Assigned a Senior vs. Assigned a Buddy: Onboarding in South Korea and the UK

🇰🇷 South Korea · 🇬🇧 United Kingdom

By Priya Mehta, The Global Office

In South Korea, your first month at a new job comes with a designated senior colleague — a sunbae — who is informally on the hook for your entire integration, from unwritten office etiquette to who not to sit next to at the year-end dinner. In the UK, your first month comes with a "buddy," a laminated induction pack, and a calendar invite for a coffee catch-up that may or may not happen. Both countries call this mentorship. Only one of them treats it as a binding social contract.

Do's & Don'ts

🇰🇷 South Korea

🇬🇧 United Kingdom

🇰🇷 South Korea

South Korean onboarding runs through a formal-informal hybrid structure built on the sunbae-hoobae (senior-junior) system, which organizes relationships at every level of a Korean workplace. When a new employee arrives, they are typically paired with a specific senior colleague responsible for their integration in the fullest sense — not just job function, but company culture, the personalities of key figures, and the tacit knowledge that separates competence from fluency. Crucially, this is understood as reciprocal: the sunbae owes the hoobae real guidance and protection, not just correction.

Hoesik — after-work team dinners — function as the primary onboarding venue outside the desk itself, and the etiquette is genuinely ritualized: pouring drinks for seniors with both hands, receiving them the same way, and treating attendance as close to mandatory in a new hire's first months. This sits alongside a work-hours culture that, while easing, remains demanding: South Korea logged 1,833 average annual working hours in 2025, per OECD-tracked data reported by the Korea Herald and Korea Times, still roughly 97 hours above the OECD average and the sixth-longest in the bloc. For a new arrival, the mentorship structure and the hours culture are tightly linked — the sunbae relationship exists partly to help a hoobae survive the demands of that schedule.

🇬🇧 United Kingdom

UK onboarding tends toward a lighter, more self-directed model. Larger employers frequently run structured graduate schemes — often 12-month rotational programmes, as seen at organizations like UK Government Investments — that pair new hires with formal mentors and build career-planning support directly into the first year. Industry data suggests 87% of businesses running active onboarding mentorship programmes believe new-hire ramp-up is measurably accelerated, and inductions are generally treated as separate from the deeper cultural onboarding — inductions cover logistics and policy, while onboarding proper is meant to integrate someone into culture and relationships over a longer runway.

In practice, though, the UK's version of mentorship is considerably less binding than Korea's. There's no equivalent social penalty for skipping an optional coffee catch-up, and the relationship is generally framed as a resource to be used rather than an obligation to be honored. British workplace reserve compounds this: colleagues are often polite and welcoming without being especially proactive about checking in, which means a new hire who waits to be onboarded, rather than asking direct questions, can drift for weeks with only a vague sense of where they stand.

The Reckoning

The core difference is obligation versus opportunity. Korea's sunbae-hoobae system creates a mentorship relationship with real social weight attached — showing up, reciprocating, and observing hierarchy are not optional extras, they're how trust gets built at all. The UK's mentor-buddy system creates an opportunity that a self-directed new hire can use well or barely use at all, with comparatively little social cost either way.

The counterintuitive twist is which country produces faster real integration. Korea's system, demanding as it is, tends to embed a new hire into the social fabric of a team quickly and thoroughly, because the structure leaves little room to opt out. The UK's lighter-touch system can leave capable new hires professionally competent but socially peripheral for months, simply because nothing forces the relationship-building to happen — it has to be chosen, repeatedly, by someone still learning the unwritten rules well enough to know what to choose.

The Part the Brochure Left Out

r/korea — A foreign hire at a Korean firm described their first hoesik as the moment the job actually started to make sense — three rounds of soju and a karaoke session revealed more about the internal team dynamics than two weeks of official onboarding documents had.

Quora — Someone who relocated to Seoul for a corporate role wrote that the hardest early lesson wasn't the language but learning that their sunbae's casual-sounding suggestions during lunch were, functionally, instructions — treating them as optional advice caused real friction.

Internations — A British professional who moved to a UK graduate scheme after working in Asia noted that the biggest surprise was how little anyone checked in after week one; the onboarding "buddy" system existed on paper, but real integration depended entirely on how many coffees she personally organized.

teamblind.com — A contributor comparing early-career experiences across markets observed that Korean hierarchy, while demanding, at least made expectations explicit, whereas UK workplace politeness could leave a new hire genuinely unsure for months whether they were meeting the bar.

Quora — A respondent addressing life as a foreigner working in Korea said the biggest adjustment was realizing that declining a hoesik invitation without a very good, clearly communicated reason had social consequences that lingered well past the event itself.

Conclusion

Anyone moving into a Korean workplace should treat the sunbae relationship as one of the most important professional assets they'll build in the first year — invest in it deliberately, attend the dinners, and reciprocate once you're senior enough to. Anyone moving into a UK workplace should assume nobody is going to chase them down with support, and should schedule their own coffees, ask their own blunt questions, and not mistake British politeness for disinterest. The honest version: Korea will hand you a mentor whether you want one or not, and the UK will hand you a mentor only if you remember to actually pick them up.