One- and two-year loss development sections: what triggers concern?

• A. Significant adverse development
• B. No development
• C. Favorable development
• D. Moderate development

Answer: (A)

In loss development analyses, the early-year sections show how much of the ultimate losses have already been recognized within the first couple of years. A clear warning signal is when there is significant adverse development in those early years—the reported losses are revised upward substantially as more information emerges. This suggests that initial reserve estimates were too optimistic and that there may be more future development (and higher ultimate losses) than anticipated, so reserves may need to be strengthened.

If there is no development, or only modest or favorable development, this is less alarming because it implies the initial estimates were closer to or better aligned with eventual outcomes, even if favorable development can sometimes reflect other factors. The strongest trigger for concern remains significant adverse development.