Medical Certificate in Brussels: Online, Same-Day from €34.99

Brussels is Belgium's capital and the de facto capital of the European Union, home to the European Commission, the Council of the European Union and NATO's political headquarters in Haren — together with the wider international-organisation sector, these bodies account for roughly 50,000 jobs in the region. Under Belgian labour law, an employee who falls ill must notify their employer immediately and generally submit a certificat médical (French) or medisch attest (Dutch) within two working days, though the exact deadline can be narrowed by a sector collective agreement (CCT/CAO) or company work rules; since January 2026, employees can only skip the certificate for a single day of absence twice per calendar year, down from three.

Finding a same-day GP appointment in Brussels isn't always simple, especially in international-heavy communes like Ixelles/Elsene and Etterbeek near the EU quarter, where many practices are booked out or operate primarily in French or Dutch. Our online service lets you submit your case to a registered doctor in minutes, with most assessments completed within 24 hours, so you don't have to navigate a language barrier or lose a day chasing an appointment.

Common situations we see from Brussels: EU institution and NATO-linked contractor staff who need quick, English-language documentation around international schedules, expat and international employees whose French or Dutch is limited but who still need paperwork that satisfies a Belgian employer, and students at the Université libre de Bruxelles (ULB) or the Vrije Universiteit Brussel (VUB) needing medical proof for an exam deferral.

The largest single employer in the Brussels-Capital Region is not an institution but a transport company: STIB/MIVB runs the metro, tram and bus network with more than 10,000 staff on rotating rosters. Healthcare is the other giant. The Hôpital Universitaire de Bruxelles group carries more than 6,000 personnel across 1,420 beds, UZ Brussel in Jette employs close to 5,000, and Hôpital Erasme alone lists over 3,000 people working in more than 80 different professions. These are organisations where an absence becomes a formal HR file rather than a word with a supervisor, which is exactly where a written certificat médical or medisch attest earns its keep. It also means the people who most often need a certificate outside office hours — shift-working care and transport staff — are the same people keeping the city's clinics busy.

Brussels is also the one place in Belgium where families deal with two separate school-absence regimes side by side. In a Flemish Community secondary school, a parent may write their own sick note four times per school year, each time for a maximum of three consecutive calendar days, and an absence during an exam period always needs a doctor's certificate — a parent's note is never enough. In a Fédération Wallonie-Bruxelles secondary school, a medical certificate must reach the school by the day after the last day of absence if the absence was three days or shorter, or by the fourth day of a longer absence; how many half-days a parent may justify themselves is set by each school's own internal rules, typically somewhere between 8 and 16 per year. If your children attend schools in different systems — common in bilingual Brussels households — both sets of deadlines run at once.

1. 1

   Complete assessment

   3-5 minutes. Select your certificate type, confirm Belgium as your country, and answer relevant health questions in detail. No payment is taken yet.

2. 2

   Licensed doctor reviews

   A doctor registered to assess cases in Belgium reviews your answers during business hours (9am-6pm CET, Monday-Friday) and may request more information before deciding.

3. 3

   Receive your PDF

   Emailed same day, usually within 30 minutes of approval, with the doctor's credentials and a verification reference an employer or institution can check.

The €55-85 figure is a typical range reported for a standard private in-person consultation in Belgium, and can vary by location, provider, and whether part of the cost is reimbursed through your mutuelle/ziekenfonds.

Note on collective bargaining agreements (CCT/CAO): Because Belgian certificate deadlines and requirements are frequently set or adjusted at sector level, the "2 business days" figure above should be treated as a common default only. Your specific sector, employer policy, or employment contract may set a shorter or longer deadline, or add extra conditions such as how the certificate must be delivered (post, email, internal HR portal) or what it must state. When in doubt, check your contract or ask your employer's HR team before relying on any single figure for a specific case.

Read the full Belgium rules, glossary and national FAQ →

Every Belgium certificate is reviewed by a doctor registered to assess cases in Belgium. Doctor credentials are shown on your certificate. A clinician will only issue a certificate after assessing your specific case and if it is clinically appropriate to do so: if it is not, you receive a full refund rather than a certificate that may not hold up if questioned. We do not offer instant, no-consultation certificates: every request goes through an individual medical review before any document is produced, and the doctor may ask you follow-up questions if your initial answers do not give them enough information to reach a decision. This matters because a certificate that was never genuinely reviewed carries real risk for you if it is ever challenged by an employer, club, or institution. Our process is built so that never happens.

Other cities in Belgium

• Antwerp
• Bruges
• Charleroi
• Ghent
• Liège