Translating a Medical Certificate in Belgium: Sworn or Not?

Do you need to translate a medical certificate in Belgium, for your employer, your health insurer, a government office or a foreign authority? Depending on the recipient, a professional translation may be enough, or a sworn (certified) translation will be required. Here is how to make the right choice and obtain a reliable, confidential and accepted document.

📖 See also : medical translation in Belgium · sworn translation guide · medical translation rates

Professional or sworn translation?

A medical certificate is a sensitive document that attests to a state of health, an inability to work, a fitness status or a care procedure. Before ordering, you need to distinguish two levels of service. A professional translation is a high-quality translation produced by a specialist translator: it renders the content faithfully, without any particular official value. A sworn translation(or certified translation) is signed and stamped by a sworn translator listed in the national register: it has an official value recognised throughout Belgium.

The choice does not depend on the document itself, but on who will receive it. There is no single rule: the reflex is always to ask the recipient which format they accept before starting the translation.

When a professional translation usually suffices

• Employer or HR department : to justify an absence or an inability to work.
• Health insurer or mutuelle : many accept a professional translation, but some require a sworn one for reimbursement.
• School, club or sports federation : for a fitness certificate or an exemption.
• Treating doctor or specialist : for continuity of care, accuracy matters more than the format.

When a sworn translation is usually required

• Belgian administration : municipality, social-security body, official authority.
• Court or expert assessment : a medical document added to a judicial file.
• Visa or immigration file : authorities almost always require a certified version.
• Foreign authority : a Belgian document presented abroad generally calls for sworn certification.

Which medical documents can be translated?

The medical certificate is only one type of document among others. In practice, requests cover a wide range of papers, each with its own terminology.

• Medical certificate : inability to work, sick leave, fitness for work or sport, exemption.
• Medical report or summary : hospitalisation, consultation, imaging, anatomical pathology.
• Prescription : prescription of medication or treatment.
• Vaccination certificate : proof of immunisation for travel or enrolment.
• File for insurance or an accident abroad : evidence of care received outside Belgium.
• Forensic medical assessment : report intended for judicial proceedings or a dispute.

For each of these documents, the reflex stays the same: confirm with the recipient whether they expect a professional or a sworn translation. To go deeper into the technical dimension, read our analysis of the quality challenges in medical translation.

Quality and confidentiality: two non-negotiable requirements

In medical translation, a terminology error is no small matter: a poorly rendered term can distort an administrative decision, delay treatment or compromise a file. That is why these documents must be entrusted to specialist translators who master medical vocabulary and the conventions specific to each language.

Health data are also particularly sensitive data within the meaning of the GDPR. Your documents must be handled with strict confidentiality, used only for the translation and stored securely. Confidentiality is also an ethical obligation of the translator. To find out who is authorised to produce an official version, see who can produce a sworn translation in Belgium.

Language pairs and the sworn version

The most common needs in Belgium involve the pairs French, Dutch and English, with a regional logic: a document intended for a Flemish administration will often be expected in Dutch, and in French on the Walloon or Brussels side. Many other languages are also covered for international files.

When the sworn version is required, the sworn translator affixes their signature and stamp, which gives the document an official value recognised everywhere in Belgium. To understand the procedure from start to finish, browse our sworn translation guide.

Apostille or legalisation: when is it needed?

If your translated medical certificate must be presented abroad, a simple sworn translation is not always enough. The receiving country may require an apostille (for countries that signed the Hague Convention) or a legalisationby the competent authorities. This step authenticates the sworn translator's signature and enables international recognition of the document.

Conversely, a document intended strictly for Belgian use generally does not require this formality. Here too, check the exact requirement with the authority concerned. Our article apostille or legalisation in Belgium details the various scenarios.

How TranslateBE supports you

1. You send us your document and the name of the recipient (employer, insurer, administration, foreign authority).
2. We advise you on the right level of certification and any apostille to anticipate.
3. A specialist translator translates your certificate with accurate medical terminology.
4. You receive the translation, professional or sworn, in the expected format.