Workplace Investigations

The General Data Protection Regulation and the Spanish Data Protection Law apply when gathering any type of evidence, including physical evidence. This means that companies may only process personal data when they have lawful grounds to do so and within the limits set forth for special categories of personal data (health, union affiliation, criminal records, etc.).

The Spanish Statute of Workers specifically states that employees and their possessions may be registered when it is necessary to protect the companies’ property (or the property of other co-workers). This registration must:

• be conducted in the workplace and during working hours;
• respect the employee’s privacy and dignity; and
• be performed in front of an employee representative or, if not possible, in the presence of another employee of the company.

The Swiss Federal Act on Data Protection applies to the gathering of evidence, in particular such collection must be lawful, transparent, reasonable and in good faith, and data security must be preserved.[1]

It can be derived from the duty to disclose and hand over benefits received and work produced (article 321b, Swiss Code of Obligations) as they belong to the employer.[2] The employer is, therefore, generally entitled to collect and process data connected with the end product of any work completely by an employee and associated with their business. However, it is prohibited by the Swiss Criminal Code to open a sealed document or consignment to gain knowledge of its contents without being authorised to do so (article 179 et seq, Swiss Criminal Code). Anyone who disseminates or makes use of information of which he or she has obtained knowledge by opening a sealed document or mailing not intended for him or her may become criminally liable (article 179 paragraph 1, Swiss Criminal Code).

It is advisable to state in internal regulations that the workplace might be searched as part of an internal investigation and in compliance with all applicable data protection rules if this is necessary as part of the investigation.

Directive (EU) 2019/1937 of the European Parliament and of the Council, of 23 October 2019, on the protection of persons who report breaches of Union law, has been implemented in Spain through Law 2/2023 (Ley 2/2023, de 20 de febrero, reguladora de la protección de las personas que informen sobre infracciones normativas y de lucha contra la corrupción). This law limits the capacity of companies to retaliate or to take any action against employees who report workplace violations or breaches of the law. Any action taken against an employee in such a position would be considered null and void if challenged in court.

Spanish law allows anonymous reports to protect whistleblowers from retaliation.

If an employee complains to his or her superiors about grievances or misconduct in the workplace and is subsequently dismissed, this may constitute an unlawful termination (article 336, Swiss Code of Obligations). However, the prerequisite for this is that the employee behaves in good faith, which is not the case if he or she is (partly) responsible for the grievance.

The issue with revealing unrelated matters to the investigation is that it may jeopardise the entire enquiry. If the unrelated matters are private or the disclosure is construed as a breach of employees’ fundamental rights, then the materials gathered during the investigation could be considered to be unlawfully obtained and would not be admitted as evidence in court.

Moreover, the employee could seek damages and a fine could be imposed on the company for breaching its employee’s rights.

Finally, if unrelated matters are revealed, it could be a clear sign that the company has failed to conduct a diligent investigation and use the least intrusive means available to it (see question 1). One of the reasons to minimise the number of employees conducting the investigation (see question 4) is to reduce damages if matters unrelated to the investigation are revealed.

There are no regulations in this regard in the Swiss employment law framework. However, in criminal proceedings, the rules regarding accidental findings apply (eg, article 243, Swiss Criminal Procedure Code for searches and examinations or article 278, Swiss Criminal Procedure Code for surveillance of post and telecommunications). In principle, accidental findings are usable, with the caveat of general prohibitions on the use of evidence.