Workplace Investigations

If the report and the whistleblower fall within the scope of the Whistleblowing Directive, his or her identity must be protected. From a data protection perspective, the principles of the DSG must be observed to protect the legitimate confidentiality of the individuals concerned.

Furthermore, the employer should ensure that information is only disclosed to trustworthy persons to avoid pre-judgements.

Besides the employee's duty of performance (article 319, Swiss Code of Obligations), the employment relationship is defined by the employer's duty of care (article 328, Swiss Code of Obligations) and the employee's duty of loyalty (article 321a, Swiss Code of Obligations). Ancillary duties can be derived from the two duties, which are of importance for the confidentiality of an internal investigation.[1]

In principle, the employer must respect and protect the personality (including confidentiality and privacy) and integrity of the employee (article 328 paragraph 1, Swiss Code of Obligations) and take appropriate measures to protect the employee. Because of the danger of pre-judgment or damage to reputation as well as other adverse consequences, the employer must conduct an internal investigation discreetly and objectively. The limits of the duty of care are found in the legitimate self-interest of the employer.[2]

In return for the employer's duty of care, employees must comply with their duty of loyalty and safeguard the employer's legitimate interests. In connection with an internal investigation, employees must therefore keep the conduct of an investigation confidential. Additionally, employees must keep confidential and not disclose to any third party any facts that they have acquired in the course of the employment relationship, and which are neither obvious nor publicly accessible.[3]

As a general practice, workplace investigations need to be kept confidential for the integrity of the process. In some cases, employees can specifically request their identity or involvement be kept confidential. In such cases, additional measures need to be taken to protect confidentiality. In any case, obligations and rights arising from the DPL and Labour Law must be respected and complied with by the employer and the investigation team.

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 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.

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.