Japan's 2024 Problem One Year In — Working Hour Caps on Trucking, Construction, and Doctors and the Gap Between Rule and Reality

On April 1, 2024, Japan ended the five-year exemption period for three sectors — commercial driving, construction, and medical doctors — and brought them under the overtime cap regime that had governed the rest of the economy since 2019. More than a year later, the gap between rule and reality is still visible in each of the three.

In commercial driving, annual working hours fell to 2,364 hours (down 3.4% year-on-year) after the 960-hour overtime ceiling took effect. The figure is still 15.2% longer than the all-industry average. 22.9% of carriers still had drivers exceeding the 960-hour ceiling, and 15.7% reported turning down shipper requests.

In construction, the Japan Federation of Construction Contractors reported that 61.0% of member-company sites achieved eight or more closed days per four-week cycle — 72.8% in civil engineering and 50.2% in building construction. But Teikoku Databank recorded 2,021 construction-industry bankruptcies in 2025 — up 6.9%, a fourth straight annual increase and a ten-year peak, with labor-shortage-driven bankruptcies crossing 100 for the first time (113 cases).

For doctors, the regime is two-tiered — an A-level 960-hour ceiling for general practice, and a B / linked-B / C ceiling of 1,860 hours for emergency, perinatal, and training-track physicians. Hospitals have increasingly used the on-call duty permit system to move night and weekend duty off the labor-time clock, but the Ministry of Health, Labour and Welfare has warned that permits can be revoked if post-approval reality looks like normal work. The 1,860-hour ceiling itself sits well above the karoshi line (80 hours of overtime per month × 12 = 960 hours) used by labor authorities to assess fatal overwork. Continuous duty time limits were also set — except when an on-call duty permit applies, 28 hours for A-tier, B-tier, linked-B-tier, and C-2-tier physicians, and a 15-hour rule for C-1-tier clinical residents (extendable to 24 hours when alignment with supervising physicians requires it) — reflecting differences in clinical workflow.

The shared finding across the three sectors is that regulation has succeeded in making the legal floor visible, but improvement beyond that floor falls outside its reach. None of the three has yet caught up to the all-industry working-time average a year into enforcement.

Logistics (Commercial Driving)

960 hrs/year

Reality (1 year in)

Actual 2,364 hrs (15.2% above all-industry avg)

Cost pass-through

Shipper → Consumer

Remaining friction

Standard rate +8% set, but actual rate rose only 3.5% (~44% pass-through)

Construction

720 hrs/year, <100 hrs/month

Reality (1 year in)

61.0% of sites closed 8+ days per 4 weeks (Civil 73% / Building 50%)

Cost pass-through

Client (Public + Private)

Remaining friction

Bankruptcies 2,021 (+6.9% YoY, 10-yr peak); labor-shortage bankruptcies crossed 100 (113)

Medical Doctors

A-level 960 hrs / B & C-level 1,860 hrs

Reality (1 year in)

On-call duty permits used to move night/holiday duty off labor-time clock

Cost pass-through

Medical fee schedule → Public funds + Patients

Remaining friction

1,860 hrs exceeds the karoshi line (960 hrs/yr); B-tier dissolution targeted for FY2035

* Sources: SOMPO Institute Plus (Apr 2025), Japan Federation of Construction Contractors Action Plan Report (FY2024), Teikoku Databank Construction Bankruptcy Trends (2025), MHLW Medical Working-Style Reform (2024). The three sectors share the form of an 'hours cap' but diverge in who absorbs the compliance cost — generating different pass-through difficulty and speed.

The Working-Style Reform Act of 2018 introduced statutory overtime caps with criminal penalties. Three sectors — commercial driving, construction, and physicians — were granted a five-year transitional exemption on grounds of operational specificity, with the main rules taking effect on April 1, 2024.

The shape of the cap is not identical across the three. Commercial driving sits under a special-clause cap of 960 hours per year (excluding holiday work). Construction operates under the general special-clause framework — 720 hours per year, under 100 hours in any single month, and an 80-hour multi-month average (with holiday work included for these monthly limits) — with disaster recovery and reconstruction work exempt from the monthly and multi-month caps. For doctors, the Ministry of Health, Labour and Welfare defined four tiers: A (clinical physicians at large, 960 hours), B (emergency and perinatal interim measure for regional medicine, 1,860 hours), linked-B (doctors dispatched from university hospitals, 1,860 hours), and C (residents and specialty trainees, 1,860 hours). The ministry has set an explicit policy target of phasing out the B tier by the end of fiscal 2035.

The logistics side comes bundled with companion policies. The Ministry of Land, Infrastructure, Transport and Tourism revised the standard freight rate upward by 8% in March 2024. The Revised Logistics Efficiency Act, effective April 2025, then placed a duty-of-effort obligation on all shippers and carriers to cut 125 driver-hours per year and lift load efficiency to 44%. From April 2026, a stricter mandate kicks in for designated large shippers.

Construction's rules reach beyond hours and into project terms. Article 19-5 of the Construction Business Act bans contracts at "unreasonably short" timelines, putting responsibility on the client side. The public-works standard labor wage has risen 22.9% since 2021, providing a floor for wage uplifts.

For doctors, reform must reconcile working-hour reduction with maintaining regional medical access. The on-call duty permit lifts night and weekend duty off the labor-time clock — but only if the duty genuinely involves "almost no work." GemMed reports that MHLW continues to issue notices on enforcement after permit approval.

Running across all three sectors is a divergence in who absorbs the compliance cost — shippers and end consumers for logistics, public funding and patients through the medical fee schedule for medicine, public and private clients for construction. Each runs through a different institutional channel, and each carries its own pass-through difficulty. Asymmetric bargaining power against shippers, the cadence of medical-fee revisions, and the gap between public procurement discipline and private construction practice each generate institutional friction that has not been resolved a year in.

Laid side by side, the three sectors share the form of an "hours cap" but diverge in how the cost actually flows through.

In logistics, the freight-rate revision has had a muted effect. Against the 8% upward revision in the standard rate, actual market freight rates rose only about 3.5% by January 2025. Asymmetry in negotiating power between carriers and shippers held the pass-through to less than half of the official figure. Driver wages remain 13% below the all-industry annual average and 26% below on an hourly basis. The end-of-line burden falls on consumers, where redelivery — a key driver of waste — sits at 10.2% as of October 2024 against a 6% target. Behavioral change is incomplete.

In medicine, cost pass-through runs through the publicly set fee schedule. Unless the next medical-fee revision reflects the labor cost of compliance, hospitals are caught between shortening hours and maintaining solvency. The regional impact depends on how on-call permit uptake intersects with physician maldistribution. Small and mid-sized hospitals in rural areas face difficulty securing on-call doctors, and the burden surfaces as restrictions on emergency intake or outpatient services that ultimately reach patients.

In construction, the report identifies a structural mismatch where surging labor costs, extended project timelines, and rising material prices are not being passed through to contract unit prices. By debt size, small-scale insolvencies with liabilities under 50 million yen account for 57.7% of the total — the compliance burden lands on small operators. The 20-point gap between civil engineering (72.8%) and building construction (50.2%) in two-day-off-week achievement points to a discipline gap between public-sector and private-sector procurement. Public works carry institutionalized timeline-setting and labor-wage standards, while private-sector building work still operates under pressure for short timelines from clients, with the cost squeeze landing on specialty subcontractors (rebar, formwork, mechanical, electrical). The Nikkenren membership is dominated by large general contractors, so the 61.0% headline figure is not the industry-wide average — smaller specialty subcontractors find site-closure compliance much harder.

The operational gap in physician work concentrates around on-call permit status. Even at hospitals with the permit, emergency intake and sudden patient deterioration can produce "ordinary work" that must be counted as labor time and that may trigger permit revocation. The permit functions as a regulating valve between labor-time enforcement and regional medical-access maintenance, but tighter enforcement makes night-duty staffing harder at B-tier hospitals. At small and mid-sized rural hospitals, when on-call doctors cannot be secured, the options narrow to capping emergency intake, shortening outpatient hours, or closing specific clinical departments. The physician-distribution policy moves on a separate track, and reconciling working-time enforcement with workforce supply remains the live problem a year into the new regime.

What the three sectors share is a common displacement pattern. In trucking, charter and subcontracting arrangements make actual hours hard to count. In medicine, the on-call permit shifts night duty out of the labor-time category. In construction, the one-person subcontractor — an individual proprietor structure — sits outside hour-based regulation altogether. The workers most in need of protection sit in environments where the rules reach least — the same concentric structure that an earlier column on Japan's interval regulation debate identified in a different domain.

The hours cap fixes a legal minimum. Anything below the cap becomes visible as a violation. But improvement above the cap — pay, work intensity, career sustainability — falls to other policy tools.

The 2030 connection remains live. The Ministry of Land, Infrastructure, Transport and Tourism estimates that without countermeasures, about 14% of transport capacity (equivalent to 400 million tons) will be short in FY2024 and about 34% (equivalent to 900 million tons) in FY2030. The Japan Federation of Construction Contractors projects a shortfall of up to 1.29 million skilled construction workers by FY2035. Nomura Research Institute frames 2024 as a way-station to a larger 2030 problem in which efficiency reform and industry restructuring must move in parallel.

The open question is who absorbs the cost of the hours reduction. Consumers must accept slower delivery and fewer redeliveries; patients must accept tighter outpatient hours and emergency restructuring; clients must accept longer timelines and higher unit costs. The structural test running through all three sectors is whether working-time regulation can be treated not just as worker protection but as a reconsideration of demand-side discipline — what households, payers, and procurement processes consider acceptable in the first place.

Enforcement-side practice is the other axis to watch. Labor Standards Inspection Office on-site audits, the operational guidance for the on-call permit standard, and the new directive authority over designated large shippers under the revised Logistics Efficiency Act — at the enforcement layer, whether "the legal minimum" actually holds will determine the credibility of the regime. The gap a year in is a measure of the distance between law on the books and law in practice, and the rate at which that distance can be closed is the metric by which the 2024 transition will be judged as preparation for the 2030 problem.

Related columns

• The 14-day continuous-work cap and inter-shift interval — what Japan's labor law debate is asking of working-life design
• The structure of Japan's care worker shortage
• The wage-suppression paradox under labor shortage
• Nurse attrition and the limits of front-line healthcare

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References

Overtime Cap for Commercial Driving, Construction, and Medical Doctors — Ministry of Health, Labour and Welfare. Ministry of Health, Labour and Welfare

Has Working-Style Reform for Truck Drivers Progressed Under Japan's 2024 Logistics Problem? — SOMPO Institute Plus. SOMPO Institute Plus

On the 2024 Logistics Problem (Reference Material 1) — Ministry of Land, Infrastructure, Transport and Tourism. Ministry of Land, Infrastructure, Transport and Tourism

Working-Style Reform for Medical Doctors — Ministry of Health, Labour and Welfare. Ministry of Health, Labour and Welfare

Action Plan Report on Two-Day-Off Week Implementation — Japan Federation of Construction Contractors. Japan Federation of Construction Contractors

Construction Industry Bankruptcy Trends (2025) — Teikoku Databank. Teikoku Databank

The Logistics Crisis Beyond 2024 and How to Address It — Nomura Research Institute. Nomura Research Institute, Chiteki Shisan Sozo

Further reading