culture. The same reporting notes a visible side effect: the terms 삼성맨, 현대맨 and LG맨, the Samsung man, the Hyundai man, the LG man, have been fading as the intake that produced them disappeared.

Industry analysis of the transition, including HR commentary on the move to continuous hiring and Saramin’s work on changing recruitment strategy, treats this as a structural shift rather than a cyclical one.

What replaces the cohort?

Office workers in a Korean business district seen from behind

Not much, yet, and that is the interesting part.

Continuous hiring produces employees who entered on different dates, from different backgrounds, often with prior experience elsewhere. There is no shared induction, no class number, and no natural peer group. For a company trying to reduce age-based hierarchy, this is the intended result. For employees, it removes something that was genuinely useful: the handful of colleagues you could speak to frankly, and a clear map of where you stood.

Firms have responded with other reforms that fit the same direction, flattening title structures, moving toward English names or a single honorific for everyone, and decoupling pay from tenure. These are uneven and widely reported as incomplete, because the social expectations that cohort culture encoded, about age, deference and the awkwardness of rank inversion, do not disappear with the intake process that made them administratively convenient.

So the current state in many Korean workplaces is transitional: no cohort to organise the hierarchy, and the hierarchy still there.

What does this mean for a foreigner working in Korea?

Several practical things.

You will probably not have a cohort. Foreign hires usually enter outside bulk intake, which means no entry peers and no fixed position in the internal order. This is simultaneously freeing and isolating: you are exempt from cohort scheduling, and also outside the only network that produces frank colleagues.

Your question about seniority will be answered by title. In the absence of a cohort reference, colleagues will place you by job title and by age. Expect both to be established early, which is why Korean colleagues ask about age sooner than feels natural to many Westerners.

Watch for inversion sensitivity. If you are placed above someone older, or report to someone noticeably younger, that configuration carries friction that is not about you. Being aware of it is more useful than pretending it is not there.

And do not assume the new hiring means a flat culture. A company that has abolished open recruitment may still run on seniority norms. Hiring reform moves faster than deference.

What are the trade-offs?

What the cohort did well. It made a very large organisation legible. Everyone knew where they stood, promotion was predictable, and the system supplied each employee with a group of true equals in a hierarchy that otherwise permitted none. It also underwrote a form of job security: a cohort moved up together, and the company’s obligation to that class was understood.

What it cost. It priced ability below entry date. It made a mid-career hire structurally awkward, which is part of why Korean mid-career mobility was historically low and why older job-seekers struggle. It turned promotion into a zero-sum comparison within a class, with the predictable effect on the people not promoted. And it made the organisation unable to accommodate anyone whose career did not follow the standard shape, including women returning after a break and anyone who left and came back.

What the transition costs. Bulk hiring was also the most transparent entry route Korea had: a published process, a standardised test, and a result that did not depend on networks or internships. Continuous hiring advantages applicants with connections, relevant internships and the means to wait for a posting, which is a real equity loss for graduates without those things, and Korean student press has covered the narrowing door accordingly.

FAQ

What does gisu mean in a Korean company?

It is your entry cohort: the numbered intake you joined with. It permanently fixes your seniority relative to colleagues from earlier and later intakes.

What is the difference between donggi and gisu?

입사 동기 are the individual people who joined with you. 기수 is the cohort itself as a unit, usually numbered. In practice they refer to the same thing from different angles.

Which Korean companies abolished open recruitment?

Hyundai Motor Group announced the end of bulk graduate hiring in 2019, LG abolished open recruitment in June 2020, and SK moved to fully continuous hiring of new employees.

Is cohort culture gone from Korean workplaces?

No. The hiring mechanism that created it is being dismantled at large firms, but seniority expectations, title-based address and discomfort with rank inversion persist, and many organisations including public enterprises retain cohort-based intake.

Do foreign employees have a cohort in Korea?

Usually not, because foreign hiring generally happens outside bulk intake. Colleagues will place you by job title and age instead.

The structural answer

The entry cohort is what happens when an organisation needs to know who outranks whom before anyone can speak, and decides to settle it by hiring date. It worked: thousands of people entered on the same morning, learned their position, and kept to the schedule for thirty years, gaining in return a predictable career and a few genuine equals. It also made the company unable to use anyone who arrived late, left and returned, or was simply better than their cohort number. Korea’s largest firms are now dismantling the mechanism, in part deliberately, and are discovering that the hierarchy was never really about the hiring date. The cohort was only the filing system. What it filed is still in the building.