How to Bring an Employment Claim in Belgium, Step‑by‑step Guide for Employees (2026)

If you have been dismissed, disciplined, or denied wages in Belgium, understanding how to bring an employment claim in Belgium is the essential first step toward protecting your rights. The employment claim process in Belgium follows a defined sequence, from gathering evidence and requesting written reasons, through pre‑action negotiation, to filing proceedings at the labour court and, ultimately, obtaining a judgment or settlement. This guide sets out each stage in practical detail, including the documents you need, the deadlines that apply, and the costs to anticipate. It also addresses the June 2026 labour reforms that have materially changed notice‑pay calculations and the compensation for unfair dismissal available to employees.

Overview of the Employment Claim Process in Belgium and Who It Applies To

Belgium does not have a single consolidated employment code. Instead, claims are governed by a network of statutes, most importantly the Employment Contracts Act of 3 July 1978, the Collective Bargaining Agreement (CBA) No. 109 on manifestly unreasonable dismissal, and various anti‑discrimination laws. Disputes between employees and employers are heard by the specialised labour courts (arbeidsrechtbank / tribunal du travail), which sit in each judicial district.

The typical claim pathway runs as follows: confirm eligibility → secure evidence → request written reasons for dismissal → attempt negotiation or conciliation → file the claim at the competent labour court → exchange written submissions → attend a hearing → receive judgment. Reinstatement is rarely ordered in practice; the primary remedies are notice pay (or compensation in lieu of notice) and damages.

Claims may be brought by current or former employees, and in some circumstances by third parties such as works‑council members or trade‑union delegates. Employees in specially protected categories, including pregnant workers, employees on parental leave, and union representatives, benefit from additional procedural protections and enhanced compensation if dismissed unlawfully. The 2026 labour reforms have altered several of the calculation methods underpinning these remedies, making it important to verify which rules apply to your specific situation.

Eligibility and Prerequisites for Bringing an Employment Claim in Belgium

Before initiating proceedings, you should confirm that you meet the basic prerequisites and that the labour court is the correct forum for your dispute.

Who may bring a claim. Any person who is or was employed under a Belgian employment contract may file a claim. Foreign nationals working in Belgium under a Belgian‑law contract have the same right of access to the labour courts. Certain third parties, for example, a trade union acting on behalf of a member, may also bring proceedings in defined circumstances.

Types of claims covered. The procedure described in this guide applies to claims for unfair dismissal (including manifestly unreasonable dismissal under CBA No. 109), wrongful dismissal for serious cause, unpaid wages or benefits, breach of contract, discrimination, harassment, and constructive dismissal. It also covers challenges to disciplinary sanctions where these are governed by work rules or a sectoral CBA.

Essential prerequisite checks. You will need proof that an employment relationship existed, typically your signed employment contract and pay slips. You should also confirm the exact date your employment ended, secure your C4 form (the employer‑issued certificate of termination), and verify whether you are entitled to trade‑union representation. If your employer has not provided a C4, that itself may form part of your claim.

Step‑by‑Step Procedure to Bring an Employment Claim in Belgium

The following numbered steps describe the unfair dismissal procedure in Belgium from the employee’s perspective. Timelines are typical estimates and vary by judicial district and case complexity.

Step 1: Gather Evidence and Secure All Relevant Documents

Act immediately. Before your access to workplace systems is revoked, export and save copies of your employment contract, all pay slips (at least the last 12 months), your termination letter or registered notice, the C4 form, work rules, internal HR correspondence, and any emails or messages relevant to your dismissal. Print and date‑stamp electronic records. If you had overtime or night‑work arrangements, secure your timesheets, these are especially important given the 2026 overtime rule changes. Store copies in a location outside the employer’s control.

Step 2: Request Written Reasons for Your Dismissal

Under CBA No. 109, an employee dismissed without clear communication of the reasons has the right to request a written explanation from the employer. This request must be made by registered letter. The employer is then required to respond within two months of receiving the request. If the employer fails to respond, the employee is entitled to a flat‑rate civil fine equivalent to two weeks’ remuneration. The written reasons, or the employer’s failure to provide them, are critical evidence for establishing whether the dismissal was manifestly unreasonable.

Step 3: Negotiate, Seek Conciliation, or Contact Your Union

Many employment disputes in Belgium are resolved before court proceedings begin. If you are a member of one of the main trade unions (ACV/CSC, ABVV/FGTB, or ACLVB/CGSLB), contact your representative promptly, unions provide legal advice and often negotiate directly with the employer on the employee’s behalf. Mediation is also available through accredited mediators or through the court’s own conciliation procedures. A pre‑action settlement avoids the cost and duration of litigation and can sometimes secure better net outcomes for the employee. If negotiation fails or the employer refuses to engage, the next step is to file formally.

Step 4: Prepare the Claim Bundle and File at the Labour Court

Employment claims are filed at the labour court (arbeidsrechtbank / tribunal du travail) of the judicial district where the employee habitually worked or where the employer’s registered office is located. Proceedings are typically initiated by way of a citation (a writ served by a bailiff) or, in many cases, by a voluntary appearance (vrijwillige verschijning / comparution volontaire). Your claim document should set out the facts, the legal basis for the claim, the remedies sought, and the supporting evidence. The administrative filing fee at the labour court is typically low, in many districts it is nominal or waived entirely for employees, but verify the current amount with the relevant court registry.

Engaging a lawyer at this stage is strongly recommended for all but the simplest wage claims.

Jurisdiction note. Belgium’s labour courts operate in French, Dutch, or German, depending on the region. In Brussels, proceedings may be conducted in either French or Dutch. Ensure all key documents are in the language of the proceedings or accompanied by certified translations.

Step 5: Exchange of Written Submissions and Evidence

Once the claim is registered, the court sets a procedural calendar for the exchange of written conclusions (besluiten / conclusions). Each party submits its legal arguments and supporting documents within the time limits set by the court. The employee (or their lawyer) prepares a detailed evidence file, including the documents listed in the table below, witness statements, and calculation spreadsheets for damages. The employer responds with its own conclusions and evidence. This exchange phase typically takes 4 to 12 weeks, though complex cases or heavily burdened courts may require longer.

Step 6: Hearing, Judgment, Enforcement, and Appeals

The labour court hears the case, usually in a single hearing day, though multi‑day hearings are scheduled for complex matters. The bench typically comprises a professional judge and two lay judges (one nominated by employer organisations and one by employee organisations). After hearing oral arguments and reviewing the written file, the court delivers its judgment, usually within weeks, though delays are common.

Remedies available. The primary compensation for unfair dismissal under CBA No. 109 is damages of between 3 and 17 weeks’ remuneration, depending on the degree of manifest unreasonableness. Where the employer has dismissed an employee in breach of statutory notice requirements, the employee is entitled to notice compensation equal to the remuneration that would have been earned during the notice period. Employees in protected categories may claim enhanced damages, often equivalent to six months’ remuneration on top of the normal notice entitlement. Reinstatement orders are possible but are rarely granted outside the context of protected‑category dismissals.

Either party may appeal the judgment to the labour court of appeal (arbeidshof / cour du travail) within the time limits specified in the judgment notification, typically one month from service.

Documents Needed for an Employment Claim in Belgium

Assembling a complete evidence file at the outset significantly strengthens your position. The table below lists the documents needed for an employment claim, distinguishing between essential items and those that are helpful to include.

Translation requirements. All documents filed with the labour court must be in the language of the proceedings (French, Dutch, or German, depending on the region). If key evidence, such as an employment contract drafted in English, is not in the court language, a certified sworn translation must be provided. Translation costs should be factored into the overall budget for the claim.

Timeline and Key Deadlines for Employment Claims in Belgium

The time limit to sue your employer is the single most critical deadline. Missing it usually results in the permanent loss of your right to a judicial remedy.

Ordinary limitation period for dismissal claims. An employee should bring any claim before the labour court within a maximum of one year from the date of termination of the employment contract. This one‑year limit applies to the most common dismissal‑related claims, including claims for notice compensation and damages under CBA No. 109.

Request for written reasons. If you intend to request the reasons for your dismissal under CBA No. 109, the request must be sent by registered letter within a defined period. The employer then has two months from receipt to respond. Failing to make this request promptly does not bar your claim, but the employer’s written response (or failure to respond) is an important element of the evidence file.

Wage claims. Claims for unpaid wages, holiday pay, or other contractual sums are subject to a one‑year prescription period running from the end of the employment contract, in line with Article 15 of the Employment Contracts Act. Certain social‑security contribution disputes may follow different prescriptive periods.

Discrimination and harassment claims. Claims based on anti‑discrimination legislation may have different limitation periods depending on the specific statute invoked. Early legal advice is essential to confirm the applicable deadline.

Appeals. An appeal against a labour court judgment must generally be lodged within one month of service of the judgment. This is a strict deadline with very limited scope for extension.

Regional language and court‑selection rules. In bilingual Brussels, the employee may choose whether proceedings are conducted in French or Dutch. In Wallonia, proceedings are in French; in Flanders, in Dutch; and in the German‑speaking community, in German. Filing in the wrong language can cause procedural delays.

Costs to File a Labour Claim in Belgium

One of the advantages of the Belgian labour court system for employees is that access costs are deliberately kept low. The table below summarises the main costs to file a labour claim and pursue it through to judgment.

Tax treatment of awards. The tax treatment of compensation received following a labour dispute depends on the nature of the payment. Compensation in lieu of notice is generally subject to income tax and social‑security contributions. Damages for moral prejudice or manifestly unreasonable dismissal may benefit from more favourable tax treatment, but the precise regime depends on the characterisation of the award. Specialist tax advice is recommended before accepting any settlement offer.

2026 Labour Law Changes Affecting Employment Claims in Belgium

The June 2026 labour reforms represent the most significant set of changes to Belgian employment law in recent years. For employees considering how to bring an employment claim in Belgium, the reforms directly affect the remedies available and the strategy for calculating damages.

Notice‑period recalculations. The 2026 reforms introduced adjusted notice‑period tables and recalibrated the way notice compensation is calculated for employees with long service. Industry observers expect the likely practical effect will be a modest reduction in notice compensation for some long‑tenured employees, while shorter‑service employees may see little change. Employees dismissed before the reforms took effect but filing claims after the reforms should verify which calculation regime applies to their specific circumstances.

Overtime and night‑work rule changes. The reforms modified the rules governing overtime and night‑work arrangements, including the thresholds and procedures for authorising additional hours. For employees who performed overtime or night work, these changes affect both the calculation of backpay claims and the evidence required to substantiate them. Timesheets and employer authorisation records have become particularly important under the new regime.

Impact on damages for manifestly unreasonable dismissal. While the core framework of CBA No. 109 remains intact, with damages capped at between 3 and 17 weeks’ remuneration, the 2026 reforms have introduced procedural adjustments that early indications suggest will affect how courts assess the employer’s justification for dismissal. Employers are now required to document certain procedural steps before terminating employment, and failure to comply strengthens the employee’s position in court.

Strategic implications for employees. The combined effect of the 2026 changes is to place greater emphasis on documentary evidence and procedural compliance. Employees who assemble a thorough evidence file, including timesheets, authorisation records, and the employer’s written reasons for dismissal, are better positioned to maximise their compensation under the reformed rules. Any notice‑pay or severance calculation prepared before June 2026 should be reviewed against the current rules to ensure it remains accurate.

Common Pitfalls When Bringing an Employment Claim in Belgium

• Missing the filing deadline. The one‑year limitation period runs from the date of termination, not from the date you become aware of a problem. Diarise the deadline immediately and allow time for pre‑action steps.
• Failing to request written reasons. Not sending a registered letter requesting the reasons for your dismissal under CBA No. 109 weakens your evidence file and forfeits the flat‑rate fine for employer non‑response.
• Incomplete evidence bundle. Filing without pay slips, the C4, or the termination letter creates gaps that the employer can exploit. Secure all documents before your access to workplace systems ends.
• Accepting a settlement without verification. Before signing any settlement agreement, have the terms reviewed by a lawyer. Verify that the notice‑pay calculation reflects the correct rules, including the 2026 reforms, and that the tax treatment is properly addressed.
• Filing in the wrong jurisdiction or language. A claim filed at the wrong labour court or in the wrong procedural language triggers delays and may require re‑filing. Confirm the correct district and language before lodging the claim.
• Using pre‑2026 calculation methods. Notice and damage calculations that rely on the pre‑reform tables may understate or overstate the employee’s entitlement. Always apply the rules in force at the relevant date.

Conclusion

Knowing how to bring an employment claim in Belgium gives you a clear framework for action at a time that can feel uncertain and stressful. The process is structured and accessible, Belgium’s labour courts are specifically designed to handle employment disputes efficiently, and filing fees are deliberately kept low to ensure access for employees. The critical steps are to act quickly, secure your documents before access is lost, respect the one‑year filing deadline, and ensure that any compensation calculations reflect the 2026 labour law changes now in force. For guidance tailored to your situation, consult a Belgian labour law specialist or use the Belgian labour lawyer directory to find qualified counsel.

Sources

1. Federal Public Service Employment, Labour and Social Dialogue, Civil Procedure
2. L&E Global, Termination of Employment Contracts in Belgium
3. CMS Expert Guide to Dismissals, Belgium
4. be.brussels, Losing Your Job
5. SettlingInBelgium, Unemployment Benefits
6. HRLegal, Understanding Unfair Dismissal in Belgium