Modify a reserve analysis when the environment moves under it: case reserve adequacy shifts, settlement rate changes, business mix or rate level changes, and inflation or legal developments.

Free CAS Exam 5 (Basic Ratemaking and Reserving) lesson in Estimating Claim Liabilities. 21 min read, ~3,093 words.

Case reserve strengthening inflates reported (incurred) development factors, so a reported chain ladder overstates ultimate until you correct it; weakening understates. Settlement acceleration inflates apparent paid maturity, so a paid chain ladder overstates ultimate; a slowdown understates. Before adjusting, consider rearranging the data: swap claim counts for earned exposures, accident...

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