Every answer and its explanation appears here once you have finished the path. Each one then links to the matching glossary entry, where the concept is set out in full with its worked example.
1. Who places the hours window, when, and how many times?
The cedant, after the fact, once the sequence has ended and the amounts are known, and the choice is exercised only once. The window must be continuous
The treaty grants this right to the cedant because denying it would make recovery depend on a meteorological convention neither party controls. It is therefore a choice worth real money, exercised knowing the figures, and the reinsurer knows this when quoting. The answer on the lead hands that choice to whoever pays. The one on a third-party body describes a wording that exists to open the window in some treaties, not to place it in the cedant's stead. The one requiring a choice before the sequence ends removes the essential: the choice is only worth anything made in knowledge of the amounts.
Glossary entry →2. Aggregating always looks favorable, since one occurrence means one priority. When does that stop being true?
As soon as the aggregated sequence exceeds the top of the layer: the cedant pays one priority, exhausts its limit, and bears the whole excess net. What decides is not the priority but the limit
By splitting, the cedant pays two priorities but presents an unsaturated layer twice, and total recovery can be higher. The priority pushes toward aggregating, the limit pushes toward splitting, and a third quantity is added, what capacity remains for the year. The answer making splitting mandatory beyond the window confuses a formal constraint, the window is continuous and bounded, with an obligation to split. The one on reinstatements names the third quantity and presents it as the test, when it is added to the calculation rather than deciding it. The one on perils describes a case where several clauses coexist, a question of characterization and not of arbitrage.
Glossary entry →3. The hours clause makes sense because a hurricane has a start, an end and a name. What becomes of it on a peril with no natural occurrence?
It becomes absurd: a compromise introduced one day, dormant for months, then activated in waves cannot be dated, and moving the window changes the number of occurrences with no external fact requiring it
The problem is current rather than theoretical: cyber catastrophe bonds are issued on a per-occurrence basis, which applies an hours clause to a peril that carries none, and the disagreement surfaces at claim time. The answer on the discovery date describes a convention one would be tempted to adopt and that moves the arbitrariness without removing it. The one on longer windows treats a problem of nature as a question of duration. The one pointing to aggregate cover names the structure that does answer frequency, and answers a different question from the one asked, which is what becomes of the clause.
Glossary entry →4. Among the wording points that decide what the clause is worth, which bears on its trigger, and why does it matter?
What opens the window: the first damage, or a meteorological fact named and dated by a third-party body. Depending on the answer, the choice belongs to the cedant or is fixed from outside
Four points decide what the clause is worth and are read before signing: what opens it, its scope, the combination of perils, and the agreement of definitions with the policies issued. The trigger is the only one touching the hand that places the window, hence the choice itself. The answer on duration names the most visible parameter, and the certification exam asks in any case what multiplies occurrences at equal duration, which shows duration is not enough. The ones on reinstatements and on the definition of the peril name real parameters acting before or after the window, never on it.
Glossary entry →5. The policies issued define the event differently from the treaty. Who bears the gap, and when is it discovered?
The cedant, and it discovers this when paying: it indemnifies its insureds under its policies and recovers under its treaty, so the difference stays with it without any clause having warned
Agreement of definitions is one of the four points to check before signing, and it is the one whose omission shows only at settlement: the cedant is caught between two contracts it signed separately. The answer giving the treaty priority inverts the hierarchy, a reinsurer committing only on its own terms. The one placing the gap on the insureds is doubly wrong, the policies binding as written and the treaty being nothing to them. The one concluding they coincide describes what one would wish and nothing guarantees, the two texts being negotiated at different times with different counterparties.
Glossary entry →