Workplace 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.

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.

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.

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.