In the SIGMA Tech Talk titled “Understanding Loss Development Factors,” we introduced IBNR losses as those losses which occur during a loss period but are not reported until a later date. The definition of IBNR also typically includes development of known claims. In this article, we look further at the significance and calculation of IBNR […]

Whether you are a broker, CFO, or risk manager, you have probably heard the terms loss development triangle, loss development factor, and IBNR (incurred but not reported losses). These are often included in the first analytical step of an actuarial analysis. Yet a survey of insurance professionals would likely result in a long list of […]