Japanese manufacturing has failed to fully benefit from the AI boom, with labor—not insufficient demand—as the key bottleneck

Overview

The report explains a central paradox: global AI investment has boosted demand for semiconductors, memory, and electronic equipment, yet Japanese manufacturing has not expanded output in tandem as South Korea and Taiwan have. Deutsche Bank believes that past underinvestment is a constraint, but the more immediate and fundamental bottlenecks are insufficient labor and the failure of Japanese companies and the labor market to rapidly allocate workers to high-growth industries.

Core views

First, trade and production data show that Japan is not facing insufficient demand but rather a supply constraint characterized by "demand without increased output." Since 2025, export volumes in South Korea and Taiwan have increased significantly, while Japan's have remained broadly flat; export prices rose in all three markets over the same period, indicating strong AI-related demand. The increase in Japan's electronic component and equipment export prices has even exceeded Taiwan's, and the value of integrated-circuit exports has also risen markedly, but export volumes have stagnated. Production has similarly diverged: output of electronic components and equipment in South Korea and Taiwan has grown rapidly since 2024, while Japan's remains below its 2021 peak. Japan's real exports measured by value added continue to grow, suggesting that companies are concentrating resources on higher-value-added products and pursuing a "low-volume, high-margin" strategy rather than seeking greater market share through scale expansion. Insufficient capital investment is the first layer of constraints. The capacity index for Japan's electronic component and equipment industry has remained broadly stagnant since the 2008 global financial crisis and has even declined in recent years, while South Korea has continued expanding capacity. The report argues that management in Japan's semiconductor industry remains influenced by the experience of the 2000s, when large-scale investment was followed by a market downturn, price collapse, massive losses, and excess capacity. Combined with doubts about the durability of future demand, this has made companies reluctant to undertake large-scale capacity expansion. Such caution has left Japan without sufficient new capacity as AI demand rises and reinforced its low-volume, high-margin operating strategy. However, the underutilization of existing equipment shows that capital is not the whole answer. Although capacity utilization in Japan's electronic component and equipment industry has risen since 2025, it remains below its historical peak. The Bank of Japan's Tankan survey further shows that the production capacity DI for the electrical machinery industry remains positive, meaning that companies overall still perceive excess equipment, while the employment conditions DI is deeply negative, indicating severe labor shortages. The gap between the two has become persistent since Japan's labor shortages intensified in 2015. The report therefore concludes that Japan's more prominent problem today is not "a lack of equipment," but "equipment without enough people to operate it." Labor shortages directly suppress output partly because capital and labor have low substitutability in the electrical machinery industry. Analysis in the Bank of Japan's January 2025 Outlook for Economic Activity and Prices shows that the elasticity of substitution between capital and labor in this industry is among the lowest in manufacturing, making it difficult for companies to simply replace workers with more machinery. Work-style reforms since 2019 have reduced working hours, and productivity improvements have not fully offset the decline in hours, which may also constrain total output. Meanwhile, component supply chains and the construction industry responsible for building factories also face labor shortages, causing delays in procurement, construction, and equipment installation and spreading production constraints from individual factories across the entire industrial chain. Labor shortages also suppress capital investment in turn. The Development Bank of Japan's "Survey of Planned Capital Spending for FY2026" shows that among important conditions for increasing domestic investment, "alleviating supply constraints such as labor shortages" was the factor most frequently selected by nonmanufacturing companies. It ranked third among manufacturers, behind only "higher growth expectations" and "advantages in technology and talent," and was cited more frequently than expectations of government support. The report therefore points out that Japan has not established a virtuous cycle in which labor-saving investment resolves worker shortages; instead, labor shortages themselves are weakening companies' willingness to invest. This behavior is not an isolated phenomenon of the AI cycle. During the yen depreciation phase that began in 2013, Japanese companies likewise did not fully exploit their price competitiveness by cutting export prices in local-currency terms to expand market share. Instead, they maintained local-currency prices and prioritized profit improvement, ultimately producing "a weaker yen without growth in export volumes." The report argues that this shares a common root with the current AI boom's low-volume, high-margin strategy: when faced with expansion opportunities, Japanese companies are unwilling or unable to scale rapidly. The deeper problem is inefficient allocation of labor resources, not merely a decline in the total labor force. Institutional practices such as lifetime employment restrict cross-industry mobility, while companies are unwilling to compete for talent through substantial wage increases because of uncertainty about future demand, preventing labor from moving from low-productivity sectors into AI-related, high-productivity growth industries. Comparisons among Japan, South Korea, and Taiwan show that Japan's labor constraints have a long-term structural foundation. Japanese manufacturing employment peaked in 1992 and subsequently declined by approximately 35%, remaining broadly flat in recent years. Manufacturing employment in Taiwan has trended upward, while South Korea's has remained broadly stable since the 1997 Asian financial crisis. Manufacturing's share of employment has declined in both Japan and South Korea, reflecting similar trends toward service-oriented economies, but Taiwan has maintained a relatively high manufacturing employment share despite comparable income growth. Demographic factors have widened the gap further: Japan's working-age population aged 15 to 64 peaked in 1995, whereas South Korea's continued growing until 2017. Although South Korea's working-age population share has also begun to decline, it remains near Japan's previous peak level. The supply of highly skilled talent represents another gap. South Korea ranks second among OECD members in the proportion of tertiary education graduates choosing STEM fields, while Japan is below the OECD average. In the relevant data table, Japan's share rose from 21.0% in 2015 to 21.8% in 2023. Although Taiwan is not included in the same database, its government survey shows that 34% of students study STEM subjects. The report therefore argues that labor shortages in Japanese manufacturing are not merely the result of population aging or deindustrialization but are also related to the education system and the development of specialized talent. The policy implication is that increasing financial investment alone may be insufficient to restore Japan's manufacturing expansion capacity. The Takaichi government's new growth strategy plans to direct massive domestic investment into 17 strategic fields, including manufacturing. However, the report warns that if labor market rigidity, talent shortages, and resource misallocation are not addressed, this investment may fail to translate into genuine production capacity, limiting the policy's effectiveness. For Japan to capitalize more fully on the AI boom, it needs not only equipment investment but also improvements in labor mobility, talent acquisition, and the supply of highly skilled workers, enabling capital, personnel, and growth industries to be allocated in tandem.

Analysis framework

The report first compares export volumes, export prices, export values, and industrial production performance in Japan, South Korea, and Taiwan since 2024—2025. It uses the divergence between volumes and prices to rule out the explanation that products lack demand or have become obsolete and identifies the presence of supply constraints in Japan. The report then divides supply constraints into capital and labor components. It examines capital shortages through capacity indices, historical investment behavior, and capacity utilization, before combining the Bank of Japan's Tankan survey data on capacity DI and employment DI with capital-labor substitution elasticity, changes in working hours, and labor shortages across the industrial chain to conclude that labor is the more immediate bottleneck. Finally, the report compares Japan, South Korea, and Taiwan from the perspectives of corporate decision-making, labor mobility, demographics, deindustrialization, and STEM education. It elevates factory-level worker shortages into a macroeconomic resource-allocation problem and uses this framework to assess whether large-scale investment under Japan's growth strategy can translate into actual production capacity.

Methodology notes

• Industry/Sector Analysis FrameworkSupply-demand framework

  Analysis of demand growth and supply constraints

  Using the combination of rising prices and stagnant production and export volumes, the report concludes that Japan's AI-related manufacturing industry faces a constraint resembling a near-vertical supply curve rather than insufficient end demand.

• Industry/Sector Analysis FrameworkVolume-price decomposition

  Decomposition of export volume, export price, and export value

  The report examines export volumes, prices, and values separately, finding that Japan has primarily benefited from higher prices and greater value added, while South Korea and Taiwan have achieved growth in both volumes and prices.

• Industry/Sector Analysis FrameworkUpstream-Midstream-Downstream Industry Chain Transmission

  Transmission of labor constraints through supply chains and factory construction

  The report examines not only labor shortages within factories but also how worker shortages among component suppliers and in construction constrain final output through delays in procurement, construction, and equipment installation.

• (Out-of-Vocabulary Method)

  Capital-labor substitution elasticity analysis

  Citing Bank of Japan analysis, the report explains that the electrical machinery industry cannot rapidly substitute capital for labor, meaning worker shortages directly reduce capacity utilization and constrain production.

• (Out-of-Vocabulary Method)

  Structural comparative analysis of Japan, South Korea, and Taiwan

  The report compares manufacturing employment, deindustrialization, working-age populations, and STEM talent supply across the three markets to identify the distinctive nature of Japan's labor bottleneck relative to South Korea and Taiwan.

Key data

• Japan's production of electronic components and equipmentBelow the 2021 peakRelated production in South Korea and Taiwan has grown significantly since 2024
• Divergence in export volumes among Japan, South Korea, and TaiwanSince 2025, Japan has remained broadly flat, while South Korea and Taiwan have grown significantlyExport prices rose in all three markets over the same period, indicating strong demand
• Japan's electronic component and equipment capacityStagnant since the 2008 global financial crisis and declining in recent yearsIn contrast to South Korea's continued capacity expansion
• Capacity and employment DI in the electrical machinery industryCapacity DI is positive, while employment DI is deeply negativePerceived excess equipment coexists with severe labor shortages, and this gap has become persistent since 2015
• Japan's work-style reformsSince 2019Working hours have declined while productivity improvements have not fully kept pace, potentially constraining total output
• Japanese manufacturing employmentDown approximately 35% from its 1992 peakBroadly flat in recent years, while Taiwan has trended upward and South Korea has remained broadly stable since 1997
• Year working-age population peakedJapan: 1995; South Korea: 2017Although South Korea's working-age population share has declined, it remains near Japan's previous peak
• South Korea's supply of STEM talentRanked 2nd among OECD membersJapan is below the OECD average
• Share of STEM graduates in Japanese tertiary education21.8% in 202321.0% in 2015
• Share of STEM students in Taiwan34%Based on a Taiwanese government survey
• Fields covered by Japan's growth strategy17 strategic fieldsIncluding manufacturing, with the goal of directing massive domestic investment

Impact & implications

The report argues that the constraints on Japan's AI-related manufacturing industry have moved beyond what can be resolved simply by increasing equipment investment. Unless labor mobility, talent supply, corporate willingness to hire, and worker shortages across the industrial chain improve, new capital may continue to face the problem of underutilized equipment. Japan may also maintain a model driven primarily by improved prices and margins, with limited expansion in output and market share. Accordingly, the effectiveness of Japan's growth strategy will depend on whether capital investment and labor market reforms can advance in tandem.

Risks

• If Japan cannot alleviate structural labor shortages, domestic investment across 17 strategic fields may fail to translate into actual production capacity, limiting policy effectiveness.
• The experience of losses and excess capacity resulting from past semiconductor investment, combined with doubts about the durability of future demand, may continue to suppress companies' willingness to undertake large-scale capacity expansion.
• Labor shortages in supply chains and construction may delay procurement, factory construction, and equipment installation, further constraining production expansion.
• Labor market rigidity and companies' unwillingness to compete for talent through substantial wage increases may continue to prevent workers from moving into AI-related, high-productivity industries.

What to watch

• Monitor whether Japan adopts measures to improve cross-industry labor mobility and alleviate talent shortages in manufacturing.
• Monitor whether domestic investment across 17 strategic fields can simultaneously resolve workforce allocation problems and translate into higher capacity utilization and actual output.
• Monitor the investment and workforce challenges facing Japanese manufacturing; the report states that the next study will further discuss the conditions required for the growth strategy to achieve its objectives.