This article is written by a Japanese local.
The “Dependent” (Kazoku Taizai) visa is granted to spouses and children who live under the financial support of a foreign national (the primary visa holder) staying in Japan on a work visa. If you obtain “Permission to Engage in Activity Other Than That Permitted Under the Status of Residence,” you are allowed to work part-time. However, this comes with an absolute legal limit: you must work “up to 28 hours per week.”
This article explains the detection mechanisms used by the Immigration Bureau when a spouse exceeds this limit (overwork). Furthermore, we objectively unravel the reality of the “joint responsibility risk”—which not only results in the denial of the spouse’s visa renewal but can also destroy the primary visa holder’s legal status and future Permanent Residency applications—and outline logical recovery approaches in times of crisis.
1. Why is Overwork “Certainly” Detected by Immigration?
The assumptions that “they won’t find out because I work at multiple places” or “there’s no record because I get paid in cash” are completely shattered in modern administrative systems. The Immigration Bureau systematically and accurately uncovers overwork using the following logic.
Proof via “Hourly Wage Reverse Calculation” from Tax Certificates
When applying for a visa renewal, submitting a “Taxation Certificate” (Kazei Shomeisho) issued by the municipality is mandatory. Examiners closely scrutinize the annual salary income listed there. For example, suppose the minimum wage in your area is 1,000 JPY, and the spouse’s annual income is 1,600,000 JPY.
Dividing this by 1,000 JPY equals 1,600 hours of labor per year. Divided by 52 weeks, this averages to about 30.7 hours per week. Using only the numbers from submitted official documents, Immigration can prove the fact that “this is an income impossible to earn without physically exceeding 28 hours a week.”
Data Integration and the “Cash Handover” Trap
Even if you work at multiple part-time jobs, each company submits a salary payment report to the municipality, meaning your individual income is aggregated at a single local government office through administrative systems like MyNumber. Furthermore, even if you are paid in “cash,” the company still declares it as a labor expense for tax purposes, linking the income data back to you. Due to the integration of tax and legal systems, concealment is impossible.
2. A Fatal Misunderstanding: There is No “Long Vacation Exception”
One of the biggest reasons people fall into the overwork trap is a misunderstanding of Immigration rules.
For “Student” visas, there is an exception allowing them to work “up to 8 hours a day (40 hours a week)” strictly during long school holidays like summer vacation. However, this exception does not apply to “Dependent” visas under any circumstances.
Whether it is the New Year holidays, summer break, or a period when the primary visa holder’s income temporarily drops, you must strictly observe the “28 hours a week” limit 365 days a year. Furthermore, these 28 hours are not measured from “Sunday to Saturday.” The strict standard dictates that your hours must be under 28 hours during any arbitrary 7-day period.
3. The “Joint Responsibility Risk” Dragging Down the Primary Visa Holder
The true terror of overworking on a Dependent visa is not just that the spouse’s visa renewal will be “denied” (or in the worst case, lead to deportation procedures). It is the collateral damage inflicted upon the “primary visa holder” working in Japan.
Supervisory Responsibility and Negative Impact on Permanent Residency (PR)
Under the Immigration Control Act, the primary visa holder has a “responsibility to supervise” their family so they can live lawfully in Japan. If a spouse’s illegal labor (overwork) is discovered, the following joint responsibilities arise:
- Impact on the Primary Holder’s Work Visa Renewal: During their own visa renewal, they may be judged as having a “poor residency status” or “lacking compliance with laws.” This risks having their period of stay shortened (e.g., downgraded from 3 years to 1 year) or, in the worst case, having the renewal denied entirely.
- De Facto Freezing of PR Applications: This fatally violates the “good conduct requirement” and “compliance requirement” in the Permanent Resident guidelines. If even one family member has violated the Immigration Control Act (overwork), the primary holder’s PR application will also be jointly denied. Applications become practically impossible until the violation is resolved and several years of clean history are rebuilt.
4. Recovery from Denial: Re-proving the “Life Foundation”
If you have unintentionally overworked, attempting to hide the facts during a renewal application is a fatal flaw. If it hasn’t been discovered yet, voluntary disclosure is necessary. If a renewal has already been denied, a recovery (re-application) approach based on the following logic is essential.
Step 1: Establishing Facts and Submitting a “Statement of Facts”
To overturn an administrative decision, you need an objective organization of facts, not an emotional apology.
- A detailed background on why the excess hours occurred (e.g., shift management errors, misunderstanding of rules).
- Proof of “corrective action,” showing that the spouse has already resigned or agreed with the employer to reduce hours to a lawful limit (attaching a certificate of resignation or a new employment contract).
- Drafting a Statement of Facts (Tenmatsusho / Riyusho) documenting measures to prevent recurrence.
Step 2: Re-proving a “Life Foundation Solely on the Primary Holder’s Income”
The foundation of the Dependent visa is “living under financial support.” When overwork is discovered, Immigration will suspect, “Is their financial situation so bad that they cannot make a living unless the spouse works illegally?”
To dispel this, you must re-prove using financial documents (copies of bank passbooks, household account books, the primary holder’s salary slips) that “even if the spouse’s part-time income is zero, the household can comfortably survive solely on the primary visa holder’s income.”
5. Practical Q&A on Dependent Visa Overwork
- Q: Is it okay if I adjust it monthly so that it fits within 112 hours (28 hours x 4) over 4 weeks?
A: That is illegal. The rule is “within 28 hours in any arbitrary 7-day period.” For example, working 40 hours in the first week and cutting back to 16 hours in the second week to average it out is not allowed. No matter which 7-day window you isolate, it must not exceed 28 hours. - Q: I work as an independent contractor for services like Uber Eats. How are working hours calculated?
A: The 28-hour limit still applies even for independent contractors or freelance activities. Because calculating working hours (which may include time spent waiting online on the app) is difficult, it is very easy to be suspected of overworking. In practice, this is an extremely high-risk way of working. - Q: I received a notice that my renewal was denied. Can I still recover?
A: It depends on the situation, but if you have just been changed to a “Designated Activities (Preparation for Departure – 30 or 31 days)” visa, there is still room to apply for a re-change back to “Dependent” by promptly resolving the violation and preparing a meticulous Statement of Facts and supporting evidence. The speed of your initial response and the logic of your documents determine everything.