Lisäehtoja

Lisäehtoja are supplementary clauses appended to a contract to modify, specify, or extend its terms for a particular transaction or party. They are usually attached as an annex, rider, or separate agreement and become binding once the parties have agreed to them. Lisäehtoja allow contracting parties to tailor general terms and conditions (GTC) to the specifics of a deal, address issues not covered by the main contract, or reflect negotiated concessions.

Formation and enforceability: Lisäehtoja require mutual assent and clear, intelligible language. In many jurisdictions they must be in writing or affixed to the main contract, and electronic consent is often valid. They must not contradict mandatory law; clauses that are illegal or unenforceable in whole or part are typically void. In consumer contracts there may be additional protections against unfair terms or unilateral amendments.

Content and examples: Typical lisäehtoja address payment terms (due dates, penalties), delivery terms and risk transfer, warranty and service levels, liability and indemnification, data protection and confidentiality, limitation of liability, termination, and governing law or dispute resolution. They may introduce sector-specific terms such as software maintenance windows, service credits, or custom performance metrics.

Relationship to general terms: Lisäehtoja complement but do not override mandatory provisions of the main contract or overarching law. If there is a conflict with the main terms, the contract should specify which terms prevail or trigger renegotiation.

See also: addendum, annex, contractual amendment, terms and conditions.