Joint Liability
Legal principle where multiple parties share responsibility for harm, each potentially liable for the full damage.
Definition
Joint Liability (also called joint and several liability) is a legal principle where multiple parties who contribute to causing harm can each be held responsible for the entire damage, allowing the injured party to seek full compensation from any liable party.
Relevance to AI: AI systems typically involve multiple actors who may share liability:
- Model developers (foundation model providers)
- System integrators (deployers who customize models)
- Hardware manufacturers
- Data providers
- End users (in some cases)
EU AI Act Liability Chain:
- Providers: Primary responsibility for high-risk AI compliance
- Deployers: Responsible for proper use according to instructions
- Distributors/Importers: Must verify provider compliance
- Each actor has specific obligations; failure creates potential liability
EU Product Liability Directive Application:
- Multiple manufacturers of product components may be jointly liable
- Injured party can claim from any liable manufacturer
- Liable parties can seek contribution from co-defendants
Practical Implications:
- Contracts should address liability allocation between AI value chain participants
- Insurance considerations for each party
- Due diligence on upstream and downstream partners
Related concepts: AI Liability, Provider, Deployer, AI Value Chain
Sources
- •EU AI Act Article 25
- •Civil Liability Law
Related Terms
AI Liability
Legal frameworks determining responsibility and compensation when AI systems cause harm or damage....
Provider
An entity (natural or legal person, public authority or body) that develops or commissions an AI system or general-purpose AI model and places it on the market or puts it into service under its name or trademark....
Deployer
A deployer is a natural or legal person, public authority, agency or other body that uses an AI system under its authority for professional/organisational purposes (excludes personal use)....