Anonymity and Data Protection in Employee Surveys in Switzerland: The Most Important Questions Explained

Why do many companies rely on external providers?

Many organizations deliberately choose to have an employee survey conducted by an external firm.

There are several reasons for this.

Employee trust

Employees often perceive an external provider as more impartial than an internal team. They are more likely to believe that their responses will remain confidential when an independent organization conducts the survey.

Protection of anonymity

External providers of employee surveys, such as ValueQuest, ensure that companies receive only aggregated results. This means that results are presented only for groups, and individual responses are not visible.

Methodological expertise

Another advantage lies in the methodological expertise of specialized providers. They assist companies with:

• the development of valid questionnaires

• the technical implementation of the survey

• the statistical analysis of the data

• the interpretation of the results

This increases the likelihood that the survey will not only provide data but will actually lead to improvements within the company.

Is an employer allowed to share employee data with an external provider?

Yes. Under the Swiss Data Protection Act (revDSG) and the European General Data Protection Regulation (GDPR), the disclosure of personal data is permitted if it is necessary to fulfill a legitimate purpose.

In employee surveys, for example, the following information may be provided:

• Team or department

• Functional level

• Age or age group

• Gender

• Length of service

• Contact information for sending the invitation

This data will be used exclusively for the purpose of conducting the employee survey.

As a general rule, separate consent from each individual employee is not required as long as the data processing takes place within the context of the employment relationship and the purpose is clearly communicated.

Is participation in an employee survey voluntary?

Yes. In Switzerland, there is a clear principle: Participation in employee surveys must be voluntary.

Companies are, of course, free to invite employees to participate and remind them to do so. However, they may not require anyone to participate.

Indirect pressure should also be avoided. For example, if participation targets are linked to managers’ performance evaluations, this can be perceived as problematic.

A survey works best when employees participate voluntarily and feel that their feedback is welcome.

How do professional providers of employee surveys handle voluntary participation?

In professional surveys, the principle of voluntariness applies not only to participation as a whole; individual questions can also be skipped. This has several advantages:

• Employees feel respected

• Sensitive questions may be omitted

• Dropout rates are falling

• data quality remains higher

When participants are forced to answer every question, their responses are often ill-considered or random. This can skew the results.

What does “data protection compliant” mean in the context of employee surveys?

Data protection compliance means that every step of the survey is conducted in accordance with applicable data protection laws.

In Switzerland, the following regulations are particularly relevant:

• the Swiss Data Protection Act (DSG)

• the Ordinance on the Data Protection Act (VDSG)

• for international companies, the EU GDPR as well

Many market research firms also adhere to the international standards set by the industry association ESOMAR.

In practice, data protection means, among other things:

Transparent information

At the start of the survey, employees are informed that:

• who is responsible for data processing

• for what purpose the data is collected

• What categories of data are processed

• how long the data is stored

• what rights the participants have

Clear retention periods

Personal data will be deleted as soon as it is no longer needed for the survey.

Anonymity or confidentiality: What's the difference?

Many companies refer to anonymous employee surveys. Technically speaking, however, these are usually confidential employee surveys.

The difference is important.

In a fully anonymous employee survey, there is no link whatsoever between responses and individual employees.

In the case of a confidential survey, technical connections are established during the survey process—for example, to send invitations or track response rates. However, this information is protected and is not shared with the client.

The results are analyzed exclusively at the group level.

Why are individual survey links used?

Many providers send personalized invitation links.

These links serve several important purposes:

• They prevent multiple entries

• They provide response statistics during the field phase

• They make it easier to send reminders

It is important to note that the employer does not receive any information about who participated and who did not.

What does anonymity mean when analyzing an employee survey?

A key principle of professional employee surveys is that neither the client nor third parties have access to individual responses.

The results of the employee survey are analyzed exclusively using statistical methods and presented in aggregated form. This means, for example:

• Results are displayed only for groups

• Individual replies are not visible

• No conclusions may be drawn about specific individuals

Requests for personalized responses are consistently denied.

What is a minimum sample size?

To protect anonymity, results are analyzed only for groups that meet a certain minimum size.

Typically, this threshold is set at a minimum of five participants.

This means:

• Smaller teams will be merged

• Reports are not generated for very small groups

• Retrospective detailed analyses are also being reviewed

This rule prevents individuals from being indirectly identifiable.

How is demographic data handled?

Demographic information helps provide a better understanding of the results of an employee survey. For example, it shows whether different groups within the company have different experiences.

Many companies send this data directly from their HR system to the survey provider.

This has several advantages:

• higher data quality

• shorter questionnaires

• lower dropout rates

At the same time, care is taken to ensure that demographic data is used only in broad categories to prevent the identification of individual persons.

How are open-ended responses protected?

Open-ended fields allow for detailed feedback in employee surveys. At the same time, there is a risk that employees may inadvertently reveal information about their identity. For this reason, open-ended responses are often analyzed only at the organization-wide level. If analyses are conducted at the departmental level, this is clearly communicated in the questionnaire.

Organizations often need to make comments visible at the team level. To achieve this without allowing the wording to reveal the identities of individual team members, the use of artificial intelligence can offer a solution. After first removing all personally identifiable information, professional providers of employee surveys, such as ValueQuest, can generate AI-generated summaries of the open-ended comments from individual teams upon request.

When is personal data deleted?

Personal data may be stored only for as long as is necessary for the purpose of the survey.

Once the project is completed, the following will generally be done:

• Participant lists deleted

• personal data removed

• Links between people and answers have been removed

The anonymized results data, however, can be stored to enable comparisons over several years.

How can companies build trust among their employees?

The most important factor in the success of any employee survey is trust.

Companies can strengthen this trust by communicating transparently:

• how anonymity is protected

• What role does an external provider of employee surveys play?

• how the results are analyzed

• what happens to the results afterward

Involving data protection officers or employee representatives at an early stage can also enhance the credibility of the survey.

When employees understand how their data is protected and see that their feedback is taken seriously, they are more willing to participate and provide honest feedback.