The incapacity-to-work clause (German: Arbeitsunfähigkeitsklausel, or AU clause) is a feature of some disability insurance tariffs. It links a medically certified sick note to the question of whether a claim has arisen. This point is often misunderstood, so this guide explains what the clause does, where its limits are and what to check before you sign.
Short answer: An incapacity-to-work clause in disability insurance ties a continuous, medically certified inability to work to a period set out in the tariff. Once that period has passed, it can trigger a claim without the insurer assessing the disability in detail. Duration, conditions and effect are set in the tariff. Last updated: October 2026.
The essentials in brief
- A sick note is not automatically occupational disability. The legal definition requires that you can no longer practise your last occupation on a lasting basis.
- The AU clause is a tariff term. It is not included in every tariff and differs in duration and requirements.
- The decisive points are the period, whether the incapacity is continuous and the medical evidence.
- The clause can trigger benefits earlier, but it does not cover every health restriction.
- Before you sign, read the conditions word for word and answer health questions truthfully.
How the AU clause differs from the statutory definition
The law sets out when occupational disability exists. Under section 172 paragraph 2 of the German Insurance Contract Act (VVG, German text on gesetze-im-internet.de) you are occupationally disabled if, because of illness, bodily injury or a decline in strength beyond normal age-related wear, you can no longer practise your last occupation, wholly or partly, probably on a lasting basis. The word lasting is decisive. A temporary illness usually does not meet this requirement.
An incapacity to work, by contrast, is a short-term medical finding that you cannot currently carry out your work. It can follow an operation, an infection or a psychological crisis and may end after days or weeks. For an insurer these are not the same thing.
The AU clause bridges this gap within the tariff. It states that continuous incapacity to work over a fixed period counts as a reason to check or grant benefits. Whether the model suits you depends on the exact wording.
How the clause typically works
The design differs from tariff to tariff. These elements are typical and you will find them in the conditions:
- A medical finding of incapacity to work that is submitted to the insurer.
- A minimum duration of incapacity set out in the tariff. Many tariffs require several months of continuous incapacity.
- A rule on what happens if the incapacity is interrupted, for example by short work attempts or a return to work.
- The consequence: the insurer assesses the claim under the tariff conditions or pays the agreed benefit.
The way evidence is provided has changed. Health insurers now receive incapacity data electronically. The German Health Insurance Association (GKV-Spitzenverband) explains the electronic sick note (eAU) in German. For your disability cover it matters that you keep your certificates and can present them as the tariff requires.
When the clause helps and when it does not go far enough
The AU clause is most valuable when a serious but temporary illness leads to a long period of incapacity and the disability would otherwise be hard to prove. It helps less with complaints that affect you only on individual days or in flare-ups, because interruptions can reset the count.
| Situation | What it means for the AU clause |
|---|---|
| Long, uninterrupted sick leave | Can reach the tariff period and trigger a claim. |
| Several short sick notes with gaps | Continuity is often decisive and can restart the count. |
| Partial return to work | Whether the capacity falls below the tariff threshold must be assessed case by case. |
| Sick note without a diagnosis or proper evidence | Without a medical finding in the required form, the clause gives no entitlement. |
The overview shows basic patterns. Whether a specific case falls under the clause depends on the wording of the tariff and, where relevant, on the insurer’s assessment of the individual case.
Example: how a claim is assessed in practice
Imagine you are signed off sick for several months in a row after a serious operation. Your tariff sets a minimum period, which is written into the contract. The insurer checks whether that period has been reached using the medical findings you submit. A short work attempt after the operation can be decisive, depending on how the interruption rule is worded.
The sequence can be summed up in five steps:
- The sick leave begins, and medical findings are issued on an ongoing basis.
- The insurer checks whether the incapacity is continuous and which interruptions the tariff allows.
- Once the minimum period in the tariff is reached, the insurer checks the other conditions.
- The insurer may also request further documents, such as reports from treating doctors.
- The result is either a benefit under the tariff or a reasoned refusal that you can challenge.
The sequence shows why clean documentation and a precise knowledge of the conditions matter so much.
Why the health questions matter for the AU clause
The clause does not replace the health check. When you apply you must disclose prior illnesses and treatments that the insurer asks about explicitly. Under section 19 VVG there is a duty to disclose circumstances that are material to the insurer and about which it asked in text form. Incomplete answers can affect benefits later.
Frequently asked questions
Does disability insurance pay out as soon as I am signed off sick?
Not automatically. A sick note alone is not occupational disability. Only when the tariff conditions are met, for example through the AU clause with a minimum duration, can a benefit be triggered.
Does my incapacity need to be certified by a doctor?
Generally yes. The clause requires a medical finding. Which evidence the tariff demands is set out in the conditions. Check this before a claim arises.
What happens if I work again in between?
That depends on the tariff. Many clauses have rules for short work attempts or resumptions. These rules are often decisive for the right to benefits, so read the conditions carefully.
Does the clause also apply to mental health conditions?
That depends on the tariff and the individual case. Mental health conditions are assessed differently across disability policies. Ask explicitly how the tariff treats them and keep complete medical records.
Is the AU clause included in every disability policy?
No. Whether and in what form an AU clause is agreed varies by tariff. Its absence is not a judgement on quality, but it changes the position in a claim.
Do I need to tell my health insurer or employer anything special?
For disability cover, documentation matters. Your doctor establishes the incapacity, and the electronic transmission runs through your health insurer. For a claim you also need the documents the tariff requires.
How to proceed now
- Read the section on incapacity to work in the tariff word for word. Note the minimum duration, the interruption rule and the required evidence.
- Compare the clause with the statutory definition in section 172 VVG. Ask how the insurer assesses partial capacity to work.
- Have the health questions explained to you before you sign. If in doubt, you can ask Academycon for a personal assessment: How we work (in German).
- Keep all sick notes and discharge letters carefully once you are insured.
Related guides
- BU rider and inflation protection explained
- Disability insurance for students: costs and start (in German)
- Disability insurance in medical studies (in German)
- Retirement provision for students: starting early with small amounts (in German)
Sources:
- § 172 VVG, occupational disability (gesetze-im-internet.de, retrieved October 2026, German text)
- GKV-Spitzenverband, electronic certificate of incapacity to work (eAU), retrieved October 2026, German
Last updated: October 2026. This guide is general information, not individual advice.
