Source: arXiv

What the paper is

Dongwoo Kim’s August 2026 preprint, Does the Gender Wage Gap Originate at Labor Market Entry? Evidence from South Korea (arXiv:2608.03153), asks when Korea’s huge gender pay gap appears. OECD figures cited in the paper put Korea’s full-time gender pay gap near 29% — about 2.6× the OECD average — the widest in the club. The punchline is not “Korea starts unequal on day one.” It is that the conditional entry gap among recent college graduates is small, and most of the national gap is generated after entry.

The numbers that matter

Using Graduates Occupational Mobility Survey (GOMS) data for 2008–2019, Kim finds a raw entry-level wage gap around 12%, but after controls for education, age, and job characteristics the conditional hourly gap is only 4.3%, falling from 5.0% (2008–2011) to 3.0% (2016–2019). Selection corrections that do not lean on fragile exclusion restrictions leave that entry result basically unchanged. What remains at entry sits toward the top of the wage distribution — by 2016–2019 roughly closed at the 10th percentile and still about 5% at the 90th.

On Korean Labor and Income Panel Study (KLIPS) data, the selection-corrected gap roughly doubles for college-educated workers from about 8% (ages 24–35) to 17% (ages 24–55), and roughly triples across all workers from about 7% to 21%. Selection bias is negligible at entry and becomes first-order once Korea’s female employment “M-curve” (dip in prime childrearing years) takes hold. The paper also points to related work estimating a Korean child penalty in employment near 49% — among the largest in advanced economies — as a lifecycle mechanism, not as a new primary estimate.

Why it matters outside Korea

If you hire Korean graduates into global teams, relocate dual-career couples to Seoul, or benchmark “Korea’s 29% gap” in an ESG slide, this paper changes the sentence you should write. The OECD headline is real; the school-to-first-job conditional gap is not where most of that headline is born. Overseas HR that only audits starting offers will miss the divergence that shows up across promotions, hours inflexibility, and post-birth employment.

Expats comparing offers should also stop treating a near-parity junior package as proof that mid-career paths are gender-neutral in the same market.

What to watch (ops, not slogans)

• Audit careers, not only offers. Re-check promotion, hours, and return-from-leave patterns through the 30s–40s — that is where Kim’s corrected gap widens.
• Do not weaponize the 4.3% entry figure to dismiss the 29% OECD gap; the paper’s claim is timing, not that disparity is small.
• For dual-career moves to Korea: plan childcare and employment continuity before arrival; the M-curve and child-penalty literature the paper cites are the risk surface.
• Read it as research, not HR policy. Methods are semiparametric selection, ML checks, and bounds — strong for a briefing, not a substitute for counsel.

Korelay frame

Read this as a lifecycle-gap paper, not an “entry discrimination is the whole story” brief. The non-wire insight: Korea can show a world-leading aggregate gender pay gap and a shrinking conditional graduate entry gap at the same time — which means overseas readers who only watch campus recruiting will mis-locate the problem.

Source

arXiv:2608.03153 — Does the Gender Wage Gap Originate at Labor Market Entry? Evidence from South Korea (Dongwoo Kim, submitted 4 Aug 2026). Open preprint; figures paraphrased from the abstract and introduction. Not legal or employment advice.