Invest1 publisher3 min readPublished
Korea's chip sector produced 48.8% more value added with 2,900 fewer workers
South Korea's chip recovery arrived in the Bank of Korea's 2024 input-output tables as more output, much more value added and a slightly smaller payroll. The tables attribute the boom to a recovery in chip demand.
The Investor · Invest desk
What happened
- Output in South Korea's computer, electronics and optical equipment sector, which includes semiconductors, rose 24.9% to 399.31 trillion won in 2024, on Bank of Korea input-output tables released on the 21st.
- Full-time equivalent employment in the sector fell by about 2,900, to 386,300 workers from roughly 389,200 in 2023.
- Economy-wide full-time equivalent employment fell 28,000 to 25.96 million, with 60,000 more permanent employees against 55,000 fewer temporary and daily hires and 33,000 fewer self-employed and unpaid family workers.
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Why it matters
- constraint A billion won of demand routed through this sector buys 2.87 induced workers, 37% of the all-industry average of 7.8, so chip demand no longer delivers the headcount an employment target needs and the two have to be pursued by separate means.
- cost Run 2024's output through 2023's inducement coefficient and the year is short roughly 300,000 induced jobs, a shortfall absorbed by an economy whose total headcount shrank while chip income grew.
- contradiction The central bank credits the chip rebound with reshaping the 2024 structure and also reports semiconductor manufacturing hiring rising since early 2025, so one year of tables cannot settle whether the jobs link is broken or merely late.
Divide the Bank of Korea's published value added by its published headcount and the sector produced about 378 million won per full-time equivalent worker in 2024, up from about 252 million a year earlier, a gain of 50% [5]. The margin moved with it. Value added was 36.6% of output in 2024 against 30.7% in 2023 [4], and of the 79.5 trillion won of additional output, 47.9 trillion came through as value added [1][2]. So 60% of each extra won of output turned into value added, against 31% across the 2023 base [3][4].
Hold 2023's employment coefficient of 1.22 workers per billion won and 2024's 399.31 trillion won of output would have needed roughly 487,000 workers, about 101,000 more than the sector actually employed [6]. That 101,000 counts no lost jobs; it is 2023's ratio applied to a bigger number.
The Bank of Korea's account attributes the rise in output and value added to a recovery in chip demand, and says that because chips are capital- and technology-intensive the export boom did not spill over into job growth; artificial intelligence is not mentioned [14]. More of Korea's demand did move offshore: exports were 16.1% of total demand in 2024 against 14.7% in 2023, and 31.8% of final demand against 29.4% [8].
The central bank said the chip sector's strong rebound from the previous year's slump had a major impact on changes in the economic structure in 2024, and also said that because semiconductors generate relatively few jobs, the number of workers whose employment was induced stayed close to the prior year's level despite robust exports [10]. On timing it hedged. A Bank of Korea official said the number of workers in semiconductor manufacturing has been rising since the start of 2025 and that the impact of the chip boom on employment could widen further [13].
The cyclical reading has support. An employment coefficient with output in the denominator falls whenever output moves faster than payroll [4], and this sector's output moved off a slump [10]. Fab construction and equipment installation pay out over several years, and the central bank flagged that lag [13]. Manufacturing as a whole moved the same way. The employment-inducement coefficient for manufactured goods fell about 7.8%, to 4.7 from 5.1 [6][8]. That is the same direction as the sector's 20.8% drop, at a fraction of the size [5].
The structural version of the story needs the 2025 table. If output grows again and the employment coefficient falls again from 0.97, 2024 was not a rebound artefact [4]. I would expect it to settle near 1 and not climb back to 1.22 [4]. What would show that expectation to be wrong is a sustained rise in semiconductor manufacturing employment through 2025 and 2026 [13], with the inducement coefficient recovering toward 3.62 [5].
What to watch
- The 2025 input-output tables: whether the sector's employment coefficient falls again from 0.97 in a second year of output growth.
- Monthly South Korean semiconductor manufacturing employment, which a Bank of Korea official said has been rising since the start of 2025.
- Whether the manufactured-goods employment-inducement coefficient keeps sliding from 4.7: a further fall would make the 2024 drop broader than chips.