■ Introduction: A Structural Shift in Japan’s Construction Labor Force

According to the latest statistics released by Japan’s Immigration Services Agency in May 2026, the number of foreign nationals residing in Japan reached 4,125,395 at the end of 2025, marking a year-on-year increase of 9.5% and a new historical high. Within this figure, the number of foreign nationals working in the construction sector under the Specified Skilled Worker (SSW) status reached 51,122—a 32.5% increase from the previous year—surpassing the 50,000 threshold for the first time.

This is far more than a statistical milestone. It signals a fundamental transformation in the workforce structure that supports Japan’s construction industry and, by extension, its social infrastructure. In this article, an immigration-focused gyoseishoshi (administrative scrivener) analyzes the latest data and outlines the key practical points that both foreign residents and employing companies should understand.

■ 1. Breakdown of the 4.12 Million Foreign Residents

By status of residence, the SSW category recorded the most significant growth, increasing 37.2% year-on-year to 390,296 individuals. Of these, 51,122 are in the construction sector: 49,323 hold SSW (i) status (a 28.6% increase) and 1,799 hold SSW (ii) status (an 8.4-fold increase).

By nationality, Vietnamese nationals account for the largest share of SSW (i) holders in construction at 30,159 (up 19.8%), followed by Indonesia (6,638; up 70.1%) and the Philippines (5,635; up 35.8%). Vietnamese nationals also account for the majority of SSW (ii) holders with 1,553 individuals.

■ 2. Trends by Work Category

The construction sector under SSW is divided into three work categories: civil engineering, building construction, and lifeline/equipment installation. The breakdown for SSW (i) is as follows:

  • Civil engineering: 26,369 (up 21.0%)
  • Building construction: 19,593 (up 38.2%)
  • Lifeline / equipment installation: 3,361 (up 40.0%)

The lifeline and equipment installation category shows particularly strong growth, likely reflecting increased demand related to renewable energy projects and aging infrastructure renewal.

■ 3. The Broader Picture: Including Technical Intern Trainees and Engineer/Specialist Statuses

Foreign workers in construction are not limited to SSW holders. Under the Technical Intern Training Program, 113,680 individuals (up 6.7%) work across 22 occupations and 33 work categories related to construction. Leading occupations include scaffolding (32,887), construction machinery operation (21,338), and form work (13,794).

Additionally, 475,790 foreign nationals (up 13.6%) hold the “Engineer / Specialist in Humanities / International Services” status, many of whom work in design and construction management. Combined, the total number of foreign workers supporting Japan’s construction industry is estimated to exceed 200,000.

■ 4. The 8.4-Fold Surge of SSW (ii): A Shift Toward Long-Term Residency

The most symbolic figure in this year’s statistics is the dramatic increase in SSW (ii) holders. Unlike SSW (i), the SSW (ii) status has no upper limit on renewal periods and permits family accompaniment, provided that certain requirements are met. In other words, it is designed for foreign workers who intend to build their lives and careers in Japan over the long term.

From our perspective as practitioners handling these applications daily, the transition from SSW (i) to SSW (ii) represents a turning point for both the worker and the employer. For the worker, it opens the door to long-term career planning; for the employer, it secures skilled personnel as core members of the workforce. However, the application requires careful preparation, including skills examinations, verification of work experience, and documentary consistency.

■ 5. Key Compliance Points for Foreign Residents

(1) Managing the period of stay: Renewal applications can be filed up to three months before expiration. Last-minute applications risk employment gaps and even unlawful overstay.

(2) Notifications upon job changes: For SSW holders, changes in the affiliated organization require a new application. Assuming that “it is the same industry, so it should be acceptable” is risky.

(3) Planning for family accompaniment: Family accompaniment is generally not permitted under SSW (i), but becomes possible upon transition to SSW (ii). Long-term career planning is therefore essential.

■ 6. Five Practical Challenges Facing Employers

(1) Coordination with registered support organizations: While support plans may be outsourced, ultimate legal responsibility remains with the accepting organization.

(2) Periodic and ad hoc notifications: Quarterly activity reports and other administrative obligations should not be overlooked, as omissions may directly affect future immigration reviews.

(3) Verification of work category alignment: Whether assigned duties fall within the scope of the granted work category must be confirmed each time a worker is deployed.

(4) Equivalent wages and working conditions: Treatment equivalent to or better than that provided to Japanese employees is a legal requirement, and consistency with internal wage regulations should be documented.

(5) Strategic support for SSW (ii) transition: Examination preparation, evidence of practical experience, and application timing together determine successful long-term retention.

■ 7. Why Vietnamese Nationals Account for Around 60%, and the Path to Diversification

While Vietnamese nationals currently account for the largest share of the construction-sector SSW population, diversification is progressing through Indonesia, the Philippines, and Myanmar, among others. Considering the economic development of sending countries, exchange rate trends, and global competition for talent, building a recruitment structure that is not dependent on a single country has become a strategic imperative.

■ 8. Benefits of Consulting an Administrative Scrivener (Gyoseishoshi)

Immigration-related procedures are a delicate area where a single documentation error can result in denial of an application or failure to renew. Engaging a specialist offers the following benefits:

  • Accurate documentation aligned with the latest operational standards of the Immigration Services Agency
  • Reduced processing time from application to approval
  • Strategic timing of renewals and status changes
  • Prompt response to unexpected issues
  • Reduced administrative burden on management and HR personnel

For construction companies operating across multiple project sites, status-of-residence management can quickly become complex. Engaging a specialist as an external HR and immigration compliance partner allows the company to focus on its core business.

■ 9. Advice for Companies Newly Hiring Foreign Workers

For companies hiring foreign nationals for the first time, the most important message is that recruitment is only the starting point. The full lifecycle includes:

  • Pre-employment: Acquisition of the appropriate status of residence
  • Post-employment: Implementation of the support plan and submission of periodic notifications
  • Years 1–2: On-site skills development and Japanese-language support
  • Years 3–5: Support for transition to SSW (ii) and long-term retention

Designing internal systems with the entire employment lifecycle in mind ultimately enhances the company’s competitiveness.

■ 10. Conclusion: The People Behind the Numbers

Behind the figure of 51,122 lies the individual story of each person who has crossed borders to work and live in Japan, together with their families and home communities. Our role as administrative scriveners goes beyond preparing documents—we serve as a bridge between foreign residents who wish to work in Japan and companies who wish to welcome them.

If you have any concerns regarding status-of-residence applications, transition to SSW (ii), or building internal systems for foreign employment, please feel free to contact us. Our initial consultation begins with a careful conversation about your current situation and possible paths forward.

▼ Reference Article
https://www.kensetsunews.com/sokuho/1223496

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