Reading a Japanese Employment Contract
Reading a Japanese employment contract carefully, before signing, means checking it against two other documents your employer is legally required to provide: the labor conditions notice and, at larger workplaces, the work rules.1 A contract that looks complete on its own can still hide a transfer clause, a fixed-overtime figure, or a duties assignment broad enough to put your status of residence at risk once you are already on the job.
Procedures, fees, and requirements can change. Confirm current details at the Ministry of Health, Labour and Welfare (MHLW). This article is general information, not legal, tax, or immigration advice; for your specific case, consult a licensed bengoshi (弁護士, lawyer) or shakai hoken roumushi (社会保険労務士, labor and social insurance attorney) for clause-specific concerns such as non-compete enforceability, contested dismissal grounds, or ambiguous IP-assignment scope, or an immigration lawyer or gyōseishoshi (行政書士) where your work-location or duties clause risks a mismatch with your status of residence.
Overview
This article is for anyone with a written Japanese job offer in hand, evaluating it before signing.1 It applies to Japanese nationals and to residents on any work-permitting status of residence alike, since the underlying labor statutes make no distinction by nationality.12
This article does not re-derive which employment category, seishain, keiyaku shain, haken, or arubaito, describes your position. Seishain, Keiyaku, Haken, and Arubaito: Japan's Employment Categories already covers that ground. This article assumes you already know which category your offer falls into and focuses on reading the document itself.
The statutes and case-law standards below are national law. There is no ward, city, or prefectural variance in what a contract, a labor conditions notice, or a set of work rules must contain.12 Variance you will encounter is company-to-company, in what your specific employer's own work rules say, not jurisdictional.
The Three Documents That Govern Your Job
Before reading any single document in isolation, it helps to know how the three fit together. A statutory floor set by national law sits underneath everything; your individual contract and the workplace-wide work rules both build on top of it.
雇用契約書 (Koyō Keiyakusho): The Contract Itself
Japanese law does not require a separate document titled 雇用契約書 (koyō keiyakusho, "employment contract"). The Civil Code and the Labor Standards Act govern the employment relationship regardless of what the paperwork is called.1
In practice, employers very commonly merge the individually negotiated contract with the statutory labor conditions notice covered next, often into a single document titled 労働条件通知書兼雇用契約書 ("labor conditions notice cum employment contract"). This merging is common market practice, not a legal requirement.34
労働条件通知書 (Rōdō Jōken Tsūchisho): The Statutory Notice
Labor Standards Act Article 15(1) requires an employer, when concluding a labor contract, to clearly indicate wages, working hours, and other working conditions set out in an MHLW ordinance.1 Article 15(2) gives you a direct remedy if a disclosed condition turns out to be false: you may immediately terminate the contract.1
The Ordinance for Enforcement of the Labor Standards Act, Article 5, itemizes what has to be disclosed (as of 2024; confirm current figures with the Ministry of Health, Labour and Welfare).56 The list sits in this subordinate ordinance rather than in the Act itself, and it has been revised twice in recent years.
| Category | Must the employer disclose it? | Examples |
|---|---|---|
| Absolute (mandatory in every case) | Yes, always | Contract term; workplace and duties; working hours, overtime, breaks, days off, leave, shift-change rules; wage determination, calculation, payment method, pay-closing and payment dates, pay raises; termination matters including dismissal grounds |
| Relative (conditional) | Only if the employer has made such provisions (as of 2024)5 | Retirement allowance; bonuses and other temporary wages, minimum wage; worker cost-sharing; safety and health; vocational training; accident compensation; commendations and discipline; leave of absence |
Effective April 2024, four items were added to this disclosure duty (as of 2024-04).34
| Added item (since April 2024) | What it requires |
|---|---|
| Scope of possible future change to workplace and duties | Not just the conditions at hiring, but the range the employer could later change them to |
| Fixed-term renewal cap | Whether a fixed-term contract has a cap on the number of renewals, and what it is |
| Indefinite-term conversion opportunity | For fixed-term workers, notice when the opportunity to apply for indefinite-term conversion arises |
| Post-conversion conditions | The labor conditions that would apply after such a conversion |
The default disclosure method is a written document. Since April 2019, an employer may instead use fax, email, or an SNS or electronic message service if the worker requests that method, provided the worker can output the record as a printed document (as of 2019-04).57 An employer may not unilaterally substitute electronic delivery against the worker's wishes.57
MHLW encourages employers to communicate working conditions in a language the worker understands, and publishes model multilingual labor-conditions notices in English, Chinese, Korean, Portuguese, Spanish, Tagalog, Indonesian, and Vietnamese.8 This is administrative guidance and a compliance aid, not a codified statutory right to a translated document. Treat it as something to ask for, not something you can legally compel.
就業規則 (Shūgyō Kisoku): The Work Rules
Labor Standards Act Article 89 requires an employer with 10 or more workers to draw up rules of employment and file them with the labor standards inspection office.1 The count is per workplace (事業場, jigyōjō), not per company.
The "10 or more" figure and its per-workplace scope come directly from the statute. The detailed inclusion and exclusion rules for edge-case worker categories, such as counting part-time and arubaito workers at that workplace, excluding dispatched workers who are counted at their dispatching agency instead, and excluding company officers and business-delegation contractors, reflect professional labor and HR commentary rather than the bare text of Article 89 itself.16
| Category | Examples |
|---|---|
| Mandatory | Working hours matters (start and end times, breaks, days off, leave, shift-change rules where workers are divided into two or more groups); wage determination, calculation, payment method, pay-closing and payment timing, pay-raise provisions; matters concerning retirement, including dismissal grounds |
| Conditional (only if the employer has such a provision) | Retirement-allowance rules; temporary-wage and minimum-wage rules; other listed categories |
Article 90 requires the employer to hear the opinion of the majority labor union at the workplace, or a representative of the majority of workers where no such union exists, before filing rules of employment or an amendment.1
Article 106 requires the employer to make the rules of employment known to workers, for example by posting them, distributing a copy, or keeping them on an accessible computer system.1 The statute frames this as the employer's proactive disclosure duty, not literally an individual worker's "right to request a copy," though it functions similarly: if your employer has not made the rules accessible, you are entitled to ask.
This is frequently where the overtime cap, disciplinary grounds, and the retirement-age rule actually live. Article 89 makes "matters concerning retirement, including dismissal grounds" a mandatory item of the work rules themselves, separate from what your individual contract says.16
The Standard Contract Structure: What Must Be There
With the three-document hierarchy in mind, work through your own contract item by item against what the statute requires.
Parties, Start Date, and Position
No dedicated statute covers this section beyond the Article 15 and Rule 5 disclosure items already covered above. The contract term, meaning your start date and, for a fixed-term contract, the end date, is itself one of the absolute disclosure items.15
Confirm the parties named, the legal entity actually employing you, not just a brand name, your start date, and your job title, all match what you were told during hiring.
Work Location and Duties
"Workplace and duties" is one of the absolute Article 15/Rule 5 disclosure items in every case (as of 2024-04, for the added scope-of-change component described below; confirm current figures with the Ministry of Health, Labour and Welfare).53
Since the April 2024 revision, the notice must separately state the scope of possible future change to both your workplace and your duties, not only the conditions at hiring (as of 2024-04).34 This addition exists because the scope of future change is exactly the fact pattern behind the transfer-clause and "other duties assigned" disputes covered later in this article.
Whether you have an explicit or implied agreement limiting your job type or duties changes the legal analysis materially. Where no such limitation exists, an employer's transfer or reassignment order is tested under the Supreme Court's 1986 Toa Paint balancing test.
Where a job-type limitation, explicit or implied, exists, the employer cannot order a change outside that scope without your individual consent, under the Supreme Court's 2024 Shiga Prefecture Social Welfare Council decision.910 Both frameworks are covered in full under Clauses That Warrant a Second Read below.
For readers on a work-permitting status of residence, the workplace and duties clause is not only a labor-law question. Immigration Services Agency reviews check whether your actual activity still matches your status of residence. A duties clause broad enough to move you into work outside your status is a risk an immigration lawyer or gyōseishoshi is best placed to assess before you sign.
Work Hours and Overtime Policy
Labor Standards Act Article 36 permits an employer to require overtime or holiday work beyond the statutory hours only under a labor-management agreement, the 36 agreement (36協定, saburoku kyōtei), filed with the labor standards inspection office.11
Since the 2019 work-style-reform amendment (large employers from April 2019, SMEs from April 2020), the statutory caps are set out below (as of 2019-04/2020-04 phase-in).11
| Limit | Cap |
|---|---|
| Standard monthly cap | 45 hours/month |
| Standard annual cap | 360 hours/year |
| Absolute annual ceiling, with a special-clause 36 agreement | 720 hours/year |
| Single-month combined cap (overtime plus holiday work) | Under 100 hours |
| Multi-month average cap | 80 hours or less, averaged over any 2- to 6-month period |
| Frequency limit | No more than 6 months per year exceeding the base 45-hour/month figure |
MHLW's plain-language guidance states that violating the Article 36 cap carries criminal penalties of up to six months' imprisonment or a fine of up to 300,000 yen, under Labor Standards Act Article 119.11 Multiple independent professional sources confirm this figure maps to Article 119; treat it as reliable, though this article does not quote Article 119's text directly.
Terminology
- 36協定 (saburoku kyōtei): the Article 36 labor-management agreement that is the legal precondition for any overtime or holiday work.11
Salary and Bonus
Wage determination, calculation, and payment method, and pay-raise provisions, are absolute Article 15/Rule 5 disclosure items. Bonus and other temporary-wage terms are a relative item, disclosed only if the employer has made such provisions (as of 2024).5
This article does not re-derive the discretionary-versus-guaranteed bonus framing already covered by category. Seishain, Keiyaku, Haken, and Arubaito: Japan's Employment Categories covers how bonus eligibility typically differs across the four employment categories; check your contract's bonus language against your own category using that framework.
Paid Leave
Leave, including annual paid leave, is an absolute Article 15/Rule 5 disclosure item (as of 2024).5
This article does not re-derive the statutory paid-leave grant schedule itself, meaning how many days you accrue per year of service. Seishain, Keiyaku, Haken, and Arubaito: Japan's Employment Categories covers that. What is specific to reading a contract correctly is grant timing and carryover language.
Practitioner commentary describes a two-year prescription period on your claim to annual paid leave under Labor Standards Act Article 115.12 In practice, unused leave from a given grant carries over for one additional year and then lapses, so a contract or work-rules provision that purports to forfeit leave faster than this is not enforceable to shorten that statutory period.
Retirement Age and Continued Employment
Under the Act on Stabilization of Employment of Elderly Persons, Article 8, an employer that sets a mandatory retirement age cannot set it below 60, except for a narrow category of jobs an MHLW ordinance designates as unsuited to older workers.13
Article 9 goes further: an employer that sets a retirement age below 65 must take one of three measures to secure stable employment to age 65 for workers who wish to continue. It must raise the mandatory retirement age to 65, introduce a continued-employment system that re-hires the worker after nominal retirement, or abolish the mandatory retirement age altogether.13
Since a 2021 amendment, Article 10-2 additionally asks employers to make efforts, an unpenalized effort obligation (doryoku gimu), to secure work opportunities to age 70 through one of five measures.1314
| Age threshold | Legal status | Source |
|---|---|---|
| Retirement age set below 60 | Prohibited, narrow ordinance-designated job exceptions aside | Art. 813 |
| Employment secured to 65 (if retirement age is below 65) | Mandatory; employer must choose one of 3 measures | Art. 913 |
| Work opportunity to 70 | Effort obligation only, unpenalized; 5 possible measures | Art. 10-21314 |
Article 10-2's age-70 provision asks employers to make efforts; it carries no penalty for non-compliance.14 Do not read it as equivalent to the binding age-65 obligation under Article 9. An employer that does nothing toward the age-70 measures has not broken the law the way one that ignores Article 9 has.
Article 89 requires the work rules to state "matters concerning retirement, including dismissal grounds." Expect the actual retirement-age figure to live in your work rules, not necessarily spelled out again in your individual contract.16
Dismissal Grounds
Labor Contracts Act Article 16 provides that a dismissal lacking objectively reasonable grounds, and not considered appropriate in general societal terms, is treated as an abuse of rights and is invalid.2
This is the operative statutory dismissal standard nationwide. The Act itself does not enumerate a separate list of permitted dismissal grounds; what counts as "objectively reasonable" is developed case by case through court application of this standard, not spelled out in the statute text.2
Article 89 requires an employer's work rules to include dismissal grounds as part of "matters concerning retirement." A dismissal ground not stated in the work rules is a fact pattern that weakens an employer's position under the Article 16 reasonableness test, though this is an application of the general standard rather than a separate rule of its own.126
Article 16's reasonableness test is fact-specific and decided case by case by courts, not by a checklist. Treat a missing dismissal ground in the work rules as one factor working in your favor in a contested dismissal, not as a guarantee. A contested dismissal is exactly the scenario where a bengoshi or shakai hoken roumushi read of your specific facts matters most.
Confidentiality
A confidentiality clause's practical force typically comes not from the employment contract alone but from the Unfair Competition Prevention Act's trade-secret regime. Article 2(6) defines a "trade secret" (営業秘密, eigyō himitsu) as technical or business information that is useful for business activities, kept secret through active secret management, and not publicly known, with all three elements required together.15
Articles 3 and 4 provide civil remedies: injunctive relief, meaning a court order stopping or prohibiting use or disclosure and requiring destruction of infringing products, and damages.15 Article 21 provides criminal penalties for trade-secret misappropriation by fraud or similar means: imprisonment with labor for up to 10 years, a fine of up to 20 million yen, or both, for individuals.15
Article 22 sets separate, higher corporate fines under dual liability (両罰規定, ryōbatsu kitei): up to 500 million yen for the trade-secret offenses above, rising to up to 1 billion yen where the offense involves use of the trade secret outside Japan.15
A confidentiality clause in a contract, standing alone, does not itself create trade-secret status. The information must independently satisfy the secret-management and non-public elements for the Act's remedies to be available.15
Signing a confidentiality clause does not, by itself, make information a legally protected trade secret. The information still has to be actually kept secret and independently qualify as useful, non-public business or technical information for the Unfair Competition Prevention Act's remedies to apply.15
Terminology
- 営業秘密 (eigyō himitsu): "trade secret," defined by the three-part test above under the Unfair Competition Prevention Act.15
Clauses That Warrant a Second Read
The sections above cover what a contract must contain. The clauses below are where the real risk sits, and where ranking checklist-style guides tend to stop short.
The Overtime Cap and the Fixed-Overtime (Minashi Zangyo) Trap
A fixed or deemed overtime pay scheme, minashi zangyo (also called kotei zangyodai), is not automatically unlawful. In the 2017 Koshinkai medical corporation case, the Supreme Court held that Labor Standards Act Article 37 only requires that the premium wage actually paid not fall below the statutorily calculated amount. Including the overtime premium within a base salary or fixed allowance is not itself contrary to Article 37.16
For a fixed-overtime scheme to be valid, the portion of pay that represents ordinary wages and the portion that represents the overtime premium must be clearly distinguishable, whether in the pay slip, the work rules, or the contract, so you can identify how many hours of overtime the fixed sum is deemed to cover.16
A minashi zangyo figure is frequently misread as meaning no more overtime pay is ever owed. Legally, it is a floor, not a ceiling. If your actual overtime, measured against the Article 36 caps and the Article 37 premium formula, exceeds what the fixed sum was calculated to cover, your employer must pay the difference.16
The Transfer-Anywhere Clause (転勤条項)
転勤条項 (tenkin jōkō), a transfer clause, is a contract or work-rules provision authorizing employer-directed relocation. Where you have no job-type or location limitation agreement, the leading framework comes from the Supreme Court's 1986 Toa Paint case.
A transfer order is not an abuse of the employer's 配転命令権 (haiten meirei-ken, reassignment authority) unless there is no genuine business necessity for the transfer, the order was made for an improper motive, or the order imposes a disadvantage on the worker significantly exceeding what a worker should ordinarily be expected to bear.9 Absent one of these three, a broad transfer clause is enforceable even against real personal hardship, including family separation in the original case.9
The 2024 Supreme Court Shiga Prefecture Social Welfare Council decision adds a limit distinct from Toa Paint. Where you and your employer have an explicit, or even an implied, agreement limiting your job type or duties, the employer cannot order a transfer or reassignment outside that scope without your individual consent. The Toa Paint balancing test does not override an existing job-type limitation.10
The Court found such an implied limitation on facts where a worker had been hired and had long worked specifically as a technician developing and modifying welfare equipment, despite no written limitation clause ever being signed.10
| Job-type or location limitation | Governing framework | Employer's authority |
|---|---|---|
| None, explicit or implied | 1986 Toa Paint balancing test | Broad; the transfer stands unless it lacks business necessity, reflects an improper motive, or imposes a disadvantage exceeding what's ordinarily expected9 |
| Explicit or implied limitation (for example, years of specialized work) | 2024 Shiga Prefecture Social Welfare Council decision | Employer cannot transfer or reassign outside that scope without the worker's individual consent10 |
Separately, the Child Care and Family Care Leave Act, Article 26, requires an employer planning a reassignment involving a change of workplace to give consideration to the child-care or family-care circumstances of a worker for whom the move would make continuing that care difficult.17
MHLW guidance clarifies that this "consideration" duty does not require the employer to cancel the transfer or take affirmative steps to reduce the burden. It requires only that the employer genuinely weighed the worker's circumstances, sought their input, and checked for care alternatives.17
The April 2024 labor-conditions-notice revision requiring disclosure of the scope of change to workplace and duties is the practical mechanism letting you check, at the offer stage, how broad your employer's transfer authority is meant to be (as of 2024-04; confirm current figures with the Ministry of Health, Labour and Welfare).34
A transfer clause's plain wording is not the end of the analysis. If years of specialized work created an implied job-type limitation, as the Supreme Court found for a long-serving welfare-equipment technician in 2024, a broad transfer clause cannot be used to move you outside that scope without your consent, whatever the clause itself says.10
Terminology
- 転勤条項 (tenkin jōkō): "transfer clause," a contract or work-rules provision authorizing employer-directed relocation.
- 配転命令権 (haiten meirei-ken): "reassignment order authority," the employer's directive right tested under the Toa Paint framework.9
Post-Employment Non-Compete
There is no single, codified statute establishing a reasonableness test for post-employment non-compete clauses in Japan. The governing framework comes from case law applying the Civil Code's public-order and good-morals provision to restraints on trade, later synthesized in METI guidance rather than codified in the Labor Standards Act or Labor Contracts Act. Non-compete enforceability is judicial doctrine plus administrative synthesis, not a statute-level citation the way Article 15 or Article 16 are.1819
The leading case is the Nara District Court's 1970 Foseco Japan Limited decision. It held that a competition restriction is void as contrary to public order and good morals if it exceeds a reasonable scope and unduly restrains a worker's freedom to choose an occupation or threatens their livelihood.18 Reasonableness is assessed from three perspectives: the employer's interest in protecting trade secrets, the worker's disadvantage in re-employment, and the broader social interest, weighing the restriction's duration, geographic scope, the range of prohibited occupations or industries, and whether compensation was provided.18
Professional legal commentary describing METI's Handbook for the Protection of Trade Secrets organizes this case law into six factors courts weigh. Multiple independent professional sources describe the same six factors and attribute them to the handbook's own reference material by name and section; the METI PDF itself returned an access error on direct fetch, so treat the six factors as a well-corroborated practitioner synthesis rather than a verbatim government-text quotation.19
| Factor | What it asks |
|---|---|
| Legitimate business interest | Is there a real trade secret or business interest worth protecting? |
| Worker's seniority or position | How senior or specialized was the worker's role? |
| Geographic scope | How broad an area does the restriction cover? |
| Duration | How long does the restriction last? |
| Scope of prohibited activity | How broadly does it restrict competitive work? |
| Compensation | Did the employer pay for the restriction? |
Whether compensation was offered for the restriction is one of these weighed factors, and a documented ground courts have used to find a non-compete clause unenforceable.1819
IP and Invention Assignment
Patent Act Article 35 governs "employee inventions" (職務発明, shokumu hatsumei). Where a contract, work rules, or other provision states in advance that the right to obtain a patent for an employee's job-related invention will belong to the employer, that right vests in the employer from the moment the invention arises, rather than requiring a later assignment.20
In exchange, Article 35 gives the employee inventor a statutory right to 相当の利益 (sōtō no rieki, "reasonable benefit"), which, since a 2015 amendment effective 2016, may take monetary or non-monetary economic forms, not only cash remuneration.20 This replaced the older "reasonable remuneration" (相当の対価, sōtō no taika) standard.20
Article 35(4) and (5) direct that, where an employer sets its own compensation scheme by internal rule, the amount must not be found unreasonable when the entire process, meaning how criteria were set, whether employees were consulted, and how the determination was actually made, is evaluated comprehensively.20 Courts and the Japan Patent Office's own guideline look at the whole process, not just the final figure.
Since the 2015 amendment, the reasonable-benefit entitlement for an employee invention can take non-monetary economic forms, such as stock options or further training, not only a cash payment.20 What matters under the Act is the fairness of the process that set it, not only the final number.
Terminology
- 職務発明 (shokumu hatsumei): "employee invention," an invention made by an employee within the scope of their job duties.20
- 相当の利益 (sōtō no rieki): "reasonable benefit," the statutory entitlement owed to an employee inventor whose invention rights pass to the employer.20
The "Any Other Duties Assigned" Clause
Whether a broad "other duties as the company assigns" clause is enforceable turns on the same job-type-limitation analysis already covered for the transfer clause above. Where your duties are not limited by explicit or implied agreement, your employer's discretion to assign different duties is tested under the same abuse-of-rights framework, the business-necessity, improper-motive, and undue-disadvantage factors from the Toa Paint line of cases.9
Where a job-type limitation exists, explicit or implied, the 2024 Shiga Prefecture Social Welfare Council decision confirms your employer cannot use a general "other duties assigned" clause to override that limitation without your individual consent. The same decision that reshaped the transfer-clause analysis above applies here for the same reason: the Court found an implied job-type limitation on facts where a worker had long worked specifically as a technician developing and modifying welfare equipment, despite no written limitation clause.10
The practical read-before-signing implication: an "any other duties assigned" clause's real scope depends heavily on what the rest of your contract, your title, job description, and recruitment materials, implies about whether your role was understood as type-limited. It does not depend on the boilerplate clause's wording alone.910
If your actual work drifts far enough from what your status of residence permits, a broad "other duties assigned" clause will not protect you at renewal or in a status inquiry. This is where labor-contract risk and immigration risk overlap directly: consult an immigration lawyer or gyōseishoshi if your duties clause and your visa category could plausibly diverge.
Good to know
A minashi zangyo figure is a floor, not a ceiling
Workers frequently read a fixed-overtime ("minashi zangyo") figure as a ceiling on what they can be paid. Legally it is a floor: once actual qualifying overtime exceeds the hours the fixed sum was calculated to cover, the employer must pay the difference.16
An uncompensated non-compete clause is a documented red flag
Whether compensation was offered for the restriction is one of the recognized factors Japanese courts weigh in finding a post-employment non-compete unenforceable. A clause with no compensation and broad scope is high-risk regardless of phrasing.1819
A notice drafted before April 2024 may be missing required content
A labor conditions notice drafted before April 2024 would not have included the now-mandatory scope-of-change item for workplace and duties. If you received an older-format template, you have grounds to ask, in writing, for the missing item before signing.34
The "10 or more employees" work-rules threshold is counted per workplace, not per company
A worker at a small branch office of a large company may or may not be covered by registered work rules, depending on that specific workplace's headcount, not the employer's total size. This is easy to mistake for a jurisdictional rule; it is not. It is a per-workplace headcount rule that applies identically nationwide.1
A job title alone can create an implied duty limitation the boilerplate clause doesn't override
The 2024 Supreme Court decision found an implied job-type limitation from years of specialized work, despite no written limitation clause. The wording of your transfer or "other duties assigned" clause is not the whole story; what you were actually hired and long understood to do can matter just as much.10