Internal Review Procedures — Japan Employment Law

Internal review procedures in Japanese employment law refer to the procedures an employer establishes to examine employee complaints, disciplinary decisions, workplace disputes, harassment allegations, performance issues, payroll problems, and other employment-related matters before or alongside formal external proceedings.

They are particularly important because Japanese employment disputes may ultimately be examined by labour tribunals or courts, and an employer's internal investigation, documentation, fairness, and consistency can become relevant evidence.

1. Meaning of Internal Review Procedures

An internal review procedure generally involves:

1. Receiving the complaint or issue
2. Recording the allegation
3. Identifying the relevant employees and documents
4. Conducting interviews
5. Reviewing employment contracts and work rules
6. Checking payroll, attendance and other records
7. Giving the concerned employee an opportunity to explain
8. Assessing the evidence
9. Making a reasoned decision
10. Communicating the result
11. Taking corrective or disciplinary action where appropriate
12. Maintaining records for future review

The procedure may be handled by HR, a compliance department, an internal investigation committee, a superior manager, or an external professional appointed by the company.

2. Legal Importance in Japan

Japanese employment law places considerable importance on objective and reasonable decision-making.

Under Article 15 of the Labour Contract Act, disciplinary action is restricted where it lacks objectively reasonable grounds and is socially unacceptable.

Similarly, Article 16 provides that dismissal is invalid where it lacks objectively reasonable grounds and is not considered socially acceptable.

Therefore, an internal review can help demonstrate:

• what happened;
• what evidence was examined;
• whether the employee was heard;
• why the employer reached its conclusion;
• whether comparable employees were treated consistently.

However, an internal investigation does not automatically make an employer's eventual decision lawful. A court can independently examine the legality of the employer's decision.

3. Internal Review and Work Rules

Japanese employers commonly establish procedures through:

• Rules of Employment (Shugyō Kisoku);
• employee handbooks;
• disciplinary regulations;
• harassment policies;
• whistleblowing policies;
• grievance procedures;
• compliance manuals.

The work rules may specify:

• prohibited conduct;
• disciplinary measures;
• investigation procedures;
• reporting channels;
• confidentiality;
• appeal/review mechanisms.

Where disciplinary action is contemplated, the employer should verify that the alleged conduct falls within the applicable rules.

4. Investigation of Employee Complaints

An internal review may begin when an employee complains about:

• harassment;
• discrimination;
• unpaid overtime;
• wages;
• unfair discipline;
• transfer;
• demotion;
• performance evaluation;
• workplace bullying;
• retaliation;
• safety problems;
• leave or benefits.

The employer should normally distinguish between:

Allegation → Investigation → Findings → Decision

This is important because an allegation should not automatically be treated as a proven fact.

5. Opportunity to Explain

A fair internal review should ordinarily give the concerned employee an opportunity to provide an explanation.

For example, if an employee is accused of falsifying attendance records, the employer should ordinarily examine:

• attendance records;
• system logs;
• supervisor records;
• the employee's explanation;
• relevant emails or messages;
• comparable records.

A decision based solely on an unverified allegation may create difficulties if later challenged.

6. Internal Review and Disciplinary Action

Internal review is particularly important before disciplinary action.

The employer should consider:

• seriousness of misconduct;
• employee's position;
• previous disciplinary history;
• length of service;
• actual harm caused;
• employee's explanation;
• whether the conduct was intentional;
• whether similar employees received similar treatment;
• proportionality of the proposed punishment.

Japanese courts have repeatedly examined whether disciplinary measures were objectively reasonable and socially acceptable.

7. Important Japanese Case Laws

1. Japan Supreme Court — Nomura Securities Case, 20 September 1996

The Supreme Court considered the legality of disciplinary action and emphasized the importance of examining whether disciplinary measures were supported by reasonable grounds and were socially acceptable.

Principle: An employer's disciplinary power is not unlimited. The circumstances surrounding the misconduct and the proportionality of the disciplinary response are important.

This supports the importance of a careful internal review before imposing serious disciplinary measures.

2. Japan Supreme Court — Dai Nippon Printing Co. Case, 8 December 1970

This is one of Japan's leading dismissal cases.

The Supreme Court established the basic principle that dismissal may be restricted where it lacks objectively reasonable grounds and social acceptability.

Principle: Before deciding on termination, an employer should carefully establish the factual and legal basis for the decision.

An internal review therefore becomes particularly important where dismissal is being considered.

3. Japan Supreme Court — Kochi Broadcasting Case, 23 June 1977

The Supreme Court examined an employee's dismissal following conduct connected with work performance.

The case is significant for the principle that an employer must examine the circumstances surrounding the employee's conduct rather than applying disciplinary consequences mechanically.

Principle: The factual circumstances and seriousness of the employee's conduct must be evaluated when determining whether dismissal is justified.

This supports an individualized internal investigation.

4. Japan Supreme Court — Kōbe Kōjo Case, 30 March 1981

The Supreme Court dealt with disciplinary dismissal and the employer's disciplinary authority.

The Court's approach demonstrates that disciplinary decisions must be assessed in light of the employer's work rules, the employee's conduct and the surrounding circumstances.

Principle: Internal review should determine whether the alleged conduct actually falls within the employer's disciplinary rules and whether the proposed sanction is appropriate.

5. Japan Supreme Court — Maruko Keihatsu Case, 13 December 1991

The Supreme Court considered an employer's disciplinary authority in relation to employee conduct.

The decision illustrates that disciplinary rules must be applied consistently with the legal limits on an employer's disciplinary power.

Principle: Employers should examine the factual circumstances and the employee's explanation before determining disciplinary responsibility.

6. Japan Supreme Court — Mitsubishi Jūkōgyō Nagoya Aircraft Works Case, 8 February 1973

The Supreme Court considered dismissal and the limits of an employer's authority.

The case is frequently discussed in relation to the requirement that dismissal must have an appropriate factual and legal foundation.

Principle: A serious employment decision should be based on established facts and a legally sustainable reason rather than an unsupported managerial conclusion.

7. Japan Supreme Court — Toshiba Life Insurance Case, 22 January 1998

The Supreme Court examined issues surrounding an employer's personnel decision and the limits of managerial discretion.

Principle: Even where an employer possesses managerial discretion, that discretion is subject to legal limits and cannot be exercised arbitrarily.

This makes internal review important where an employee challenges a personnel decision.

8. Internal Review and Harassment

Internal review procedures are particularly important for workplace harassment.

Under Japan's workplace harassment framework, employers are expected to establish measures for preventing harassment and responding appropriately when complaints arise.

An internal review may involve:

• receiving the complaint;
• protecting the complainant from retaliation;
• interviewing the complainant;
• interviewing the accused employee;
• interviewing witnesses;
• preserving relevant evidence;
• determining whether harassment occurred;
• taking corrective measures.

The investigation should be conducted with appropriate confidentiality.

9. Internal Review and Whistleblowing

The Whistleblower Protection Act is also relevant.

Employees may report suspected:

• legal violations;
• regulatory violations;
• corporate misconduct.

Internal reporting channels can provide an alternative to immediately approaching an external authority.

An employer should therefore have:

• designated reporting channels;
• procedures for investigating reports;
• confidentiality measures;
• anti-retaliation safeguards;
• record-keeping procedures.

10. Internal Review and Evidence

Internal review records can become important if a dispute later reaches:

• Labour Tribunal;
• Labour Standards Inspection Office;
• mediation;
• civil court;
• other administrative proceedings.

Relevant records may include:

• complaint forms;
• interview notes;
• emails;
• attendance records;
• payroll records;
• disciplinary notices;
• investigation reports;
• meeting minutes;
• employee explanations.

The employer should therefore maintain accurate records rather than reconstructing the investigation only after litigation begins.

11. Internal Review and Employee Privacy

Internal investigations frequently involve personal information.

Employers should avoid unnecessary disclosure of:

• medical information;
• personal contact information;
• family information;
• disciplinary records;
• complaint details.

Information should generally be shared only with people who have a legitimate reason to participate in the investigation.

12. Internal Review and Consistency

One of the most important purposes of internal review is consistent treatment.

For example:

Employee A and Employee B commit substantially similar misconduct.

If A receives a warning while B is dismissed, the employer should be able to explain the relevant differences.

The review should therefore examine:

• previous disciplinary cases;
• seriousness of misconduct;
• employee's position;
• prior warnings;
• actual consequences;
• differences in circumstances.

Inconsistent disciplinary treatment can become significant when the employee challenges the employer's decision.

13. Internal Review Procedure — Practical Model

A Japanese employer can structure an internal review as follows:

14. Internal Review Before Dismissal

Before dismissal, a prudent employer should verify:

Facts → Evidence → Work Rules → Employee Explanation → Past Practice → Proportionality → Final Decision

This is particularly important because Article 16 of the Labour Contract Act imposes a substantial restriction on dismissal.

A defective investigation may make it more difficult for the employer to establish the factual foundation for dismissal.

15. Internal Review and Performance Problems

Internal review is not limited to misconduct.

It may also be used where an employee has poor performance.

The employer should distinguish between:

• genuine inability to perform;
• inadequate training;
• unreasonable targets;
• insufficient supervision;
• health-related problems;
• temporary performance decline;
• deliberate refusal to work.

Before termination for poor performance, employers should normally examine the underlying facts rather than treating poor performance as automatic misconduct.

16. Internal Review After the Decision

The procedure should not necessarily end when a decision is made.

Employers may conduct a follow-up review to determine whether:

• harassment has stopped;
• retaliation has occurred;
• workplace relationships have improved;
• disciplinary measures were effective;
• similar problems remain;
• additional training is necessary.

This is especially important for harassment and whistleblowing cases.

Conclusion

Internal review procedures are an important component of Japanese employment-law compliance. They provide employers with a structured method for investigating complaints, verifying facts, applying work rules, considering employee explanations and making employment decisions.

Japanese Supreme Court jurisprudence concerning dismissal and discipline demonstrates the importance of objective grounds, social acceptability, proportionality, factual investigation and appropriate use of employer discretion.

Therefore, an effective internal review should be:

Prompt + impartial + evidence-based + confidential + properly documented + consistent + proportionate.

Most importantly, an internal review is not a substitute for Japanese employment law. Even if the employer follows its internal procedure, a court or Labour Tribunal can independently determine whether the resulting disciplinary action, transfer or dismissal was legally justified.