When you decide to change jobs as an SSW (Specified Skilled Worker / Tokutei Ginou / 特定技能) visa holder in Japan, one of the first and most important questions is: should I stay in the same field, or switch to a completely different one?
The answer matters more than you might think. Staying within your current designated field (分野) means a significantly simpler visa process — no additional skills test, fewer documents, and a shorter overall timeline. Switching to a different field, on the other hand, requires passing a new skills evaluation test, additional documentation, and careful planning to avoid gaps in employment.
This article breaks down the exact differences between these two paths: what is required for each, how the visa procedures compare, which SSW fields exist, and practical guidance to help you make the right decision.
If you are new to the topic of SSW job changes, our complete guide to SSW job changes covers the fundamentals.
Changing Jobs Within the Same Field
A "same field" (同一分野) transfer means you are moving from one company to another within the same designated SSW industry — and typically within the same business category (業務区分). For example, moving from one food manufacturing company to another food manufacturing company, or from one nursing care facility to a different nursing care facility.
Why This Path Is Simpler
When you stay within the same field, you have already proven your skills through your original skills evaluation test (技能評価試験) or by successfully completing Technical Intern Training (技能実習) in a related area. The Immigration Services Agency does not require you to take the skills test again. This eliminates one of the biggest hurdles of a job change.
Key point: Staying in the same field means no additional skills test. Your original test result (or Technical Intern Training completion) remains valid as proof of your qualifications.
What You Still Need to Do
Even though the skills test is not required again, changing employers always requires a formal visa procedure. You must submit a Change of Status of Residence application (在留資格変更許可申請) to the Immigration Bureau. This is because your SSW visa is tied to a specific accepting organization (受入れ機関), and when the employer changes, the visa conditions must be updated.
The main steps for a same-field transfer:
Secure a new job offer
Find a new employer in the same designated field. The new company must be registered as an SSW accepting organization and meet all compliance requirements.
Prepare the required documents
You will need your employment contract with the new company, a support plan (1号特定技能外国人支援計画), identification documents, tax and social insurance records, and more. See our document guide for a complete list.
Submit the Change of Status of Residence application
File the application at your regional Immigration Bureau. The application is reviewed to confirm that the new employer and employment conditions meet the legal requirements for SSW status.
Wait for approval
Processing typically takes 1 to 3 months, depending on the time of year and the volume of applications. You cannot start working at the new company until approval is granted.
Begin work at the new company
Once your application is approved and your residence card is updated, you can officially start working at your new employer.
Switching to a Different Field
A "different field" (異なる分野) transfer means you are moving from one SSW designated industry to an entirely different one. For example, moving from food service (外食業) to automobile repair (自動車整備), or from agriculture (農業) to building cleaning (ビルクリーニング).
The Critical Difference: A New Skills Test
When you switch to a different field, you must pass the skills evaluation test for the new field (当該分野の技能評価試験). Each of the 16 SSW designated fields has its own test, administered by the industry-specific examining body. The test evaluates whether you have the practical knowledge and skills required for that industry.
Important: You cannot apply for a field change until you have passed the new field's skills evaluation test. Plan ahead — some tests are only offered a few times per year, and test schedules vary by field and location.
Japanese Language Test: Usually Not Required Again
If you have already passed a Japanese language proficiency test (such as the JLPT N4 or JFT-Basic A2 level) for your current SSW status, you generally do not need to take it again when switching fields. The language requirement is considered already met. However, certain fields such as nursing care (介護) require an additional field-specific Japanese test (介護日本語評価試験) due to the nature of the work.
Steps for a Different-Field Transfer
Choose your target field
Research the SSW field you want to switch to. Consider the work content, salary levels, available jobs in your area, and whether the field offers a path to SSW Category 2 (特定技能2号) for long-term residence.
Pass the skills evaluation test for the new field
Register for and pass the designated skills test. Each field has its own testing body and schedule. Some tests are available overseas; others can be taken within Japan. Check the relevant industry association's website for test dates and study materials.
Secure a job offer in the new field
Find an employer in the new designated field. The company must be registered as an SSW accepting organization for that specific field.
Prepare documents (expanded set)
In addition to the standard documents for a job change, you will need your new skills test result certificate. The document requirements are the same as for an initial SSW application, since this is effectively a change of designated field.
Submit the Change of Status of Residence application
File the application at Immigration, specifying the new designated field and providing all supporting documents.
Wait for approval and begin work
Processing time is typically 1 to 3 months. As with same-field transfers, you cannot work at the new company until the application is approved.
Planning tip: The smartest approach is to take and pass the skills test for your target field while you are still employed at your current job. This way, you avoid any gap in employment or income.
Side-by-Side Comparison: Same Field vs Different Field
The following table summarizes the key differences between the two paths. Understanding these differences will help you plan your transition and set realistic expectations.
| Item | Same Field Transfer | Different Field Transfer |
|---|---|---|
| Skills evaluation test | Not required (already passed) | Required (must pass new field's test) |
| Japanese language test | Not required again | Generally not required again* |
| Visa application type | Change of Status of Residence (在留資格変更許可申請) | Change of Status of Residence (在留資格変更許可申請) |
| Typical processing time | 1–3 months | 1–3 months |
| Total preparation time | 2–4 months (job search + application) | 3–8 months (test prep + job search + application) |
| Document requirements | Standard job change documents | Standard documents + new skills test certificate |
| Risk level | Lower — your qualifications are already proven | Higher — test failure delays the entire process |
| Best for | Workers who want a better employer but are satisfied with their industry | Workers who want to change their career direction entirely |
*Nursing care (介護) requires an additional field-specific Japanese language test (介護日本語評価試験), even if you have already passed the standard Japanese test.
The 16 SSW Designated Fields
As of March 2026, the SSW program covers 16 designated industrial fields. Understanding which field you are currently in — and which fields you could potentially switch to — is essential for planning a job change.
The original 12 fields were established when the SSW system launched in April 2019. Four additional fields (automobile transportation, railway, forestry, and wood industry) were added in 2024–2025, bringing the total to 16.
| # | Field (English) | Field (Japanese) | SSW Cat. 2 available? |
|---|---|---|---|
| 1 | Nursing care | 介護 | No |
| 2 | Building cleaning management | ビルクリーニング | Yes |
| 3 | Material processing / Industrial products manufacturing | 素形材・産業機械・電気電子情報関連製造業 | Yes |
| 4 | Construction | 建設 | Yes |
| 5 | Shipbuilding / Marine industry | 造船・舶用工業 | Yes |
| 6 | Automobile repair & maintenance | 自動車整備 | Yes |
| 7 | Aviation | 航空 | Yes |
| 8 | Accommodation / Hotel | 宿泊 | Yes |
| 9 | Agriculture | 農業 | Yes |
| 10 | Fishery & Aquaculture | 漁業 | Yes |
| 11 | Food & beverage manufacturing | 飲食料品製造業 | Yes |
| 12 | Food service | 外食業 | Yes |
| 13 | Automobile transportation | 自動車運送業 | No |
| 14 | Railway | 鉄道 | No |
| 15 | Forestry | 林業 | No |
| 16 | Wood industry | 木材産業 | No |
About SSW Category 2 (特定技能2号): As of March 2026, 11 of the 16 fields offer a pathway to SSW Category 2, which grants unlimited renewals (no 5-year cap) and allows you to bring your family to Japan. If long-term residence is your goal, consider whether your target field has a Category 2 pathway. For more details, see our SSW job change guide.
Note on the construction field (建設): The construction industry has additional regulations. Job placement through private recruitment agencies is restricted in this field under Japanese law. If you are working in or looking to enter construction, consult directly with an immigration specialist (行政書士) for guidance on proper procedures.
Not Sure Which Field Is Right for You?
TreeGlobalPartners provides free job placement support for SSW workers across all fields where private recruitment is permitted. We help you understand your options, find the right employer, and navigate the transition. Visa application procedures are handled by our group company, Gyoseishoshi Corporation Tree (行政書士法人Tree).
Get Free Consultation →Practical Examples: Same Field vs Different Field
To make the differences concrete, here are typical scenarios showing how the process differs depending on your situation.
Scenario A: Same Field Transfer (Food Manufacturing → Food Manufacturing)
AWorker profile: SSW Category 1 in food & beverage manufacturing (飲食料品製造業). Wants to move to a different food manufacturing company with better pay.
Skills test: Not required again. The worker's existing qualification covers the same designated field.
Process: Find new employer → prepare documents → submit Change of Status of Residence → receive approval → start new job.
Estimated timeline: 2–4 months total (1–2 months to find a job and prepare documents, 1–3 months for Immigration processing).
Scenario B: Different Field Transfer (Food Service → Nursing Care)
BWorker profile: SSW Category 1 in food service (外食業). Wants to switch to nursing care (介護) for better long-term career prospects.
Skills test: Must pass the nursing care skills evaluation test (介護技能評価試験) AND the nursing care Japanese language test (介護日本語評価試験).
Process: Study for and pass both tests → find new employer in nursing care → prepare documents (including test certificates) → submit Change of Status of Residence → receive approval → start new job.
Estimated timeline: 4–8 months total (1–3 months for test preparation, 1–2 months for job search and documents, 1–3 months for Immigration processing).
Scenario C: Same Field, Different Business Category
CWorker profile: SSW Category 1 in construction (建設), currently in "formwork construction" (型枠施工). Wants to switch to "concrete pressing" (コンクリート圧送) within the same construction field.
Skills test: This depends on the specific business categories. If the categories are considered different within the same field, a new skills test for the target category may be required. Check with the relevant industry body (in this case, the Japan Association for Construction Human Resources / 建設技能人材機構, or JAC).
Process: Confirm test requirements → pass additional test if needed → find employer → submit application → receive approval.
Estimated timeline: 2–6 months depending on whether an additional test is required.
The bottom line: The simplest, fastest path is always a same-field, same-category transfer. The further you move from your current field, the more preparation time and additional requirements you will face. That does not mean a different-field transfer is impossible — it simply requires more planning.
Important Warnings
Regardless of whether you stay in the same field or switch, there are critical rules and risks you must be aware of.
The 3-month rule: If you are unemployed for more than 3 consecutive months without a justifiable reason, the Immigration Bureau may revoke your SSW status of residence. This makes it essential to plan your job change carefully and avoid unnecessary gaps. For a detailed explanation, see our article on visa status during a job change.
Do not start working before approval: You cannot begin working at your new employer until your Change of Status of Residence application is approved. Working before approval is a violation of your visa conditions and can result in serious consequences, including deportation.
The 5-year total limit for SSW Category 1: The maximum period of stay under SSW Category 1 is 5 years in total, regardless of how many times you change employers or fields. Time already spent under SSW Category 1 status counts toward this cap. If you have been on SSW Category 1 for 3 years and are considering a field change, keep in mind that you only have 2 years remaining — and some of that time will be consumed by the transition process itself.
Test schedules vary by field: Not all skills evaluation tests are offered frequently. Some fields offer tests quarterly; others may only hold them once or twice a year. Before deciding to switch fields, check whether a test is available soon enough to fit your timeline. Waiting 6 months for a test date while your 5-year clock is ticking is a significant cost.
Notification requirements: When you change employers, both you and your previous employer must submit notifications to the Immigration Bureau within 14 days. Your new employer must also submit an acceptance notification. Failure to comply with these reporting requirements can cause problems for future visa applications. For a full list of required notifications, see our SSW job change documents guide.
Frequently Asked Questions
Summary
- Same-field transfers are simpler — no additional skills test required, fewer documents, and a shorter overall timeline (typically 2–4 months)
- Different-field transfers require a new skills test — you must pass the target field's evaluation test before applying, adding months to the process (typically 3–8 months total)
- Both paths require a Change of Status of Residence application — Immigration processing takes 1–3 months regardless of which path you choose
- The Japanese language test is generally not required again — except for nursing care, which has an additional field-specific language test
- Plan carefully around the 5-year limit — SSW Category 1 has a cumulative 5-year cap; time spent on transitions counts toward this limit
- Consider SSW Category 2 availability — 11 of the 16 fields currently offer a path to Category 2 for long-term residence in Japan
- TreeGlobalPartners provides free job placement — we help you find the right employer, whether you stay in your field or switch to a new one
- Visa application procedures are handled by our group company, Gyoseishoshi Corporation Tree (行政書士法人Tree)
Choosing between a same-field and a different-field transfer comes down to your personal goals. If your main concern is working conditions or salary, a same-field transfer is often the fastest solution. If you genuinely want to build a career in a different industry, a field switch is worth the extra effort — just plan ahead, pass the test first, and do not resign until you have a clear path forward.
If you are unsure which direction is right for you, reach out to TreeGlobalPartners. We can help you weigh your options, find suitable employers across multiple fields, and coordinate the entire process from start to finish — at no cost to you.
Ready to Make Your Next Move?
Whether you are staying in your field or exploring a new one, TreeGlobalPartners connects SSW workers with verified, trustworthy employers across Japan. Job placement is completely free for workers. Visa procedures are handled by Gyoseishoshi Corporation Tree (行政書士法人Tree). One team, full support — from job search to visa approval.
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Disclaimer: The information in this article is based on the immigration laws and regulations of Japan as of March 2026 and is intended for general informational purposes only. Laws, regulations, and processing times are subject to change. For the most up-to-date information, please consult the Immigration Services Agency of Japan (出入国在留管理庁) or a qualified professional (行政書士 / attorney).
TreeGlobalPartners accepts no liability for actions taken based on the contents of this article. Individual situations may vary — please seek professional advice for your specific case.