Workplace Investigations

Non-disclosure agreements, also known as confidentiality agreements, can be used to maintain the confidentiality of the investigation. In this agreement, the employee will be directed to maintain confidentiality concerning the investigation and matters that are the subject of the investigation, and not speak to anyone outside the investigation team about the investigation without authorisation.

Confidentiality agreements are legal documents. Employees should be informed that a breach of the confidentiality agreement could result in disciplinary action being taken against them, up to and including termination of their employment.  

According to section 6(1) of the DSG, employees who have access to personal data in the course of their professional activities must maintain data confidentiality and continue to do so even after termination of their employment.

Non-disclosure agreements can generally be used to achieve this but are subject to certain restrictions. They may not be used to conceal criminal activity, violate the privacy rights of individuals, circumvent legal disclosure obligations, prevent the exercise of legal rights or contain clauses that violate existing laws, in particular data protection regulations.

In principle this is possible. However, these NDAs do have their limits and cannot prevent involved persons from, for example, bringing a legal claim or filing a report if they are legally entitled to do so. Under whistleblower rules, a reporter can even publish his or her complaint under certain circumstances.

Yes, NDAs may be executed to reinforce the confidentiality obligations outlined in the company's policies and reinforced in interviews.

Yes. In practice, before conducting a compliance investigation, we recommend that the employer and the investigator enter into a confidentiality agreement to require the investigator to keep confidential the facts and the substance of the investigation. This will not only better protect the personal information of the complainant, the witness and the investigated employee, but also help the investigation to proceed smoothly.

Yes, however, the need for an NDA is assessed always on a case-by-case basis.

Most of the time, the legal protection afforded by the legally prescribed confidentiality obligation that applies to whistleblowing is sufficient. This is all the more so given every person involved is bound by an obligation of discretion. However, there is no legal obstacle to the creation of an NDA between the employer and the people involved.

NDAs setting out a strict and reinforced obligation of confidentiality and discretion during the investigation should be signed by any external parties involved (eg, translation agency, IT expert) or when the internal investigation is outside the scope of whistleblowing regulations.

In principle, it is possible to conclude non-disclosure agreements with external consultants of the investigation or with employees involved in the investigation. However, regarding external lawyers, a non-disclosure agreement is not necessary since lawyers are already subject to professional confidentiality. Concerning employees, it is rare in Germany to conclude confidentiality agreements in connection with a workplace investigation.

NDAs are an option, especially to outline in detail the obligations of the persons conducting the investigation, which is also provided for in law. On the other hand, NDAs will not prevent persons involved from providing information to the competent authorities in the context of criminal or other similar procedures, where they must do so by law. Moreover, they may not protect confidentiality if persons who report breaches of Union law decide to make an external or public report, according to the provisions of L. 4990/2022.

In general terms, NDAs can be used and indeed are commonly used to keep the fact and substance of a workplace investigation confidential. However, NDAs will not be effective in preventing the disclosure of information which is in the public interest or is important for safeguarding public welfare in matters of health and safety. Further, several laws in Hong Kong provide that disclosures as a result of compliance with a requirement made by the relevant authorities will not be treated as a breach of any restriction imposed by contract or otherwise by law.[1]

Yes. While it is common for employees to be bound by general confidentiality obligations at the beginning of employment, it is advisable to reiterate such confidentiality obligations through NDAs during an investigation.

There is no legislation regarding NDAs, but there is a Bill before the legislature proposing to “restrict the use of non-disclosure agreements as they relate to incidents of workplace sexual harassment and discrimination”. It is currently at the report stage. Whether it passes remains to be seen, but there has in recent times been strong criticism of the use of NDAs to cover up matters that ought to be fully investigated and dealt with in an organisation.

Settlement agreements, however they arise, may include confidentiality clauses which may, depending on the terms of the agreement, extend to the fact and substance of an investigation, but as in the UK an employee's right to make a protected disclosure or report a criminal offence cannot be waived by signing an NDA.

Yes, in principle, NDAs can be used to keep the fact and substance of an investigation confidential, even if it is not strictly necessary (and not often done in our experience).

It is possible to use NDAs in investigations.

Yes, NDAs can be used for this purpose. However, employers in the Netherlands often rely on general confidentiality obligations that the relevant employee already has to adhere to vis-à-vis their employer, for example in the employment agreement or collective labour agreement, if applicable. It is good practice to reiterate the confidential nature of any interview and its contents, and the existence of the investigation as such, to avoid any alleged confusion as to the confidential nature of investigative procedures later on.

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.

The practice of stipulating matters to ensure adherence to confidentiality is not uncommon. As such, NDAs are executed as a means of added protection for both the company and the employees involved.

Yes, but it may not stop the disclosure of information at the request of relevant law enforcement authorities.

Please see question 12 above. NDAs are not admissible.

Yes, NDAs can be used to keep the fact and substance of an investigation confidential. There are no express prohibitions against such NDAs under Singapore law. However, information or evidence covered by the NDA may still be discoverable in court or arbitration proceedings; and may also be subject to disclosure requests or directions by the police or statutory authorities, including the MOM.   

Some companies require an employee subject to investigation to sign an NDA or other similar documents (eg, a pledge of confidentiality) agreeing not to disclose information relating to the investigation to outside parties.

Yes. NDAs are the preferred instrument to ensure that employees conducting the investigation, as well as those who participate as witnesses or collaborators, will keep the enquiry and its existence confidential.

NDAs can be used for some investigations carried out in the private sector. However, under the Swedish Whistleblowing Act, a contract is void to the extent it retracts or restricts a person’s rights under the Swedish Whistleblowing Act. An NDA that restricts the right to report irregularities to authorities or the media would, therefore, typically be void.

In addition to the above-mentioned statutory confidentiality obligations, separate non-disclosure agreements can be signed. In an internal investigation, the employee should be expressly instructed to maintain confidentiality.

Non-disclosure agreements can be made between an employer and employees who are involved in an investigation. This may include investigators and witnesses, apart from the employee under investigation. This minimises the risk of information being leaked, which can affect all parties related to the workplace investigation. However, an NDA is not absolute means to prevent the disclosure of confidential information, as the court has the authority to compel disclosure.

It is crucial to keep the events and facts of a workplace investigation confidential for the integrity of the process. It may be necessary to consider appropriate confidentiality measures to protect the complainant, mitigate risks, and preserve evidence. Damage to the confidentiality of the case can prevent the investigation team from bringing the case to a correct and complete conclusion. Although the labour legislation imposes a general confidentiality obligation on employees, NDAs can still be used as supplementary documents that may emphasise the confidentiality obligations of employees in workplace investigations and provide additional contractual protections such as penalties if there is a breach.

Only to a limited extent. As a matter of law, NDAs cannot prevent a worker from making a protected disclosure, or reporting a crime to the police. As a matter of the regulatory obligations of solicitors, NDAs should not be used in other ways, including as a means of influencing the content of disclosures, or by using warranties, indemnities and clawback clauses in a way that is designed to, or has the effect of, improperly preventing or inhibiting permitted reporting or disclosures (see the SRA’s warning notice on the use of NDAs).

This is a fact-specific inquiry that depends on the specific circumstances and laws of the relevant state. In general, NDAs are frowned upon but can be used to an extent to keep certain facts and the substance of an investigation confidential. NDAs can never prevent employees from assisting in official agency investigations, however. NDAs also cannot lawfully prohibit employees from officially reporting illegal conduct by their employer.

Generally, NDAs can be used to keep the facts and substance of a workplace investigation confidential. There are no express prohibitions against such NDAs. However, there are cases set out under Decree No. 13/2023/ND-CP on personal data protection where personal data is allowed or required to be disclosed without the data subject’s consent, in instances that are necessary to serve the public interest or to protect the life and health of the data subject.

A trade union does not have any right to be informed of, or involved in, an investigation by an employer. However, an employee may request that their support person is a trade union member or trade union representative. This is appropriate and should be permitted.

Employers should review the terms of an employment contract, policy or industrial instrument as this may contain terms regarding trade union involvement. In particular, heavily-unionised workplaces may contain enterprise agreements which contain relevant clauses.

The Austrian Labour Constitution Act (ArbVG) does not contain any provisions regarding workplace investigations. The employee has the right to address the works council but is not entitled to have the works council comply with his or her request.

The works council's opportunities for participation are conclusively regulated. Certain investigative or control measures may require the consent or co-determination of the works council.

Under section 96(1)3 ArbVG, the consent of the works council is required if the employer wishes to introduce and maintain control measures or technical systems for monitoring employees that affect human dignity, such as video surveillance or specific staff questionnaires. If there is no works council, the consent of each individual employee is required.

At the request of the involved employee, an employee can be assisted by a member of the trade union delegation, for example, during his or her hearing.

The works council should be informed of an investigation if there is a considerable impact on the company; this will only be the case if the investigation concerns a very serious, important or widespread issue. This information should be communicated as soon as possible and before measures are taken as a result of the investigation. This is only a right to information, not consultation. Moreover, members of the works council may be asked to respect their duty of confidentiality. However, as the enforcement of this duty of confidentiality is difficult, the timing of the information should be chosen wisely so it does not jeopardise the investigation.

No, there is no such right.

The relevant laws and regulations in the PRC have not expressly provided the employer’s obligation to inform the trade union of the internal investigation or the right of the trade union to participate in the employer's internal investigation. In practice, given the confidential nature of internal investigation, the employer usually does not voluntarily inform the trade union of such information. However, in accordance with Article 25 of the Measures for the Supervision of Labor Law by Trade Unions of the PRC, the trade union shall have the right to conduct an investigation if the employer has violated the labor laws and regulations or infringed the legitimate rights and interests of the employee. Therefore, it is still possible that the employer, in the course of the internal investigation, may be investigated by the trade union if it has violated the labor laws and regulations or infringed the legitimate rights and interests of the employee (e.g. being suspected of infringing personal information or privacy).

In addition, if the employer determines that the employee has committed a serious disciplinary offence based on the result of the internal investigation and thus decides to terminate the employment contract unilaterally, it shall notify the trade union of the reasons for termination in advance. If the employer has violated the laws, administrative regulations or the provisions of the employment contract, the trade union is entitled to request the employer to make corrections.

A works council or a trade union does not have a role in the investigation.

Neither the works council nor the trade unions have any right to be informed or involved in the investigation. It is the employer who is responsible for carrying out the investigation. However, when the investigation is triggered due to a works council issuing an alert relating in particular to a “serious and imminent danger”, one member of the works council must be involved in the investigation process.

The works council does not have a general right of co-determination on whether and in what way a workplace investigation is carried out. However, workplace investigations may trigger co-determination rights of the works council in specific cases, as outlined below. If co-determination rights come into consideration, the employer must inform the works council about the investigation to put the works council in a position to assess whether or not co-determination rights are affected.

In connection with workplace investigations, the works council may have a co-determination right in the following cases:

• If e-mail accounts and data are screened by using technical devices that are suitable to monitor the behaviour or performance of employees (section 87 paragraph 1 no. 6, BetrVG).
• If, for example, the employer instructs all or a large group of employees to participate in interviews, the co-determination right of the works council regarding the rules of operation of the establishment and the conduct of employees in the establishment (section 87 paragraph 1 no. 1, BetrVG) may be affected.
• If standardised questionnaires are used in employee interviews, provided they are used for a large group of interviewed employees (section 94, BetrVG).

If co-determination rights exist in the specific case, the works council has the right to co-determine the type and structure of the specific investigative measures used (ie, the relevant investigative measure cannot be carried out without the works council's consent). To avoid any conflicts, the employer should set up, together with the works council, general rules about workplace investigations well ahead of any investigation.

Trade unions have no right of co-determination in workplace investigations.

L.4990/2022 explicitly states that the exercise of employee rights that refer to consulting from representatives or trade unions and protection against any detrimental measure that results from those consultations does not affect the implementation of any legal provisions. The autonomy of social partners and their right to enter into collective agreements regardless of the level of protection provided by L.4990/2022[7] is also unaffected.

Under L.4808/2021, legal persons and associations of persons, including trade unions, that have a legitimate interest in doing so may, with the consent of the complainant, bring an action in the complainant’s name before the competent administrative or judicial authorities. They may also intervene in their defence[8].

Unless the employment contract or the relevant internal policies specify otherwise, there is no automatic right under Hong Kong law for a works council or trade union to be informed or involved in a workplace investigation.

No.

There is no specific requirement to constitute a works council for most industries or inform the trade union about an investigation or disciplinary inquiry.

It is common, however, for individuals to share details of the matter with trade union representatives and seek their support. Further, if an employee has the right to be represented or supported by a colleague (for example, if the establishment is covered by the SO Act), the individual may request trade union representatives to support them during inquiry proceedings.

This will depend on the agreement with the works council or trade union. The employee who is the respondent to the investigation may have views on their trade union being informed, aside from any agreement, which should be taken into account under GDPR provisions.

Generally speaking, a workplace investigation does not require the involvement of a trade union (on the assumption that no specific union agreement has been reached at a company level to entitle trade unions to specific forms of consultation or involvement in workplace investigations, which is not common).

According to section 4 of the Workers’ Statute, as stated above, the involvement of the trade union is necessary regarding the installation and use of specific equipment (such as cameras, switchboards, software) that potentially allows the employer to remotely monitor working activity, and which can be done only with prior agreement of the unions (or authorised by the labour inspectorate).  The union agreement must be made before the installation of the system, and therefore would normally be already in place when an investigation starts.

Pursuant to the WB Decree (Art. 4), union representatives (or external unions) should be “heard” before the employer activates a WB reporting channel[1].

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.

There is, in principle, no role for the works council in an "isolated or single" internal investigation. When it comes to structural forms of employee monitoring to measure behaviour (such as video surveillance), the proposed decision to implement such a monitoring system in principle requires the prior approval of the works council.

In addition, according to the Act on the Protection of Whistleblowers,  an employer who is not obliged to set up a works council needs the consent of more than half of the employees when adopting the internal reporting procedure under theAct, unless the substance of the procedure has already been laid down in a collective bargaining agreement.

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.

Except if provided expressly under a collective bargaining agreement, the union does not have the right to be involved in the investigation. Given that the investigation is between the employee and the company, it follows that the union does not have any right to participate in the investigation proceedings.

There is no such obligation, unless it is provided for in an internal procedure or, for example, in the applicable collective bargaining agreement. It is neither a recognised practice nor recommended that such persons participate in the investigation.

However, in the event of violations that justify the termination of an employment contract with the employee, the employer should consult with that employee’s union about their intention to immediately terminate any employment contract concluded with that person or to terminate, with notice, the employment contract agreed with him or her for an indefinite term, or apply for consent to terminate the employment contract with an employee who is protected by a union.

Employee representative bodies are not entitled to be informed about or to participate in the preliminary investigation. The works council is only entitled to participate in disciplinary proceedings after a formal accusation has been made against the employee.

A copy of the accusation should be sent to the works council (if any) and if the employee is a trade union member, to the respective trade union. After the instruction phase of the procedure has ended (where the employer has to hear the witnesses identified by the employee in his written defence and file any other sources of information that have been requested), the employer should provide a copy of the disciplinary procedure to the works council (if any) and the respective trade union, if the employee is a member. These employees’ representatives will then have five business days to issue their opinion on the matter.

Finally, a copy of the final decision must also be sent to these bodies.

There is no legal right for the interviewee to be assisted by a representative from the works council.

An employee who is a member of a works council or trade union has the right to seek assistance from the works council or trade union representative (whichever is applicable) and have the works council or trade union involved in resolving the grievances.

For unionised companies, the grievance procedure and the role of the union representative are usually set out in the collective agreement entered into between the company and the works council or trade union. In some organisations, the employee handbook or grievance policy will also state when the trade union representative will be involved in the investigation process.

While a labour union does not have a legal right under Korean law to be informed or involved in the investigation, unless otherwise required under the relevant collective bargaining agreement, there have been instances where the labour union raised complaints that the company did not properly investigate an employee, who is a member of the labour union, particularly if the company took disciplinary action against that employee based on the findings of the investigation. The company should consider such a practical risk when conducting a workplace investigation.

If the investigation was conducted based on a claim filed by an employee to the Grievance Handling Committee (which is a sub-committee of a works council), the members of that committee have a right to be informed of the results of the investigation.

As explained in question 15, employees are not entitled to representation during an investigation. However, if a disciplinary procedure starts as a result of the investigation, employee representatives may be entitled to be informed of the disciplinary procedure and its outcome.

The degree and timing of when employee representatives must be involved will depend on several factors such as:

• the employee’s affiliation to a union;
• if the employee is an employee representative;
• the seriousness of the potential sanction to be imposed; and
• the information rights that the applicable collective bargaining agreement acknowledges regarding employee representatives.

No, but if the employee under investigation is unionised it is appropriate to inform the union about the investigation. If the employer chooses to take action against the employee during, or after, the investigation, the trade union generally needs to be consulted before any final decisions are made.

If the Swedish Whistleblowing Act applies, the employer is not authorised to inform a works council or trade union about the investigation, as it may be in violation of the duty of confidentiality (see question 10).

In general, works councils and trade unions are not very common in Switzerland and there are no statutory rules that would provide a works council or trade union a right to be informed or involved in an ongoing internal investigation. However, respective obligations might be foreseen in an applicable collective bargaining agreement, internal regulations or similar.

Thai labor laws do not require a workplace investigation to involve participation from trade unions or labour unions. However, it is possible for labour unions established under the Labor Relation Act BE. 2518 (1975) to submit a demand for a collective bargaining agreement (CBA) with employers to get a seat at the table. There was a case where a management union made a CBA with the employer wherein the president of the management union would be involved in any investigation of any manager, who is a union member, under investigation. In that case, the employer must comply with the CBA by informing the president and allowing the president to participate in the investigations.

An authorized trade union, if any, may have the right to be informed or involved in the investigation, depending on the terms of the collective bargaining agreement in place. Even in the absence of such a provision in the collective bargaining agreement, it would still be recommended to inform the trade union of the investigation as a courtesy. We do not have works councils under Turkish employment law.

Aside from the statutory right to be accompanied (see question 15), any further involvement by the works council or trade union would depend on the terms of the relevant works council or trade union recognition agreement.

Employers generally have no obligation to inform employees of their right to union representation or to ask if they would like a union representative present during the interview. Union employees may insist, however, that a union representative attend any investigatory interview that could lead to the employee’s punishment, although the union representative may not interfere with the interview.

In Vietnam, the “trade union” is the only organisation solely dedicated to protecting employees’ legitimate rights and interests. Under the 2012 Labor Code, the term referring to trade unions was changed to “grassroots-level representative organisation of employees”. But the essence of this organisation remained and was later defined as “the executive committee of a grassroots trade union or the executive committee of the immediate upper-level trade union in a non-unionised company”. As such, it could be said that it was old wine in a new bottle.

As required under article 70.1 of Decree No. 145/2020/ND-CP, which serves as a guide to the Labor Code on working conditions and labour relations, when suspecting that an employee has committed a violation of labour discipline, the employer has to make a record of the violation at the time and notify the grassroots-level representative organisation of employees of which the employee is a member, or the legal representative of the employee if they are under 15 years of age. If the employer detects a violation after it has occurred, it will collect evidence to prove it. In this instance, the employer has no obligation to inform or involve the trade union or grassroots-level representative organisation of employees during the workplace investigation stage.

Also, an employee who is a member of the trade union or organisation has the right to seek assistance from this organisation and may authorise the trade union’s representative to represent and get involved in the workplace investigation.