Agency Without Authority
Acting for another without a mandate.
Whoever handles a matter for another without being mandated to do so, for example by helping in an emergency, can under certain circumstances claim reimbursement of their expenses. The condition is that taking on the matter corresponds to the other person's interest and will.
The relevant statutes
§ 677 BGB
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Related terms
General explanation for self-help, not legal advice (RDG). Individual cases may differ: if in doubt, contact a consumer advice center or a lawyer.