May an employer fire or reject you because of your social media? The line between privacy and employment law

Online statements on platforms such as Facebook or LinkedIn are increasingly leading to labor disputes. The short answer to the question of whether your social media affects your job is yes: an employer may screen your public profiles for job applications under strict conditions and even sanction you for inappropriate posts. However, everything revolves around the delicate balance between your right to privacy and free speech on the one hand, and your duty of loyalty to the company on the other hand.

The risks of online communication

Social media are an integral part of personal and professional life today. The line between private and professional actions is rapidly blurring. Employees and candidates share a variety of work-related information online, from job postings to opinions about their work environment.

Because online messages are typically public, persistent and easily shareable, they can also harm a company's interests, reputation or proper operations outside of work hours. As a result, both employers and employees face complex questions of privacy and employer's rights at all stages of the employment relationship.

The regulations surrounding social media

Legislation and case law in Belgium approach the use of social media in three distinct phases of the employment relationship:

Phase 1: The application and pre-contract screening process.

• Belgian law contains no specific regulation for social media screening in recruitment, so one falls back on general labor and data protection law.
• According to collective bargaining agreement no. 38 the employer may only make inquiries relevant to the nature and conditions of performance of the job. Questions about private life are in principle not permitted.
• The mere publicly accessible nature of information on social media is not sufficient to justify its collection under the General Data Protection Regulation (GDPR). The employer must usually invoke a ‘legitimate interest,’ which requires careful balancing of interests. Consent of the applicant is rarely an appropriate legal ground in practice due to the dependent position, although the Data Protection Authority considers a priori exclusions to be incompatible with the GDPR.
• The processing of special categories of personal data (revealing political beliefs, religious views or health) is prohibited in principle and permitted only exceptionally with a strict legal basis.
• An employer should never force access to locked profiles or pressure an applicant to accept connection requests.

Stage 2: During the execution of the employment contract

• The employer may regulate, restrict or prohibit the use of social media during work hours based on its authority, as long as it is proportionate and clearly communicated. This prohibition does not apply during rest breaks.
• Control of electronic communications is governed by collective bargaining agreement no. 81. Checks are in principle carried out in a global and anonymous manner. Only when irregularities are found can the employer proceed to further individualize the data.
• The right of deconnection (collective bargaining agreement dated February 21, 2023) ensures that employees in companies with 20 or more employees are not required to be reachable or responsive to digital communications outside working hours. Employers must make arrangements for this in a collective bargaining agreement or the work regulations, including practical guidelines (such as turning off servers, use of absence messages or e-mail signatures) and training and awareness-raising measures. Employees should not be disadvantaged by their choice to be unreachable.
• Cross-border behavior in private online conversations between co-workers may not be actively monitored by the employer. Evidence through unauthorized viewing of private messages is generally considered unlawful. However, when an employee voluntarily surrenders messages to the employer for transgressive behavior, evidence is generally considered lawful

Stage 3: End of employment contract and former employees

• Statements on social media can constitute an urgent reason for dismissal. For example, in 2022, the Labor Court of Liege (Namur Division) ruled that photos and comments in a “private” Facebook group with a large, diversified membership could justify an urgent reason because the employee could not invoke a strictly private context. Similarly, the Labor Court Brussel ruled in 2025 that controversial statements on social media could potentially warrant dismissal.
• Former employees must refrain from online conduct that unnecessarily harms their former employer. In 2024, the Hasselt labor court ordered a former employee to pay €500 in damages for publishing a heavily offensive and misleading Google review about her former employer (an indoor playground).

Legal analysis and interpretation

From a legal perspective, social media does not constitute a vacuum. Caselaw invariably test conflicts by balancing interests between Article 8 ECHR (right to respect for private life), Article 10 ECHR (freedom of expression) and the employee's duty of loyalty enshrined in the Employment Contracts Act.

An important concept within the balancing of interests by courts is the reasonable expectation of privacy. The more a person brings their own private life into the public sphere (for example, through public profiles or a wide circle of friends), the more limited the protection of private life weighed against the employer's interest. Thus, the label “private” does not automatically equate to legal confidentiality.

Within the employment relationship, freedom of expression is limited by the relationship of subordination and the duty of loyalty. In assessing whether online utterances are reprehensible, courts apply several criteria specifically:

1. Degree of disclosure: The platform used and privacy settings.
2. Employee position: Greater discretion and loyalty are expected of employees in leadership or communications roles.
3. Nature of criticism: Permitted constructive criticism versus offensive, defamatory or discriminatory statements.
4. Type of business and social climate: Organizations with a public role (such as a municipal government) may require a heightened duty of loyalty, and structural tensions in the company also factor into the assessment of the proportionality of a sanction.

A particular concern is communications between employees. Private conversations enjoy protection, so in principle the employer may not actively monitor them. However, when an employee himself transmits cross-border messages from a colleague to the employer, this evidence is generally considered lawful. Even illegally obtained evidence is admitted by labor courts in exceptional circumstances based on the so-called Antigone doctrine. Under this doctrine, illegally obtained evidence is excluded by courts only if the illegality affects the reliability of the evidence, its use is declared void by law, or the right to a fair trial is violated. (see also our earlier blog on secretly recording conversations at work).

What this means in practice

These complex regulations translate into very specific strategic advice:

• For the employer: You must structurally anchor your policies. Provide a clear social media policy on what is and is not permitted during and after working hours. Do you wish to screen candidates? Limit this strictly to job-relevant data and stay absolutely away from health data or political affiliations, under penalty of GDPR violations. If you have more than twenty employees, since April 2023 you are obliged to elaborate on the right to deconnect, for example by sensitizing managers or technically restricting e-mail traffic.
• For the employee: The illusion of the ‘closed group’ has been punctured. Your duty of loyalty does not stop after hours or immediately after your dismissal. Slanderous statements about the employer or harassment via WhatsApp towards colleagues can lead to a valid dismissal for urgent reasons. On the other hand, you do have the full right to ignore your work phone or emails on weekends or during your vacation, without ever being allowed to use it against you.

Frequently asked questions (FAQ)

Can I be fired for a message in a private WhatsApp or Facebook group?
Yes, that is possible. Case law states that private communications can have employment law consequences if the scope is actually broad, the content is highly offensive or discriminatory, or if it affects the company's reputation.

May my employer conduct targeted searches of my political affiliation or health through my public social media?
No. While screening with a legitimate interest is sometimes allowed, the processing of special categories of personal data (such as religion, politics and health) is prohibited in principle, even if they are publicly available online.

Can my employer check my cell phone or read my private messages?
No, private online conversations fall under your right to privacy (Article 8 ECHR), and employers may not actively interfere. However, if a colleague who feels offended voluntarily delivers your messages to the employer, this may often be used as evidence.

Am I required to reply to work-related messages after my hours?
No. Thanks to the right of deconnection (in companies with 20 employees or more), you are not required to respond to digital communications from your employer or colleagues outside your normal working hours, except in exceptional emergencies.