{
  "id": "clause-aggregate-extension-clause",
  "type": "clause",
  "languages": {
    "en": {
      "id": "clause-aggregate-extension-clause",
      "lang": "en",
      "type": "clause",
      "title": "Aggregate Extension Clause",
      "shortDefinition": "The aggregate extension clause allows several smaller individual losses arising from the same natural event to be aggregated for the purposes of a catastrophe excess of loss cover, instead of each falling below the retention individually.",
      "synonyms": [
        "Aggregation clause"
      ],
      "linesOfBusiness": [
        "Reinsurance",
        "Natural catastrophe"
      ],
      "jurisdictions": [
        "Global"
      ],
      "tags": [
        "Reinsurance",
        "Natural hazards"
      ],
      "relations": {
        "relatedTerms": [
          "term-cat-xl",
          "clause-hours",
          "riskg-natural-hazards",
          "term-erschoepfungsklausel"
        ],
        "partOf": [],
        "appliesTo": [
          "term-cat-xl"
        ],
        "regulatedBy": [],
        "relevantFor": [],
        "insurableVia": [],
        "mitigatedBy": [],
        "comprises": [],
        "alternativeTo": [],
        "complementedBy": []
      },
      "attribute": null,
      "profile": null,
      "coverageProfile": null,
      "clause": {
        "kind": "extension",
        "origin": "reinsurance-market",
        "favours": "insured",
        "negotiability": "negotiable",
        "standardWordings": []
      },
      "legalBasis": [],
      "standards": [],
      "reviewStatus": "expert-reviewed",
      "reviewedBy": "Guido Hesse, Hesse Group Holding AG",
      "lastReviewed": "2026-09-04",
      "version": "0.2.0",
      "updated": "2026-09-03",
      "generated": {
        "by": "cursor-agent/claude-sonnet-5",
        "at": "2026-09-03T00:00:00.000Z"
      },
      "verified": [
        {
          "by": "human:ghesse",
          "at": "2026-09-04T00:00:00.000Z",
          "method": null
        }
      ],
      "staleAfter": null,
      "url": "https://hgh.ch/lexikon/en/knowledge/clause/aggregate-extension-clause/",
      "alternateUrl": "https://hgh.ch/lexikon/de/wissen/klausel/aggregate-extension-klausel/",
      "body": "## Purpose\n\nCat XL treaties are designed for major events, yet many natural perils cause a large number of smaller losses that individually fall below the retention but are significant in aggregate. The aggregate extension clause extends the treaty so that such individual losses are combined into a single aggregated loss occurrence and applied jointly against the retention.\n\n## Effect and limits\n\nWithout the clause, the cedent would retain many small losses itself even though, cumulatively, they amount to a major loss economically. The clause works closely together with the definition of the loss occurrence (hours clause, loss occurrence definition) and is limited to the same trigger event within the same time period.\n\n## Negotiation and practice\n\nDetermining which losses still belong to \"the same event\" is the key point of dispute for large accumulation losses; clear alignment with the hours clause reduces room for interpretation. Cedents with a high frequency of smaller accumulation losses (hail, windstorm) benefit particularly from this extension."
    },
    "de": {
      "id": "clause-aggregate-extension-clause",
      "lang": "de",
      "type": "clause",
      "title": "Aggregate-Extension-Klausel",
      "shortDefinition": "Die Aggregate-Extension-Klausel erlaubt es, mehrere kleinere Einzelschäden aus demselben Naturereignis für die Zwecke einer Katastrophen-Exzedenten-Deckung zusammenzurechnen, statt sie einzeln unter der Priorität verfallen zu lassen.",
      "synonyms": [
        "Kumulklausel Cat-XL"
      ],
      "linesOfBusiness": [
        "Rückversicherung",
        "Naturgefahren"
      ],
      "jurisdictions": [
        "Global"
      ],
      "tags": [
        "Rückversicherung",
        "Naturgefahren"
      ],
      "relations": {
        "relatedTerms": [
          "term-cat-xl",
          "clause-hours",
          "riskg-natural-hazards",
          "term-erschoepfungsklausel"
        ],
        "partOf": [],
        "appliesTo": [
          "term-cat-xl"
        ],
        "regulatedBy": [],
        "relevantFor": [],
        "insurableVia": [],
        "mitigatedBy": [],
        "comprises": [],
        "alternativeTo": [],
        "complementedBy": []
      },
      "attribute": null,
      "profile": null,
      "coverageProfile": null,
      "clause": {
        "kind": "extension",
        "origin": "reinsurance-market",
        "favours": "insured",
        "negotiability": "negotiable",
        "standardWordings": []
      },
      "legalBasis": [],
      "standards": [],
      "reviewStatus": "expert-reviewed",
      "reviewedBy": "Guido Hesse, Hesse Group Holding AG",
      "lastReviewed": "2026-09-04",
      "version": "0.2.0",
      "updated": "2026-09-03",
      "generated": {
        "by": "cursor-agent/claude-sonnet-5",
        "at": "2026-09-03T00:00:00.000Z"
      },
      "verified": [
        {
          "by": "human:ghesse",
          "at": "2026-09-04T00:00:00.000Z",
          "method": null
        }
      ],
      "staleAfter": null,
      "url": "https://hgh.ch/lexikon/de/wissen/klausel/aggregate-extension-klausel/",
      "alternateUrl": "https://hgh.ch/lexikon/en/knowledge/clause/aggregate-extension-clause/",
      "body": "## Zweck\n\nCat-XL-Verträge sind auf Grossereignisse ausgelegt; viele Naturereignisse verursachen jedoch eine Vielzahl kleinerer Schäden, die einzeln unterhalb der Priorität bleiben, in der Summe aber erheblich sind. Die Aggregate-Extension-Klausel erweitert den Vertrag so, dass solche Einzelschäden zu einem aggregierten Schadenereignis zusammengefasst und gemeinsam gegen die Priorität angerechnet werden.\n\n## Wirkung und Grenzen\n\nOhne die Klausel würde der Zedent viele kleine Schäden selbst tragen, obwohl sie kumuliert wirtschaftlich einem grossen Schaden entsprechen. Die Klausel wirkt eng zusammen mit der Definition des Schadenereignisses (Hours Clause, Loss Occurrence Definition) und ist auf denselben Auslöser (dasselbe Naturereignis, denselben Zeitraum) beschränkt.\n\n## Verhandlung und Praxis\n\nDie Abgrenzung, welche Schäden noch «demselben Ereignis» zugerechnet werden, ist der zentrale Streitpunkt bei Grossschäden; eine klare Verzahnung mit der Stundenklausel reduziert Interpretationsspielraum. Zedenten mit hoher Frequenz kleinerer Kumulschäden (Hagel, Sturm) profitieren besonders von dieser Erweiterung."
    }
  }
}