Workplace Investigations
Contributing Editors
Workplace investigations are growing in number, size and complexity. Employers are under greater scrutiny as of the importance of ESG rises. Regulated industries such as finance, healthcare and legal face additional hurdles, but public scrutiny of businesses and how they treat their people across the board has never been higher. Conducting a fair and thorough workplace investigation is therefore critical to the optimal operation, governance and legal exposure of every business.
IEL’s Guide to Workplace Investigations examines key issues that organisations need to consider as they initiate, conduct and conclude investigations in 29 major jurisdictions around the world.
Learn more about the response taken in specific countries or build your own report to compare approaches taken around the world.
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01. What legislation, guidance and/or policies govern a workplace investigation?
01. What legislation, guidance and/or policies govern a workplace investigation?
Japan
Japan
- at Mori Hamada & Matsumoto
There is no specific legislation, guidance or policies covering investigations in the workplace. Issues such as the Personal Data Protection Law, invasion of privacy, and infringement of freedoms may arise regarding the related parties, subjects, methods, and results of investigations. In addition, court decisions have stated that "when there has been a violation of corporate order, an investigation of the facts may be conducted to clarify the nature of the violation, issue business instructions or orders necessary to restore the disturbed order or take disciplinary action against the violator as a sanction”. The investigation or order must be reasonable and necessary for the smooth operation of the enterprise, and the method and manner of the investigation or order must not be excessive or restrain an employee's personality or freedom. In such a case, the investigation may be considered to be illegal and may constitute a tort.
Nigeria
Nigeria
- at Bloomfield LP
- The Constitution of the Federal Republic of Nigeria, 1999 (as amended)
- The Criminal Code Act
- Penal Code Law
- Money Laundering (Prohibition) Act 2011 (as amended)
- Freedom of Information Act 2011
- Terrorism (Prevention) Act 2013
- Independent Corrupt Practices and other related offences Act 2000
- Code of Conduct Bureau and Tribunal Act
- Companies and Allied Matters Act 2020
- Nigerian Code of Corporate Governance 2018
- Economic Financial Crime Commission (Establishment) Act 2004
- Investment Securities Act 2007
- Central Bank of Nigeria Act 2007
- Banks and Other Financial Institutions Act 2020
- Whistleblowing Programme under the Ministry of Finance
02. How is a workplace investigation usually commenced?
02. How is a workplace investigation usually commenced?
Japan
Japan
- at Mori Hamada & Matsumoto
The trigger for an investigation in the workplace may be:
- when an employee makes a report (eg, a report of harassment, a report of misconduct by another employee, etc);
- when an investigation is conducted by the Labour Standards Inspection Office or another regulatory agency;
- when a criminal or illegal act is discovered in the workplace; or
- when an internal audit conducted by the company reveals a problem.
Nigeria
Nigeria
- at Bloomfield LP
A workplace investigation is conducted to verify alleged misconduct within a workplace.[1] Once a complaint is made regarding wrongdoing, misconduct or unethical behaviour by an employee or group of employees within a workplace, an investigation is required to confirm the complaint and if it is confirmed, the body in charge of supervising the employees (usually the HR specialist, disciplinary committee or line managers) determine and implement necessary corrective or disciplinary actions.
03. Can an employee be suspended during a workplace investigation? Are there any conditions on suspension (eg, pay, duration)?
03. Can an employee be suspended during a workplace investigation? Are there any conditions on suspension (eg, pay, duration)?
Japan
Japan
- at Mori Hamada & Matsumoto
Court precedent states that a valid requirement for a stay-at-home order is it “would not be considered to put employees at a legal disadvantage (deprive them of their rights and imposes obligations on them), except in exceptional cases where employees are legally entitled to request work, unless there are special circumstances such as discrimination in salary increases and the like." (Tokyo High Court decision 25 January 2012, All Japan Mariners' Union). Therefore, it is considered possible to order the employee to stay at home during the investigation period if necessary. Some companies stipulate in their work rules that they may order employees to take special leave or stay at home when an incident occurs that could be the subject of disciplinary action.
In principle, the payment of salary in full during the stay-at-home period is required. However, work rules may stipulate that an employee will not be paid during the investigation period, and in cases where the employee is clearly responsible and it is inappropriate to allow the employee to work (eg, where it is almost certain that the employee has embezzled money on the job), the employee may be ordered to stay at home without pay. In addition, if the work rules stipulate that an absence allowance under the Labour Standards Law (60% or more of wages) must be paid for the stay-at-home period, such an allowance may be paid under the said rules.
Nigeria
Nigeria
- at Bloomfield LP
Yes, an employee can be suspended during an investigation to allow the employer to investigate the allegations against the employee unhindered and without undue interference by that employee. A suspension under the law merely prevents the employee from discharging the ordinary functions of his or her role without any deprivation of his rights during the period of the suspension. Thus, unless there is an express provision in the contract of employment or employee’s handbook stating that the employee can be suspended with or without half pay, the employee would be entitled to a full salary.
Further, the duration for which the employee may be suspended should be as contained in the employee’s contract, employee’s handbook, or letter of suspension.
In the recent case of GLOBE MOTORS HOLDINGS NIGERIA LIMITED v. AKINYEMI ADEGOKE OYEWOLE (2022), the court held, “Since suspension is not a termination of the employment contract nor a dismissal of the employee, the implication is that the employee is still in continuous employment of the employer until he is recalled or formally terminated or dismissed. Pending his recall or dismissal, a suspended employee is entitled to his wages or salary during the period of suspension, unless the terms of the contract of employment or the letter of suspension itself is specific that the suspended employer will not be paid salaries during the period of suspension”.
04. Who should conduct a workplace investigation, are there minimum qualifications or criteria that need to be met?
04. Who should conduct a workplace investigation, are there minimum qualifications or criteria that need to be met?
Japan
Japan
- at Mori Hamada & Matsumoto
There are no specific qualifications or requirements for an investigator. In many cases, the investigation is handled by a department or employee as deemed appropriate by the company. In some cases, an outside attorney may be asked to handle the investigation. Also, when it is a serious matter for the company, a third-party committee may be formed and commissioned to conduct an investigation.
However, under the revision of the Whistleblower Protection Act, which came into effect in June 2022, entities employing 300 or more employees must designate a person (whistleblower response service employee) in charge of accepting internal whistleblowing reports, investigating internal whistleblowing reports, or taking corrective measures as a whistleblower response service provider. Entities with less than 300 employees must also make an effort to do the same.
The person designated as a whistleblower response service provider must not divulge the name, employee ID number, or other information that would enable whistleblower identification without a justifiable reason. Criminal penalties (fines of up to 300,000 yen) have been established for violations of this confidentiality obligation.
Nigeria
Nigeria
- at Bloomfield LP
Typically, the legal department, the chief compliance officer, the HR manager, the audit committee or any other committee as may be set up by the company may conduct a workplace investigation. However, in other instances, the company may engage the services of independent external personnel to assist with conducting an internal investigation.
The minimum qualification or criteria of the person conducting the investigation should be as contained in the relevant company policies. Criteria may include independence, objectivity and impartiality.
05. Can the employee under investigation bring legal action to stop the investigation?
05. Can the employee under investigation bring legal action to stop the investigation?
Japan
Japan
- at Mori Hamada & Matsumoto
There are very few cases in which an employee subject to an investigation can file a legal proceeding to have the investigation stopped. Theoretically, an employee may be able to file a lawsuit or a provisional disposition to stop the investigation if he or she has a legal right to request that the company stop the investigation, but usually a lawsuit or a petition for a provisional disposition alone will not stop an investigation from proceeding. Although a provisional injunction would conclude in a relatively short period, such a provisional injunction would be unlikely to be issued if the investigation is conducted properly.
Nigeria
Nigeria
- at Bloomfield LP
Generally, issues surrounding workplace investigations are usually embedded in either the employee’s contract or handbook, which is binding on the employee. Thus, an employee cannot validly bring an action to stop the investigation unless his rights as guaranteed by the Constitution, the Employee’s handbook, and other laws such as a right to a fair hearing are violated during the investigation.
Consequently, the employee may apply to the National Industrial Court for an order of interim relief against his or her employer restraining further prejudicial investigation.
06. Can co-workers be compelled to act as witnesses? What legal protections do employees have when acting as witnesses in an investigation?
06. Can co-workers be compelled to act as witnesses? What legal protections do employees have when acting as witnesses in an investigation?
Japan
Japan
- at Mori Hamada & Matsumoto
Interviewing co-workers is often conducted in internal investigations. Company employees are generally required to cooperate with company investigations, especially those who are in a position to instruct and supervise employees, or those who are responsible for maintaining corporate order, since cooperation with an investigation is itself the fulfilment of their duty to the company. Other employees are not compelled to cooperate with such an investigation unless it is deemed necessary and reasonable. No specific legal protection is provided for testifying in an investigation.
Nigeria
Nigeria
- at Bloomfield LP
The employee’s contract, employee handbook or company policies typically mandate an employee to cooperate and participate in good faith in any lawful internal investigation undertaken by the company, and also protects an employee acting as a witness in an internal investigation. Some of the legal protections available to an employee acting as a witness during workplace investigations are freedom from intimidation, threats or the loss of employment.
07. What data protection or other regulations apply when gathering physical evidence?
07. What data protection or other regulations apply when gathering physical evidence?
Japan
Japan
- at Mori Hamada & Matsumoto
When collecting physical evidence that contains personal information, the Personal Information Protection Law and its related guidelines apply. In addition, when collecting physical evidence that contains privacy information or an employee's photograph, care must be taken to ensure that the right to privacy and the image rights are not violated.
Nigeria
Nigeria
- at Bloomfield LP
When gathering evidence, the person being investigated is protected by the Constitution, the Freedom of Information Act and the Nigerian Data Protection Regulation (NDPR), among others.
The Constitution, particularly section 37, guarantees the right of a person to privacy.
The NDPR is the main data protection regulation in Nigeria. It regulates the processing and transfer of personal data.
Further, the Freedom of Information Act, 2011 prohibits the disclosure of information gathered during an investigation to the public.
08. Can the employer search employees’ possessions or files as part of an investigation?
08. Can the employer search employees’ possessions or files as part of an investigation?
Japan
Japan
- at Mori Hamada & Matsumoto
Since inspections of personal belongings may potentially undermine employees' fundamental human rights, they would not become lawful simply because they are conducted under employment regulations.
Inspections of personal belongings must be conducted uniformly among employees in the workplace based on reasonable grounds, in a generally reasonable manner and to a generally reasonable degree, and based on the work rules, etc.
When inspections of personal belongings are conducted under employment regulations, etc, employees must agree to the inspection except in special circumstances, such as the method or degree of the inspection being unreasonable.
On the other hand, an investigation of information stored on a company network system may constitute an infringement of the right to privacy. If there is a provision in the employment regulations regarding the use of the internet and monitoring, it is possible to investigate under such a provision. A Japanese court case on the illegality of reading e-mails in the absence of a monitoring provision stated that private use of e-mails also carries a certain right to privacy, but also stated that "considering the fact that the system is maintained and managed by the company, the protection of the employee's privacy can only be expected within a reasonable range according to the specific circumstances of the system," and that the act of reading e-mails was not illegal because the extent of private use of e-mails was beyond the limit, which was outside the reasonable range of socially accepted ideas. The court also ruled that the monitoring of the employee's abusive private use of e-mail, which was discovered in the course of an investigation of slanderous e-mails within the company, was not illegal because even if the monitoring was conducted without notice, there was suspicion of a violation of the duty of devotion to duty and corporate order. The court also stated that the investigation was necessary and that the scope of the investigation did not exceed its limit.
Nigeria
Nigeria
- at Bloomfield LP
Yes, an employer can search the possessions or files of an employee as part of an investigation where the employee’s contract or handbook authorises such a search and there is a reasonable suspicion of wrongdoing.
09. What additional considerations apply when the investigation involves whistleblowing?
09. What additional considerations apply when the investigation involves whistleblowing?
Japan
Japan
- at Mori Hamada & Matsumoto
See question 4 regarding amendments to the Whistleblower Protection Act.
The person designated as a whistleblower response service employee must not divulge the name, employee ID number, or other information that would allow a whistleblower to be identified without a justifiable reason, and there is a criminal penalty of up to 300,000 yen for violating this duty of confidentiality.
Nigeria
Nigeria
- at Bloomfield LP
Consideration must be given to the confidentiality or anonymity of the whistleblower, when an investigation involves whistleblowing.
10. What confidentiality obligations apply during an investigation?
10. What confidentiality obligations apply during an investigation?
Japan
Japan
- at Mori Hamada & Matsumoto
See question 9 for the confidentiality obligations of a whistleblower response service employee.
Other than the above, there is no specific legal obligation to maintain confidentiality for persons in charge of investigations, etc. However, if the information falls under the category of confidential information obtained by employees in the course of their work, compliance is required as an obligation attached to a labour contract, and many employment regulations stipulate a duty to keep information obtained in the course of work confidential.
Nigeria
Nigeria
- at Bloomfield LP
Workplace investigations should be kept strictly confidential to protect the parties involved in the investigation from victimisation. Some of the confidential obligations that apply during investigations are the identities of the parties involved in the process (whether as a complainant, respondent or witnesses), the confidentiality of reports, recordings and other documents generated or discovered during the investigation, as well as attorney-client privilege between the employee and his or her attorney, provided that such privilege is within the bounds of the law.
11. What information must the employee under investigation be given about the allegations against them?
11. What information must the employee under investigation be given about the allegations against them?
Japan
Japan
- at Mori Hamada & Matsumoto
There are no specific legal stipulations or requirements regarding information, etc, that must be provided to employees who are the subject of an investigation.
Nigeria
Nigeria
- at Bloomfield LP
An employee must be given the full details of the allegations against him or her to enable the employee to make adequate representations against the complaints made against him or her.
12. Can the identity of the complainant, witnesses or sources of information for the investigation be kept confidential?
12. Can the identity of the complainant, witnesses or sources of information for the investigation be kept confidential?
Japan
Japan
- at Mori Hamada & Matsumoto
For whistleblowing investigations, whistleblower protection is required (see question 9).
Witnesses and other sources of information are not protected by the Whistleblower Protection Act.
In addition, as a response to a report of harassment, the Ministry of Health, Labour and Welfare guidelines require that necessary measures be taken to protect the privacy of the reporter, the offender, and others, and that these measures be announced to the company.
Nigeria
Nigeria
- at Bloomfield LP
Typically, the identities of the complainant, witnesses and sources of information for the investigation are kept confidential.
13. Can non-disclosure agreements (NDAs) be used to keep the fact and substance of an investigation confidential?
13. Can non-disclosure agreements (NDAs) be used to keep the fact and substance of an investigation confidential?
Japan
Japan
- at Mori Hamada & Matsumoto
It is possible to use NDAs in investigations.
Nigeria
Nigeria
- at Bloomfield LP
NDAs are usually part of an employee’s contract and, as such, create a contractual obligation between the parties privy to it. However, where the subject matter of an investigation borders on matters of a criminal nature, it might be impossible for parties to the NDA to continually uphold the obligation under the NDA because the parties have an obligation to the state to disclose facts of a criminal nature.
14. When does privilege attach to investigation materials?
14. When does privilege attach to investigation materials?
Japan
Japan
- at Mori Hamada & Matsumoto
There are no specific laws or rules for the provision of confidentiality privileges other than that provided by the Fair Trade Commission Rules, which allow companies that are the subject of investigations into cartels, bid rigging, etc, to treat communications with their lawyers as confidential. However, when a motion for an order to produce documents is filed in a court proceeding, if the requested documents are "documents exclusively for the use of the possessor of the documents", the obligation to produce the documents is not recognised. If the investigation materials fall under this category, it is possible to exclude them from the scope of the court order to produce documents.
Nigeria
Nigeria
- at Bloomfield LP
Privilege attaches to investigation materials when a legal practitioner facilitates the internal investigation. Documents prepared during a workplace investigation will not automatically attract legal professional privilege, unless the investigation is facilitated by a legal practitioner.
15. Does the employee under investigation have a right to be accompanied or have legal representation during the investigation?
15. Does the employee under investigation have a right to be accompanied or have legal representation during the investigation?
Japan
Japan
- at Mori Hamada & Matsumoto
There is no legal right to have a legal representative present or appointed during the investigation.
Nigeria
Nigeria
- at Bloomfield LP
The Constitution guarantees the right of every person to legal representation during investigations and interrogations by law enforcement agencies. However, our labour legislation is silent on whether an employee has a right to be accompanied or have legal representation during an investigation. Whether an employee has a right to legal representation will depend on the policy of the employer as well as the nature of the interrogation.
In practice, an employee is usually not accompanied or represented legally during an investigation. However, unless it is stipulated in the employee’s policy, nothing prohibits the employee from being accompanied or represented legally during an investigation.
16. If there is a works council or trade union, does it have any right to be informed or involved in the investigation?
16. If there is a works council or trade union, does it have any right to be informed or involved in the investigation?
Japan
Japan
- at Mori Hamada & Matsumoto
A labour union has no legal right to be involved in the investigation. However, if there is a provision in the collective bargaining agreement between the company and the labour union that allows the labour union to be involved in an investigation conducted by the company or to receive disclosure of the results of an investigation, then such a provision should be followed.
Nigeria
Nigeria
- at Bloomfield LP
The law is silent on whether a member of a trade union has the right to be informed or involved in the investigation. Typically, this is dependent on the employee’s contract, handbook or other policies of the employer.
17. What other support can employees involved in the investigation be given?
17. What other support can employees involved in the investigation be given?
Japan
Japan
- at Mori Hamada & Matsumoto
There is no legally established assistance programme.
Nigeria
Nigeria
- at Bloomfield LP
An employee being investigated has a right to be heard before a decision being made by the employer. Further, the body responsible for investigating the employee must be independent, so as not to be considered biased.
19. What if the employee under investigation raises a grievance during the investigation?
19. What if the employee under investigation raises a grievance during the investigation?
Japan
Japan
- at Mori Hamada & Matsumoto
Whether or not an investigation should be suspended when an employee under investigation files a complaint depends on the specific circumstances. There is no legal requirement to suspend the investigation.
Nigeria
Nigeria
- at Bloomfield LP
It is not unusual for an employee under investigation to raise a grievance during the investigation. This grievance may be on the same subject matter as the complaint being investigated or may disclose new facts outside the scope of the matter being investigated.
Where the issue discloses new facts, the employer is required to investigate those facts without suspending the investigation. However, where the grievance relates to the same subject matter as the complaint being investigated, the employer may either suspend the investigation to allow the investigation to recognise the grievance and the complaint against the employer or proceed with the investigation while noting that the matter disclosed is being or will be investigated.
20. What if the employee under investigation goes off sick during the investigation?
20. What if the employee under investigation goes off sick during the investigation?
Japan
Japan
- at Mori Hamada & Matsumoto
The company will seek a physician's diagnosis and opinion and determine whether to proceed with the investigation. If an employee’s mental health suffers because of the investigation, the company may be charged with a violation of its duty of care.
Nigeria
Nigeria
- at Bloomfield LP
The investigation would be suspended until the employee returns from sick leave. The investigation will immediately restart upon the return of the employee.
21. How do you handle a parallel criminal and/or regulatory investigation?
21. How do you handle a parallel criminal and/or regulatory investigation?
Japan
Japan
- at Mori Hamada & Matsumoto
It is possible to proceed with an investigation of a company even if there are concurrent criminal proceedings. It is up to the company to decide whether or not to proceed. The company may submit collected evidence collected to the police. The police will rarely disclose or provide the company with evidence they have collected. Usually, upon request by the police or regulator, the workplace investigation would be stayed. The police or regulator has to take legally required steps if compelling the employer to share evidence.
Nigeria
Nigeria
- at Bloomfield LP
Where an employee has committed misconduct at work that is also the subject of a police investigation, the employer can conduct its own investigation and does not have to await the outcome of the criminal proceedings. The Supreme Court, in the case of Dongtoe v CSC Plateau State (2001), held that it is preposterous to suggest that the administrative body should stay its disciplinary jurisdiction over a person who had admitted criminal offences.
Further, the police or regulator may compel the employer to share evidence with it in the interests of justice.
22. What must the employee under investigation be told about the outcome of an investigation?
22. What must the employee under investigation be told about the outcome of an investigation?
Japan
Japan
- at Mori Hamada & Matsumoto
Although there is no legal obligation to report the results of the investigation to the employee, when taking disciplinary action it is generally necessary, from a due process point of view, to explain the facts of the disciplinary action and the results of the investigation, and to allow the employee to explain him or herself. Particularly in the case of serious disciplinary actions such as dismissal, failure to provide an adequate opportunity for an explanation is a possible ground for denying the validity of the disciplinary action.
Nigeria
Nigeria
- at Bloomfield LP
The employee under investigation must be informed of the outcome of the investigation as soon as a decision is reached.
24. What next steps are available to the employer?
24. What next steps are available to the employer?
Japan
Japan
- at Mori Hamada & Matsumoto
In an investigation into an employee's misconduct, based on the results of the investigation, disciplinary action will be considered if there are grounds for disciplinary action, and dismissal will also be considered. Personnel actions (eg, dismissal, reassignment) may also be taken.
Nigeria
Nigeria
- at Bloomfield LP
Upon the completion and receipt of the findings of the investigation, the employer may affirm the employee’s innocence or take disciplinary action against them.
25. Who can (or must) the investigation findings be disclosed to? Does that include regulators/police? Can the interview records be kept private, or are they at risk of disclosure?
25. Who can (or must) the investigation findings be disclosed to? Does that include regulators/police? Can the interview records be kept private, or are they at risk of disclosure?
Japan
Japan
- at Mori Hamada & Matsumoto
If it is information related to a crime, and if it is necessary to report it to the supervisory authority, it is necessary and possible to report it even if the content relates to personal information. There is no obligation to report to the police even if one is aware of a criminal fact. However, it is possible to use the results of an investigation to file a complaint or charge with the police. It is also possible to use the results of the investigation to realise the company's rights (eg, to claim damages based on tortious behaviour).
Nigeria
Nigeria
- at Bloomfield LP
Investigation findings may be disclosed to the employee and every other person having an interest in the investigation. Where it is discovered that a crime has been committed, the investigation findings may be disclosed to the regulators or police.
Typically, interview records are kept private and will not be disclosed unless it is interest of justice.
26. How long should the outcome of the investigation remain on the employee’s record?
26. How long should the outcome of the investigation remain on the employee’s record?
Japan
Japan
- at Mori Hamada & Matsumoto
Records related to responses to whistleblowing must be kept for an appropriate period, but there is no legal stipulation on the retention period. Each entity is required to set an appropriate period after considering the need for evaluation and inspection, and the handling of individual cases. There is no legally stipulated retention period for other investigation results.
Nigeria
Nigeria
- at Bloomfield LP
The law does not provide for the time the outcome of the investigation may remain on the employee’s record. However, this will depend on the employer’s record-retention policies, which must comply with applicable data protection laws.
27. What legal exposure could the employer face for errors during the investigation?
27. What legal exposure could the employer face for errors during the investigation?
Japan
Japan
- at Mori Hamada & Matsumoto
If the company deviates from appropriate social rules in its investigative methods and means, it will be liable for tortious behaviour. If disciplinary action or dismissal is taken based on erroneous investigation results, the validity of such action or dismissal will be denied, the employee will be able to claim for back wages, and, in some cases, claim for compensation.
Nigeria
Nigeria
- at Bloomfield LP
- Violation of Fundamental Rights of the Employee
- Breach of Contract of Employment or wrongful termination