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📈 '''Social inflation''' describes the rising cost of insurance [[Definition:Claim | claims]] driven by societal trends — broader legal theories of liability, larger [[Definition:Jury verdict | jury verdicts]], increased [[Definition:Litigation | litigation]] funding, and shifting public attitudes toward corporate responsibility — rather than by traditional economic [[Definition:Inflation | inflation]] alone. In the insurance sector, the term captures a phenomenon that has become one of the most discussed drivers of [[Definition:Loss ratio (L/R) | loss ratio]] deterioration, particularly in U.S. [[Definition:Liability insurance | casualty]] and [[Definition:Long-tail business | long-tail]] lines such as [[Definition:Commercial auto insurance | commercial auto]], [[Definition:General liability insurance | general liability]], [[Definition:Medical malpractice insurance | medical malpractice]], and [[Definition:Directors and officers liability insurance (D&O) | D&O]].

⚙️ Several reinforcing mechanisms fuel the trend. [[Definition:Litigation funding | Third-party litigation funding]] enables plaintiffs to pursue larger, longer cases they might otherwise have settled early. "Nuclear" and "thermonuclear" verdicts — [[Definition:Jury verdict | jury awards]] exceeding $10 million and $100 million, respectively — have become more frequent, expanding what juries consider reasonable compensation. Plaintiff attorneys increasingly employ "reptile theory" and anchoring strategies to inflate damage assessments. For [[Definition:Actuary | actuaries]] and [[Definition:Reserving | reserving]] teams, social inflation is particularly insidious because it does not appear neatly in standard [[Definition:Loss development | loss development]] patterns; it emerges gradually, often disguised within normal variability until a trend becomes unmistakable and [[Definition:Reserve development | reserve deficiencies]] accumulate.

🔎 Failing to account for social inflation has cost insurers billions in unexpected [[Definition:Reserve development | adverse reserve development]], making it a board-level concern at major [[Definition:Insurance carrier | carriers]] and [[Definition:Reinsurer | reinsurers]]. [[Definition:Underwriter | Underwriters]] in affected lines have responded with significant [[Definition:Rate adequacy | rate increases]], tighter [[Definition:Policy terms and conditions | terms and conditions]], reduced [[Definition:Policy limit | limits]], and more selective [[Definition:Risk selection | risk selection]]. [[Definition:Reinsurance | Reinsurers]] have adjusted [[Definition:Excess of loss reinsurance | excess-of-loss]] pricing and attachment points to reflect the heavier tail. The phenomenon also reinforces the importance of [[Definition:Severity | severity]] trend analysis, because social inflation disproportionately inflates the largest claims — precisely the ones that penetrate higher layers and [[Definition:Umbrella insurance | umbrella]] or [[Definition:Excess insurance | excess]] programs.

'''Related concepts'''
{{Div col|colwidth=20em}}
* [[Definition:Severity]]
* [[Definition:Litigation funding]]
* [[Definition:Nuclear verdict]]
* [[Definition:Reserve development]]
* [[Definition:Long-tail business]]
* [[Definition:Loss ratio (L/R)]]
{{Div col end}}

Definition:Social inflation - Revision history

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