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KOREAN SOCIAL RULES, EXPLAINED
Why do Koreans ask your age?
Often they are not calculating your legal rights. They are trying to choose a form of address, speech level and relationship frame. Age matters, but so do job rank, school seniority, family generation, intimacy and whether the setting is formal.
PRACTICAL
Short answer for a newcomer: use polite speech first. You do not need to guess who may speak casually. Let the relationship be clarified explicitly.
THE CUSTOMER-CENTER ANSWER
Age is one input into Korean relationship grammar
English can address a boss, sibling and stranger with the same “you.” Korean routinely changes titles, kinship terms, verb endings and honorific marking according to the relationship and setting.
존댓말
jondaetmal
Polite or honorific speech. This is the safe default with a new adult acquaintance.
반말
banmal
Non-honorific or casual speech. It is not automatically available just because one person is older.
선배 / 후배
seonbae / hubae
Senior and junior in a school, profession or activity, usually based on entry or experience—not simply birth age.
형·누나·오빠·언니
hyeong, nuna, oppa, eonni
Kinship terms also extended to close older acquaintances, with the term depending on speaker and addressee gender.
FACT
Sociolinguistic research treats listener status, solidarity and discourse setting as interacting variables. “Older person equals one fixed speech form” is too simple.
LIMIT
Common myth: “the 2023 mannai (만 나이) reform got rid of Korea’s age-based honorifics.” It did not. The reform standardized how age is counted for laws, contracts and public documents — it changed the number, not the social convention of choosing speech level by relationship and status. People still ask your age, and jondaetmal is still the safe default.
PRACTICAL
If someone asks your age, you can give your birth year if that is easier: “I was born in 1995.” That avoids confusion among full age, birth-year age and the older counting-age convention.
Three real scripts
First meeting (business or formal)
A: “실례지만 연세가 어떻게 되세요?” (May I ask your age?)
B: “95년생입니다.” (I was born in ’95.)
B: “95년생입니다.” (I was born in ’95.)
Both sides stay in jondaetmal regardless of the answer — the question calibrates titles and tone, not permission to drop honorifics.
Workplace (new hire meets an earlier-joining, younger colleague)
New hire: “안녕하세요, 이번에 입사한 OOO입니다.” (Hello, I’m OOO, joining this year.)
Senior (younger): “네, 잘 부탁드립니다.” (Nice to work with you.)
Senior (younger): “네, 잘 부탁드립니다.” (Nice to work with you.)
Both stay polite. The newcomer treats the other person as seonbae by entry order, not by who is older.
Friends (similar age, casual setting)
A: “몇 년생이야?” (What year were you born?)
B: “99년생.” A: “어, 나도! 말 놓자.” (Same here! Let’s drop the honorifics.)
B: “99년생.” A: “어, 나도! 말 놓자.” (Same here! Let’s drop the honorifics.)
The switch to banmal is explicit and mutual — it is proposed and accepted out loud, not assumed from age alone.
SOURCE DESK
Check the rule before repeating the stereotype
Official language and military guides establish current rules; historical and sociolinguistic sources establish narrower interpretations.
National Institute of Korean Language ↗
Official English guide to age, rank, context and mutual honorifics
Sociolinguistic Journal of Korea (2019) ↗
Speech style by listener status, solidarity and setting
KDI Nara Economy — Oh Sung-cheol ↗
Attributed modern-school explanation of age cohorts and hierarchy
Military Manpower Administration ↗
Official service process and current branch lengths
Korea.net / Ministry of Government Legislation ↗
2023 legal age-counting change and exceptions
Ministry of Employment and Labor ↗
Government wage-system reform information
NEXT KOREA QUESTION
Why do credentials and school names carry so much weight?
Continue from age and entry-year ranking to Korea’s education-pressure structure.
Open the English education report →