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Japan’s Immigration Services Agency (ISA) is tightening how it screens the “Engineer/Specialist in Humanities/International Services” visa (ESI, 技術・人文知識・国際業務) because post-pandemic hiring growth brought a wave of cases where the status — legally reserved for university-level specialist work — was quietly covering simple or manual labor instead. ISA has shifted from checking that the right forms were filed to checking whether the work and the paperwork are actually true.
| Effective | Change | In one line |
|---|---|---|
| Jan 2026 | Job-duty review | ISA publishes a clearer line between ESI and Specified Skilled Worker (SSW) |
| Mar 2026 | Dispatch (haken) documentation | Far more paperwork required for dispatched staff; no confirmed host employer, no approval |
| Apr 15, 2026 | Language proficiency | Category 3/4 employers must prove language ability for interpersonal roles |
Each is covered below.
1. Where the line falls between ESI and Specified Skilled Worker
In January 2026, ISA drew a clearer boundary between ESI and Specified Skilled Worker (SSW), using manufacturing as the example:
| Status | Typical duties |
|---|---|
| ESI (specialist) | Design, programming, technology development |
| SSW Type 1 (specified skill) | General production-line work, done under supervision |
| SSW Type 2 (skilled/supervisory) | Process management, floor/worker supervision (team-leader level) |
Type 1 and Type 2 aren’t just a duty split — they carry different visa terms. Type 1 tops out at 5 years total and doesn’t allow dependents; Type 2 can be renewed indefinitely and does allow dependents, but it’s only open in a subset of industry fields.
Straight from ISA’s own comparison chart
ISA publishes its own side-by-side chart of ESI versus both SSW types, current as of January 2026. It confirms the same pattern across five industries:
Type of work
- SSW Type 1: work requiring skills calling for considerable knowledge or experience, in a specified industry field
- SSW Type 2: work requiring skilled, expert-level technical ability, in a specified industry field
- ESI: work requiring technology or knowledge from the natural sciences or humanities, or a way of thinking/sensitivity grounded in a foreign culture (“international services”)
Approval criteria
- SSW Type 1: pass the SSW Type 1 skill test; JLPT N4+ (N3+ in some fields)
- SSW Type 2: pass the SSW Type 2 skill test; JLPT N3+ required (fisheries and food-service fields only)
- ESI: university graduate level, or 10+ years of practical experience (3+ years for international-services duties)
Typical duties by industry:
Hospitality (hotels/inns)
- SSW Type 1: front desk, planning/PR, guest service, restaurant service
- SSW Type 2: same duties, supervising multiple employees
- ESI: front desk, planning/PR
Food service
- SSW Type 1: food/drink prep, customer service, store management
- SSW Type 2: same, plus store operation
- ESI: managing multiple stores, store operation, planning
Manufacturing
- SSW Type 1: manufacturing/assembly line work
- SSW Type 2: same, plus process management, supervising multiple workers
- ESI: design, programming, technology development
Auto maintenance
- SSW Type 1: basic routine inspection/maintenance
- SSW Type 2: same, plus instructing other staff
- ESI: supervising mechanics; chief maintenance manager
Construction
- SSW Type 1: civil/construction work under a supervisor
- SSW Type 2: same, plus process management, supervising multiple workers
- ESI: architectural design, design supervision, cost estimation
The manufacturing row is the one used earlier in this guide — ISA’s own chart just confirms it holds across hospitality, food service, auto maintenance, and construction too. Source: ISA comparison chart (PDF)
A role like semiconductor equipment operation can still qualify for ESI — but only if the employer documents why it genuinely requires advanced specialized knowledge. A job title alone no longer carries that weight.
2. The new language proficiency requirement
For applications filed from April 15, 2026, some employees now need to prove language ability before the visa is granted:
| Employer category? | → | Cat. 1 or 2: No proof required |
| Cat. 3 or 4: Is the role mainly interpersonal, language-based work? | → | No (engineer, designer, etc.) | → | No proof required |
| Cat. 3 or 4: Yes (interpreter, front desk, etc.) | → | Proof of language ability required |
Category 3 covers employers whose prior-year withholding tax filing was submitted (below the Category 2 threshold); Category 4 covers everyone else, including new companies. Category 1 and 2 employers (listed companies, or ¥10 million+ in prior-year withholding tax) are exempt regardless of the role.
Any ONE of the following satisfies the requirement:
| Proof | Detail |
|---|---|
| JLPT | N2 or higher |
| BJT | Business Japanese Proficiency Test, 400+ points |
| Education in Japan | University or vocational school (specialized/advanced course) graduate |
| Education in Japan | Compulsory education + high school completed in Japan |
| Residence history | 20+ years as a mid- to long-term resident |
At renewal, applicants continuing the same duties as before generally don’t need to resubmit this proof.
3. Dispatched (haken) workers: much more paperwork
From March 2026, every dispatch (haken) case — regardless of employer category — needs a longer document set, and it grows again at renewal:
| Document | At status decision | At renewal |
|---|---|---|
| Undertaking, dispatching company | Required | Required |
| Undertaking, host company | Required | Required |
| Labor conditions notice | Required | Required |
| Individual dispatch agreement | Required | Required |
| Dispatching company’s management ledger | — | Required |
| Host company’s management ledger | — | Required |
| Work-status report | — | Required |
The single biggest practical shift: if the host company (haken-saki) isn’t confirmed yet at filing, the application will not be approved. Previously, a signed contract with the dispatching agency alone was often enough.
Three things worth getting right before filing:
- Consistent wording. Job-duty descriptions must match, in substance, across the labor conditions notice and the management ledgers.
- Context for short contracts. A 3-month dispatch agreement should come with a note showing the renewal history, so the reviewer isn’t left guessing about stability.
- Don’t skip the undertakings. Omitting either signed undertaking is treated as a real red flag, not a neutral choice.
4. Misconduct elsewhere can now block an ESI approval
| Company disqualified under SSW or Technical Intern Training (e.g. human rights violation) | → | ISA suspension period (up to 5 years) | → | No new ESI sponsorship during suspension — applies to host companies in dispatch arrangements too |
ISA has made this explicit: a company barred from sponsoring Specified Skilled Worker or Technical Intern Training visas for misconduct — most seriously, human rights violations against foreign workers — cannot newly sponsor ESI applicants either, for as long as that suspension runs. Critically, this reaches host companies in a dispatch arrangement, not only the direct employer.
Who this actually affects
| Group | What changed for them |
|---|---|
| Companies using dispatched ESI staff | Full document set, host company must be confirmed before filing |
| Category 3/4 employers with language-facing roles | Must prove language proficiency for interpreter, front-desk, and similar roles |
| Staffing (haken) agencies | Same documentation burden, plus exposure if a host company has disqualifying misconduct |
| Existing ESI holders | Requirements apply again at the next renewal, not only to new applicants |
What to do now
- Re-check job descriptions against the ESI/SSW boundary, especially in manufacturing — document why a role needs specialized knowledge, don’t just assert it
- For Category 3/4 employers, confirm language-proficiency evidence is on file for interpreter, front-desk, or similar staff before the next renewal
- For dispatch cases, don’t file until the host company is confirmed
- Audit that job-duty wording matches across the labor conditions notice, dispatch agreement, and both management ledgers
- Treat every undertaking/oath letter as effectively mandatory
- Check whether a host or dispatching partner has a live disqualification under SSW or Technical Intern Training before relying on that relationship for a new filing
Sources
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