Chapter 21 — Key Takeaways

Commercial General Liability Underwriting: The Coverage That Protects Against Lawsuits — a one-page card.

The core claims

• CGL is third-party coverage with a duty to defend. It pays sums the insured is legally obligated to pay as damages to others, and it pays to defend the insured — even a groundless suit — usually with defense costs outside the limits.
• Three insuring agreements. Coverage A = bodily injury & property damage (split into premises/operations, short-tail, and products-completed operations, long-tail). Coverage B = personal & advertising injury (non-physical offenses). Coverage C = small no-fault medical payments.
• The premises is the part you can see; the products tail is the part that decides the outcome. The most expensive CGL mistake is pricing a factory like an office — rating the premises you can inspect and undervaluing the products/completed-operations exposure accumulating out in the world.
• The trigger governs everything. The standard CGL is an occurrence form: it covers harm that occurs during the term, however late the claim arrives, leaving a long reportable tail. Claims-made forms (E&O, D&O, EPL, cyber) cover claims first made during the term, closing the tail.
• The exposure base turns operations into premium. Payroll, gross sales, area, admissions, or units by class — chosen to track the exposure, and auditable, because most liability premiums are trued up to actual exposure at year-end.
• Additional insureds and contractual liability are rated features, not paperwork. Each extends coverage to strangers and assumed liabilities the base premium never contemplated — sharing the limit, possibly reaching the additional insured's own negligence, and closing off subrogation.
• The umbrella backstops severity. Excess/umbrella sits over the CGL (and auto and employer's liability), requires the underlying limits be maintained, and is priced almost entirely on severity.

The rule of thumb

On a long-tail line, your loss runs lie — they show reported claims, not ultimate claims, and the recent years are the most incomplete. Develop them upward. And the discipline to charge an adequate products rate in a soft market — when the losses won't surface to prove you right for years — is the hardest and most important discipline on a casualty desk. Underpricing a known tail is the most seductive mistake in insurance because the feedback is delayed by years.

The key calculation (illustrative)

LIABILITY PREMIUM, IN ONE LINE                        [constructed teaching example]
  premium ≈ rate × exposure units
         = (loss cost per $1,000 of base × modifiers) × (sales or payroll ÷ $1,000) + loads
  ...then AUDITED at year-end to ACTUAL sales/payroll, adjusting premium up or down.

Key terms

commercial general liability (CGL) · occurrence vs. claims-made trigger · products-completed operations · premises/operations · personal & advertising injury · additional insured · exposure base

What you could defend to your manager

"Harbor Steel's general liability is writable. The premises/operations exposure is routine and pricable from the record. The real risk — and the watch-item — is products-completed operations: load-bearing structural steel installed in third-party buildings, long latency, litigious field, and one pending bracket-failure claim that proves the exposure is live. I've classified the products exposure on a sales base, set the products aggregate with the tail in mind, flagged the additional-insured and contractual exposure from Harbor Steel's customer contracts for endorsement-edition control and pricing, and put the pending claim in the file. I have not priced this tail off the quiet premises record, and I won't — that's exactly how a casualty account looks fine for three years and blows up in the fifth."