Introduction

Many foreign residents in Japan worry whether they can maintain or obtain the status of residence “Long-Term Resident” even if their current income comes only from part-time work.
In practice, the immigration authority does not simply reject applications just because the income is from part-time work; instead, it examines whether the applicant can maintain a stable life in Japan as a whole.

This article explains how part-time income is evaluated when changing to or renewing the status of residence “Long-Term Resident”, based on information from official sources such as the Immigration Services Agency of Japan and the Ministry of Justice.

What is “Long-Term Resident”?

Under the Immigration Control and Refugee Recognition Act, “Long-Term Resident” is defined as a status of residence granted to a foreign national who is allowed to reside in Japan for a certain period designated by the Minister of Justice, taking into account special circumstances.
Typical examples include Nikkei (persons of Japanese descent) and their family members, former spouses of Japanese nationals or Permanent Residents after divorce or bereavement, parents who raise a Japanese child, and recognized refugees.

Holders of “Long-Term Resident” are allowed to work in Japan without restrictions on the type of job, just like “Permanent Resident”, “Spouse or Child of Japanese National” and “Spouse or Child of Permanent Resident”.
However, their period of stay, such as 5 years, 3 years, 1 year, or 6 months, is individually designated, and at each renewal the immigration authority examines again whether the applicant can continue to live stably in Japan.

Is “Part-Time Only” Really a Problem?

On the internet you may find opinions like “You cannot keep Long-Term Resident with only part-time jobs” or “You must be a full-time employee”.
Yet, official guidelines and Q&A show no rule that automatically denies applications only because the income is part-time; the key point is rather whether the applicant can lead a stable life in Japan.

Explanations about Long-Term Resident stress the importance of total household income and the ability to maintain life in Japan, instead of the mere form of employment.
Therefore, even when your income is only from part-time work, if you can prove, with documents, that your household can maintain a stable life through factors such as income level, continuity, savings, and support from family members, it is still possible to be granted the status.

Main Criteria for “Stability” in Examination

When examining applications for change or extension of the Long-Term Resident status, the Immigration Services Agency places strong emphasis on whether the applicant can maintain a stable life in Japan.
Major criteria include the following.

• Amount and continuity of income
  The authority checks how much income the applicant actually earns and how stable it is, based on payslips, certificates of employment, and employment contracts.
  Even in the case of part-time work, if the applicant works continuously at the same workplace, it may be evaluated as more stable than frequently changing short-term jobs.
• Total household income and support
  If a spouse works as a full-time employee with a stable income, or if the applicant receives regular financial support from relatives or has sufficient savings, these factors can strengthen the evaluation of the household’s financial base.
• Tax payment and social insurance records
  Certificates of taxation and payment of resident tax are required for extension of period of stay, and appropriate tax payment and enrollment in social insurance are important factors.
  Good records in this area are favorable, regardless of whether the job is full-time or part-time.
• Stability of residence and living environment
  Long-term residence at the same address, reasonable rent compared to the household income, and stable family life are also considered as elements of a stable living base.

In short, the immigration authority looks at the overall stability of the applicant’s life, rather than making decisions solely on whether the applicant is a full-time employee or a part-time worker.

When Part-Time Income Is Viewed Favorably or Unfavorably

Below are typical patterns to help you understand how part-time income may be evaluated. These are general images and do not refer to any specific case.

Cases likely to be evaluated favorably

• Long-term continuous work at the same workplace
  Example: The applicant has been working at the same restaurant for more than three years, around 30 hours per week, and is covered by social insurance.
• Sufficient income at the household level
  Example: The applicant earns 120,000–150,000 yen per month from part-time work, while the spouse earns more than 250,000 yen per month as a full-time employee, making the household income stable as a whole.
• Proper tax payment and social insurance participation
  Paying taxes and insurance premiums correctly and filing tax returns properly is highly valued, regardless of the form of employment.

Cases likely to be evaluated unfavorably

• Frequently changing short-term or daily part-time jobs
  If workplaces and working hours change frequently and the monthly income fluctuates widely, continuity and stability may be questioned.
• Insufficient household income with little savings or support
  If the income is clearly too low compared to rent and living expenses, and there is no savings or support to supplement it, it becomes difficult to demonstrate stability.
• Delays or problems in tax or insurance payments
  As tax and payment certificates are required for renewal, arrears may negatively affect the examination.

Documents and Tips When Applying with Part-Time Income

When your main income is from part-time work, preparing the following documents can help you explain your stable living situation.

• Employment contract or written statement of working conditions
  These documents show working hours, hourly wage, and employment period, which are important to explain expected income.
• Payslips and certificates of income
  Payslips for recent months and certificates such as withholding tax slips show the actual income and its continuity.
• Certificates of taxation and tax payment
  These certificates are listed as required documents for the extension of period of stay.
  If such certificates are not available because you recently came to Japan, you are advised to submit a written explanation together with payslips and other documents.
• Income documents of spouse or household head
  Showing the income of your spouse or household head helps to explain the stability of the entire household.
• Simple household budget
  Preparing a simple list of your rent, utilities, and other living costs, together with your household income, makes it easier to show that your life is financially sustainable.

The essential point is to demonstrate, with objective documents, that you can maintain a stable life in Japan, regardless of whether your income comes from full-time or part-time work.

When You Should Consider Consulting a Professional

You should consider consulting a professional or contacting the immigration office in the following situations:

• Your workplace or form of employment has changed significantly
• Your monthly income fluctuates greatly
• You have had problems related to tax or social insurance in the past
• Your family status has changed due to divorce, bereavement, or changes in custody

The Immigration Services Agency operates the “Information Center for Foreign Residents” and also provides various Q&A documents on its official website.
Checking the latest information on the official websites of the Ministry of Justice and the Immigration Services Agency is very important before preparing your application.

Summary

• “Long-Term Resident” is a status of residence granted considering individual and humanitarian circumstances, and it allows work without restrictions on the type of job.
• Applications are not automatically rejected just because your income is from part-time work; the key point is whether you can maintain a stable life in Japan, viewed through income amount and continuity, household income, tax and insurance status, and living environment.
• Long-term and continuous part-time work, sufficient household income, and good records of tax and social insurance payments are positive factors even for part-time workers.
• When changing or renewing your status, it is important to collect documents such as employment contracts, payslips, certificates of income, and tax certificates, and to explain your stable life in a concrete and organized way.
• In complex situations, consulting the immigration office or a qualified professional, based on up-to-date official information, will help you choose the safest course of action.