JapanWork rules changed to reduce salary. Must I comply?
No, you do not have to comply if the salary reduction violates the Labor Contract Act or lacks reasonable grounds and proper procedure.
What the Law Says
Japanese labor law strictly limits an employer’s ability to unilaterally reduce wages. Any change to employment conditions — especially salary — must meet statutory requirements for validity, fairness, and procedural correctness.
Under the Labor Contract Act, an employer may not change working conditions (including salary) in a way that is 'unreasonable' or contrary to the employee's 'reasonable expectations'.
Article 10 of the Labor Contract Act states: 'A change to the terms of a labor contract by means of an amendment to work rules shall not take effect with respect to a worker who does not consent to the change, unless the change is reasonable in light of the degree of disadvantage imposed on the worker, the necessity for the change, the appropriateness of the new terms, and the degree of effort made to gain the worker’s understanding.'
The Labor Standards Act (Act No. 49 of 1947), Article 24, prohibits wage reductions as punishment and requires wages to be paid in full — except for limited, lawful deductions (e.g., taxes, social insurance, up to 15% of wages under specific conditions).
Employers must give at least 30 days’ notice before applying revised work rules affecting wages (Labor Standards Act, Article 106). Even with notice, unilateral reduction without consent is invalid unless it satisfies the reasonableness test under the Labor Contract Act.
Statutory TextA change to the terms of a labor contract by means of an amendment to work rules shall not take effect with respect to a worker who does not consent to the change, unless the change is reasonable in light of the degree of disadvantage imposed on the worker, the necessity for the change, the appropriateness of the new terms, and the degree of effort made to gain the worker’s understanding.
— Labor Contract Act, s. 10 — Validity of Changes to Labor Contracts
Statutory TextWages shall be paid in full to workers. However, deductions from wages may be made only where permitted by laws and regulations or where agreed upon in a labor agreement concluded in accordance with the Labor Union Act.
— Labor Standards Act, s. 24 — Payment of Wages
What to Do
Review the revised work rules and confirm whether you were given written notice at least 30 days in advance.
Check whether the salary reduction was justified by objective business necessity and whether alternatives were considered.
Refuse consent in writing if the change is unreasonable or violates your existing labor contract.
File a complaint with the Labor Standards Inspection Office if your employer enforces the cut without consent or lawful basis.
Consult a labor lawyer or union representative within 2 years — the statute of limitations for wage-related claims under the Labor Standards Act.
Sources
Same Question, Other Jurisdictions
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Singapore
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South KoreaNot legal advice. This article is general information based on publicly available sources, written for educational purposes. Laws change and individual situations vary. Consult a licensed attorney in your jurisdiction before acting on anything you read here. Last reviewed: 2026-06-08.