VisaSHOGUN FAQ — Can I Do a Side Job (副業) on My Work Visa in Japan?
Can I Do a Side Job (副業) on My Work Visa in Japan?
This guide is for foreign residents in Japan on a work-based status of residence (such as Engineer/Specialist in Humanities, Highly Skilled Professional, Business Manager, etc.) who are considering a side job, freelance gig, or part-time work in addition to their main employment.
In most cases, yes — but if the side activity falls outside the category of activity your visa permits, you need to obtain "Permission to Engage in an Activity Other Than That Permitted under the Status of Residence Previously Granted" (資格外活動許可) from ISA before starting. If the side job is clearly within the same category as your main job (e.g., another role doing the same type of professional work), separate immigration permission may not be needed — though your employment contract might still restrict it. Status-based categories (Permanent Resident, Spouse of Japanese National, Long-Term Resident, etc.) have no work restrictions and don't need this permission at all.
- Work-based visas are tied to a category of activity, not just "having a job"
- Side activities outside that category require 資格外活動許可 obtained before starting
- Status-based categories (PR, Spouse of Japanese National, Spouse of PR, Long-Term Resident) have no work restrictions — no permission needed
- Immigration permission and your employment contract's 副業 rules are two separate things — you may need both clearances
- Permission is generally straightforward to obtain but the process takes 2 weeks to 2 months
The Core Distinction: Category Match vs Category Mismatch
| Situation | 資格外活動許可 needed? | Notes |
|---|---|---|
| Engineer/Humanities visa holder takes on additional freelance work in the same field (e.g., another IT consulting client) | Generally not, if clearly within the same category | Still check your employment contract for 副業 restrictions |
| Engineer/Humanities visa holder wants to teach English on weekends | Yes | Teaching/instruction is a different activity category |
| Engineer/Humanities visa holder wants to start a small e-commerce side business | Yes (likely) | Running a business may fall outside permitted activities depending on scale and nature |
| Permanent Resident, Spouse of Japanese National, Long-Term Resident | No | No work activity restrictions under immigration law |
Immigration Permission vs Your Employment Contract — Two Different Things
資格外活動許可 is required under the Immigration Control Act for activities outside your status category, regardless of what your employment contract says. Obtaining this permission makes the activity legal from an immigration standpoint.
Even with immigration permission, many Japanese employment contracts include a 副業禁止 (side-job prohibition) clause, or require employer approval for outside work. Check your contract and, if in doubt, ask HR — immigration permission doesn't override a contractual restriction with your employer.
How Do You Get 資格外活動許可?
You apply at your regional immigration office (or simultaneously with a renewal/change of status application). There's no fee. Required documents typically include an application form, your residence card, and a document explaining the details of the activity (what the work is, roughly how many hours, who the client/employer is). Processing typically takes 2 weeks to 2 months.
Because processing can take up to 2 months, apply well before you intend to start the side activity — don't begin work while the application is pending.
📋 Common Scenarios
If this is clearly the same type of professional activity as your main job (Engineer/Specialist in Humanities), it likely doesn't require separate 資格外活動許可 — but confirm with a scrivener if the work is for a different industry or involves a different role type. Separately, check your employment contract for any side-job approval requirements.
This is a different activity category from most professional work visas, so apply for 資格外活動許可 before starting. The application is generally straightforward for limited, part-time tutoring.
Spouse of Japanese National (and similar status-based categories) have no work activity restrictions — you can engage in essentially any lawful work without 資格外活動許可. Normal business registration and tax rules still apply, of course.
🚫 Common Mistakes
Your company saying "副業 is fine" doesn't substitute for 資格外活動許可 if the activity is outside your visa category. These are separate clearances.
Working in an unpermitted category before approval is a violation, even if you've already submitted the application. Wait for the permission.
Friends or colleagues with PR or Spouse visas may casually take any side work — but those status-based categories have fundamentally different rules than work-based visas like Engineer/Humanities.
Related Questions
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