The Employment Contract Act sets basic civil-law rules for employment contracts in Japan, including contract formation, changes through agreement or Work Rules, safety consideration, transfers, discipline, dismissal, and fixed-term contracts. Employers, workers, HR teams, and researchers consult it when checking the statutory rule behind a work-rule change, dismissal clause, fixed-term renewal, or conversion request. This article covers the Act's main provisions and does not cover collective bargaining, labor tribunal procedure, social insurance, or case-specific employment advice.
Purpose, Definitions, and Contract Principles
The opening chapter defines Worker and Employer for the Act and states principles that guide employment contracts. Articles 1 through 5 are the main provisions before formation and change rules begin.
Article 1 states that the Act aims to protect Workers and contribute to stability of individual labor relationships by setting basic matters concerning labor contracts, including the principle that a labor contract is established or changed by agreement under voluntary negotiation between Worker and Employer. Article 2 defines Worker as a person who works being employed by an Employer and receives Wages, and defines Employer as a person who pays Wages to Workers used by that person.
Article 3 states that a labor contract should be concluded or changed based on agreement between Worker and Employer on an equal footing. It also requires consideration of balance according to actual employment conditions, consideration for work-life harmony, good-faith exercise of rights and performance of obligations, and non-abuse of rights arising under a labor contract.
Article 4 requires the Employer to deepen the Worker's understanding of working conditions and labor-contract content presented to the Worker. Article 4(2) states that Worker and Employer should confirm labor-contract content, including matters concerning fixed-term labor contracts, in writing as much as possible. Article 5 requires the Employer, accompanying the labor contract, to give necessary consideration so that the Worker can work while securing safety of life and body.
Formation and Change Through Work Rules
The Act connects individual agreement with workplace-wide Work Rules. Articles 6, 7, 8, 9, 10, 11, 12, and 13 are the provisions to check when a contract term and Work Rules interact.
Article 6 states that a labor contract is formed by agreement that the Worker works while being employed by the Employer and that the Employer pays Wages for that work. Article 7 provides that when Worker and Employer conclude a labor contract and the Employer has made known to the Worker Work Rules prescribing reasonable working conditions, the labor-contract content is based on those Work Rules, except for agreed parts with different working conditions unless Article 12 applies.
Article 8 states that Worker and Employer may change labor-contract working conditions by agreement. Article 9 gives the default rule for disadvantageous work-rule changes: the Employer may not change labor-contract working conditions disadvantageously to the Worker by changing Work Rules without the Worker's agreement, except in the Article 10 case. Article 10 allows working conditions to be changed according to changed Work Rules if the changed Work Rules are made known to Workers and the change is reasonable considering the degree of disadvantage, necessity of the change, appropriateness of the changed Work Rules, negotiation status with labor unions, and other circumstances.
Article 11 refers procedures for changing Work Rules to Article 89 and Article 90 of the Labor Standards Act. Article 12 makes labor-contract terms that fall below Work Rule standards invalid for that part and replaces the invalid part with the Work Rule standard. Article 13 states that if Work Rules conflict with laws and regulations or a collective agreement, Articles 7, 10, and 12 do not apply to the conflicting part for Workers covered by those laws, regulations, or collective agreement.
Transfers, Discipline, and Dismissal
Chapter III addresses continuation and ending of labor contracts. Articles 14, 15, and 16 are short, but each provision affects a high-stakes employer action.
Article 14 applies where an Employer may order a Worker to be seconded. If the secondment order is found to abuse the right in light of the necessity of the secondment, circumstances concerning selection of the target Worker, and other circumstances, the order is invalid. The article does not list every factor for every secondment case; it sets the statutory abuse-of-right standard.
Article 15 applies where an Employer may discipline a Worker. If the discipline lacks objectively reasonable grounds and is not considered appropriate in general societal terms in light of the nature and mode of the Worker's conduct and other circumstances, it is invalid as an abuse of rights. The article ties disciplinary validity to both objective reasonableness and social appropriateness.
Article 16 states the basic dismissal rule. A dismissal is invalid as an abuse of rights if it lacks objectively reasonable grounds and is not considered appropriate in general societal terms. This provision identifies the statutory standard for dismissal validity, but whether the standard is met depends on the facts and applicable procedure in the individual case.
Fixed-Term Contracts and Conversion
Chapter IV gives special rules for fixed-term labor contracts. Articles 17, 18, and 19 are central for mid-term dismissal, repeated renewals, conversion to an indefinite-term contract, and refusal of renewal.
Article 17 prohibits an Employer from dismissing a Worker under a fixed-term labor contract during the contract term unless there is an unavoidable reason. Article 17(2) also requires the Employer to give consideration so as not to repeatedly renew a fixed-term labor contract by setting an unnecessarily short term in light of the purpose for using that contract.
Article 18 creates the conversion rule for fixed-term contracts. If the total contract period of two or more fixed-term labor contracts concluded with the same Employer exceeds five years, and the Worker applies for an indefinite-term labor contract before the current fixed-term contract expires, the Employer is deemed to accept the application. Article 18(1) states that the working conditions of the indefinite-term contract are the same as those under the current fixed-term contract, excluding the contract term, unless a separate provision exists for those conditions.
Article 18(2) contains the cooling-period rule for gaps between contracts, excluding certain prior contract periods from the total contract period if the gap reaches the statutory period. Article 19 addresses refusal to renew a fixed-term labor contract. If the contract has been repeatedly renewed and non-renewal is socially equivalent to dismissal of an indefinite-term Worker, or if the Worker has a reasonable expectation of renewal, the Employer is deemed to accept the Worker's renewal or new-contract application when refusal lacks objectively reasonable grounds and is not socially appropriate.
Mariners and Excluded Relationships
The final chapter limits how the Act applies to particular workers and employment relationships. Articles 20 and 21 should be checked before assuming the Act applies to every worker-like relationship.
Article 20 provides special rules for mariners covered by the Mariners Act. It states that Article 12 and Chapter IV do not apply to those mariners, and it replaces references to Labor Standards Act Work Rule provisions with Mariners Act provisions for the relevant articles. This keeps fixed-term and work-rule rules from being applied mechanically where the Mariners Act has its own system.
Article 21 excludes national public employees and local public employees from the Act. It also excludes labor contracts where the Employer employs only relatives living together. These exclusions mean that the Employment Contract Act is a central statute for many private employment relationships, but it is not a universal rule for every relationship involving work and payment.