On a Wednesday morning in late August 2025, a nurse named Go Kyoung-min stood in a conference room inside Korea’s National Assembly. She was 34, a mother of twin daughters, and an employee of Severance Hospital in Seoul. Most of her career had been spent rotating through 12-hour shifts. She worked in a country where staying late is still treated as moral evidence of a good worker. However, for six months in early 2025, she had done something almost no Korean nurse before her had done. Specifically, she had worked four days a week instead of five — an early test case for the Korea 4.5 day workweek model. Now she was at the National Assembly to tell lawmakers what happened next.
What happened was the kind of result Korean labor economists had stopped expecting. According to reporting by Al Jazeera, nurse turnover at participating Severance wards collapsed dramatically. Specifically, the rate dropped from 19.5 percent to 7 percent for staff with under three years of service. Sick leave dropped by an average of one full day per nurse. Patient safety indicators improved. Job satisfaction scores rose across every measured dimension. Furthermore, none of this required the hospital to lower the standard of care.
This is the part of the Korea 4.5 day workweek story that almost no foreign coverage has caught. The OECD has long ranked Korea among the most overworked countries in the developed world. Yet the country is now, quietly, running the largest live experiment in shorter working hours anywhere in Asia. Meanwhile, beginning in January 2026, that experiment moves from pilot status into national policy.
For foreign investors and operators, this is not a soft cultural story. Rather, it is a structural shift in the world’s 13th-largest economy. Specifically, it touches Samsung, Hyundai, the entire Korean semiconductor stack, and every foreign multinational with a Seoul office. Furthermore, every expat thinking about a Korean F-2 visa now has reason to track it. As a result, anyone allocating capital or talent to Korea over the next five years has to understand it.
Start with the gap. In 2024, the average South Korean worked 1,865 hours, according to the OECD. The OECD average that year was 1,736 hours. In other words, Koreans put in 129 to 142 more hours per year than the typical worker across the developed world. The exact gap depends on which baseline year you anchor against. That extra time amounts to roughly three full additional 40-hour weeks of labor every year, every worker, for a generation.
For neighbors, the contrast is sharper still. Japanese workers — long the cliché reference point for Asian overwork — clocked roughly 1,617 hours in 2024. In short, Korean employees outwork their Japanese counterparts by nearly 250 hours a year. That is an extraordinary figure for an economy whose entire postwar identity was built on catching up to Japan.
The productivity side of the ledger is more uncomfortable. According to figures cited by the Korea Employers Federation and reported in The Korea Times, Korea’s hourly labor productivity stood at $54.60 in 2023. That is only 77.4 percent of the OECD average. It also sits well below the G7 average of $80.60. In essence, Koreans work longer to produce less per hour. This is a structural problem for a country whose economic identity rests on export competitiveness. Notably, it has nothing to do with motivation and everything to do with the design of the workday itself.
This is the policy diagnosis that President Lee Jae-myung carried into office in June 2025. Indeed, his administration has framed the Korea 4.5 day workweek push as productivity reform first and welfare reform second. The argument runs like this: if you cannot grow the labor force, you have to make each working hour count more. Korea cannot grow the labor force — fertility hit 0.75 in 2024. Therefore, you cap the hours, raise the per-hour value, and use the freed time to address the country’s other crises. In particular, those include sleep deprivation, low birth rates, and chronic burnout among the MZ generation.
The rollout is structured deliberately. The Ministry of Employment and Labor has drawn up a roadmap, and the Korea workweek reform unfolds in three stages.
The first stage closed in late 2025 and focused on legislation. Specifically, the government submitted the Reduced Working Hours Support Act to the National Assembly. The bill provides tax credits and direct subsidies to companies that cut working hours under a new framework. In addition, the government revised 66 supporting decrees and queued another 110 legislative proposals through 2026.
The second stage begins now, in 2026. From January, small and midsized companies can claim direct cash subsidies under the Korea reduced workweek model. Specifically, payments range between 200,000 and 800,000 won per worker, depending on company size and hiring activity. Furthermore, in the same year, the government plans to prohibit the widespread use of the comprehensive wage system. This is a controversial Korean payroll structure. It bundles overtime and holiday pay into a single fixed monthly salary. Critics have long argued the system functions as a license for unlimited unpaid overtime. As a result, eliminating it would mean every additional hour must now be compensated separately.
The third stage, scheduled for 2027 and beyond, opens broader social dialogue. The aim is to extend the Korea 4.5 day workweek to the full national labor force. President Lee has been explicit that the eventual destination is a 32-hour, four-day workweek. However, that destination only arrives after a phased transition that respects sectoral differences.
For context, Korea’s last major working-time reform — the move from a six-day to a five-day workweek — took roughly four years. The proposal first came under President Kim Dae-jung in 2000. Enactment followed under his successor Roh Moo-hyun. Therefore, labor economists generally expect a similar four-to-five-year arc for full national adoption of the 4.5-day model. Pilot programs and subsidized pathways will carry the bulk of the transition.
The 2026 subsidy structure is the operational core of the Korea four-day workweek transition. Companies with fewer than 50 employees can claim up to 600,000 won per worker per quarter. In addition, they can receive 800,000 won per new hire brought on to absorb the reduced hours. Firms with 50 to 300 employees qualify for subsidies covering up to 100 workers each. As reported by The Korea Herald, eligibility is reviewed by employment insurance investigators specifically to prevent abuse. This is a rare design feature. Notably, it addresses the historical concern that small businesses might collect subsidies without actually shortening hours.
For a 200-person mid-market firm, the math works out to roughly 240 million won per year in direct subsidies if maximally utilized. That figure is meaningful but not transformative. In particular, it covers a portion of the labor costs associated with hiring additional staff to fill the lost workdays. However, it does not eliminate the underlying productivity question. As a result, the policy’s success depends almost entirely on whether companies can maintain output with fewer hours. This is the so-called “100-80-100” model first popularized in Iceland.
The subsidy is also scaled deliberately to favor smaller firms. Notably, this is where the 5.2-day workweek (or, in many cases, the de facto 5.5-day workweek) is most entrenched. Korea’s chaebol and major IT firms have already moved partway. SK Telecom and POSCO allow employees every other Friday off when weekly hours are met. Samsung Electronics permits one Friday off per month under a similar program. By contrast, a furniture maker in Daegu or a packaging firm in Gumi has had no equivalent flexibility. Furthermore, those smaller firms have had no resources to test one. The 2026 subsidy is designed to close exactly that gap.
Three early adopters have produced the most cited datasets in the Korean policy debate.
Cafe24, the country’s leading e-commerce solutions platform, moved to a full four-day workweek in July 2025. Importantly, the company did so without cutting wages or total weekly hours. In effect, employees compress 40 hours into four longer days rather than reducing absolute output. According to public statements from management, retention metrics have improved meaningfully. Moreover, recruitment for engineering roles has become easier. Specifically, candidates explicitly weigh the four-day schedule against competing offers in Pangyo and Gangnam.
The Severance Hospital pilot at Yonsei University Health System tells a different story. Specifically, that pilot involved a true reduction in hours — 32 hours per week versus 40. The trade-off was a 10 percent wage cut. Even with the pay reduction, the briefing at the National Assembly found striking results. Participating nurses reported higher job satisfaction, lower stress, reduced sick days, and significantly lower turnover. As a result, 30 nurses across three wards now operate under the model. Furthermore, the hospital’s labor union has pushed to expand the program.
That said, the financial cost is real. Yonsei’s HR director has publicly stated the scaling cost. Permanent hospital-wide adoption would run roughly 100 million won per ward per year in additional labor expenses. Over three years of pilot, total program spending reached approximately 1.2 billion won. Meanwhile, hospital management has been clear about the dependency. Specifically, government subsidy support is “absolutely necessary” for the model to be financially sustainable at scale.
In Gyeonggi Province — Korea’s most populous region, surrounding Seoul — the provincial pilot launched in mid-2025 with 83 participating companies. Specifically, those firms can choose between a biweekly four-day week, a 35-hour week, or a half-day every Friday. Roughly half of participants employ fewer than 40 people. Indeed, the program runs through 2027. As such, it serves as the de facto blueprint for the 2026 national subsidy structure.
Korea’s chaebol are not formally opposing the Korea labor reform — but they are not embracing it either. Instead, they are running selective trials that allow them to claim cultural alignment with the policy without committing operationally.
Samsung Electronics’ “one Friday off per month” program is the cleanest example. Specifically, it offers employees a high-visibility benefit at minimal operational cost. Likewise, SK Telecom’s “Happy Friday” runs every other week. Furthermore, POSCO operates a similar biweekly system. Each of these firms has positioned the program as evidence of MZ-generation responsiveness while preserving full 40-hour weekly output.
This is rational. For an export-led semiconductor or shipbuilder, the costs of true workweek reduction are concentrated in cycle time. As Park Nam-gyoo, a business professor at Seoul National University, told Al Jazeera, “South Korea is an export-led economy. It faces an uncertain future if it fails to remain competitive globally.” The chaebol’s hedge is a calculated bet that the political momentum for the Korea 4.5 day workweek continues, but that the operational mandate stays voluntary for large firms with global supply commitments.
For foreign multinationals operating in Korea, the chaebol playbook is the most relevant template. Specifically, partial adoption — biweekly Fridays, monthly half-days, or compressed-hour Fridays during low-load weeks — captures the recruitment benefit without requiring a full operational redesign. The 2026 subsidies are not directly available to foreign-controlled subsidiaries above 300 employees in any case. However, the cultural pressure to adopt some version of the policy will be substantial.
The opposition is not subtle. In the months leading up to the 2025 election, the heads of Korea’s five major business federations — the Korea Chamber of Commerce and Industry, the Korea Enterprises Federation, the Federation of Korean Industries, the Korea International Trade Association, and the Federation of Middle Market Enterprises — met directly with then-candidate Lee Jae-myung. Their message was unified: a mandatory Korea workweek reform would deepen the productivity gap between large and small firms and weaken global competitiveness.
The data they cite is uncomfortable. As noted earlier, Korean hourly productivity sits at $54.60, well below the G7 average. Furthermore, according to the Korea Federation of SMEs, 42.4 percent of Korean SMEs already report struggling under the current 52-hour weekly cap. Of those, 39.6 percent cite labor shortages as the binding constraint. Meanwhile, 32.3 percent point to scheduling inflexibility. In addition, 20 percent flag the cost of additional hires.
In other words, the businesses most likely to benefit from the 2026 subsidies are also the ones most exposed to the underlying labor market shortage that makes implementation hard. Subsidies cover wages — but they do not produce skilled workers who do not exist.
The Korean Society of Occupational and Environmental Medicine, on the other side of the debate, has warned in a published statement that long working hours correlate directly with cerebrovascular and cardiovascular disease risk. Specifically, weeks exceeding 60 hours are flagged as workload aggravating factors under existing Korean industrial accident law. Therefore, from a public health perspective, the case for shorter hours is straightforward.
Reconciling these two arguments — productivity preservation versus health protection — is the central political challenge of the next two years.
Korea is not alone. Specifically, the global four-day workweek movement has produced enough longitudinal data over the past decade to make several conclusions clear.
Iceland’s pioneering trials between 2015 and 2019 covered roughly 2,500 workers — about 1 percent of the country’s labor force — across municipal offices, hospitals, schools, and childcare facilities. Hours dropped from 40 to 35 or 36 per week without pay cuts. Productivity held steady or improved across most workplaces. As a result, by the post-trial period, roughly 86 percent of Iceland’s workforce had moved to permanent reduced-hour contracts through collective bargaining. Meanwhile, Iceland’s labor productivity growth has averaged 1.5 percent annually since the trials — the highest among Nordic countries.
The United Kingdom’s 2022 pilot ran for six months across 61 companies. In particular, 92 percent of participating firms chose to keep the four-day schedule permanently after the trial ended. Stress and burnout fell measurably. Voluntary turnover dropped 57 percent on average across participants.
Belgium took a different path. Specifically, the country legislated a worker right to request a four-day compressed workweek in 2022. Importantly, employees can compress 40 hours into four 10-hour days without changing total output. Although adoption has been slower than in Iceland or the UK, the legal architecture is in place.
For Korea, the lesson from these precedents is operational, not philosophical. Notably, every successful program has paired hour reduction with explicit productivity reorganization — fewer meetings, asynchronous communication, more ruthless prioritization. In contrast, programs that simply removed hours without redesigning the workday tended to underperform. Therefore, the Korean 2026 policy will likely live or die on whether participating Korean SMEs can actually execute the operational redesign that the model requires. The subsidy cushions the financial transition. However, it does not solve the design problem.
For the executive running a Korean subsidiary, four practical points matter.
First, the 2026 subsidies are formally restricted to Korean-registered firms with fewer than 300 employees. Specifically, foreign-controlled subsidiaries above that threshold do not qualify for direct cash support. However, partial program adoption — biweekly Fridays, monthly half-days — remains entirely available and is increasingly expected by Korean talent.
Second, the comprehensive wage system ban scheduled for 2026 will materially affect any foreign operation that has structured Korean compensation around the bundled-overtime model. As a result, payroll redesign should already be underway. In particular, this is true for any firm with engineering or manufacturing functions in Korea, where the comprehensive wage system has historically been most prevalent.
Third, recruitment dynamics are shifting fast. According to a Blind survey of 13,000 Korean workers cited in The Korea Herald, 78 percent support the Korea 4.5 day workweek. For comparison, the same survey three years earlier showed roughly 60 percent support. As a result, the schedule is becoming a primary recruitment differentiator for engineering, design, and operations roles in Seoul, Pangyo, and Daejeon. Firms that ignore this signal will pay for it in offer-acceptance rates.
Fourth, the political durability of the program is high. Even the conservative People Power Party offered its own version of workweek reform during the 2025 campaign. Furthermore, both major umbrella unions — the Korean Confederation of Trade Unions and the Federation of Korean Trade Unions — have endorsed the Korea workweek reform. In short, the policy enjoys cross-coalition support that is rare in Korean politics. Therefore, it is unlikely to reverse meaningfully under any plausible 2027-onward government.
The deeper question is what happens after 2027, when the formal social dialogue on national rollout begins.
If adoption tracks the Iceland model, Korea ends the decade with most of its workforce on a 36-hour effective week. Productivity per hour rises to close some portion of the OECD gap. Furthermore, the demographic crisis remains, but burnout costs decline measurably. Meanwhile, the export economy adapts — somewhat painfully — to a higher per-hour wage structure that pulls automation forward. Indeed, Seoulz’s coverage of Korea’s robot density and humanoid policy suggests this is exactly the substitution path the government has already wired into industrial strategy.
If adoption stalls, Korea ends up with a two-tier labor market. Specifically, large firms and public sector employees enjoy full Korea reduced workweek coverage, while SMEs revert to the 52-hour cap with patchy enforcement. In that scenario, the productivity gap widens. Furthermore, the political backlash builds. Consequently, the 2027–2029 election cycle becomes a referendum on whether the program is expanded, retrenched, or abandoned.
Either path is a major story for the world’s 13th-largest economy. In particular, both paths run through the small, unfashionable companies that will or will not collect those 200,000-to-800,000 won subsidies starting in January 2026. The chaebol get the headlines, as always. However, the actual experiment is happening in the factory in Gumi, the marketing agency in Seongsu, and the dental clinic in Suwon.
For now, Go Kyoung-min is back on a five-day rotation. The Severance pilot ended after six months by design, with each cohort cycling out so the program could expand to new participants. She has stated publicly that there were “absolutely no drawbacks” to the four-day schedule. Indeed, her only regret was that more colleagues could not participate.
That sentiment, multiplied across 28 million Korean workers, is what the Korea 4.5 day workweek is ultimately measuring against. Specifically, it asks whether a country built on long hours can accept that the long hours themselves were the problem. We will start finding out in January.
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