Duty to Defend
The insurer's obligation to provide and pay for a legal defense when a covered claim is made, even if the claim is groundless or frivolous.
What It Is
The duty to defend is the insurer's contractual obligation to provide a legal defense for the insured when a claim or suit alleging covered damages is made. Under the standard ISO CGL policy, the duty to defend is broader than the duty to indemnify — the insurer must defend the entire suit if any part of the claim potentially falls within coverage, even if some allegations are not covered.
The duty to defend is triggered by the allegations in the complaint, not by the actual facts of the case. If the complaint alleges bodily injury caused by the insured's operations — even if the insured believes the claim is completely frivolous — the CGL insurer must provide a defense.
The duty to defend ends when the policy limits are exhausted through payment of judgments or settlements, or when it is determined that no potential for coverage exists. The insurer selects and controls the defense counsel, though in some jurisdictions the insured may be entitled to independent counsel when a conflict of interest exists.
Why It Matters for Brokers
The duty to defend is often more valuable than the indemnity coverage itself, particularly for small and mid-size commercial insureds. Defense costs in a complex liability suit can easily reach $100,000-$500,000. Brokers should help clients understand that CGL coverage is not just about paying claims — it includes the right to a fully funded legal defense. When comparing policy forms, the scope of the duty to defend can vary significantly between carriers.
Real-World Example
A small HVAC contractor is sued by a homeowner alleging that a furnace installation caused carbon monoxide poisoning, resulting in $280,000 in medical bills and $150,000 in pain and suffering. The contractor believes the installation was done correctly and the furnace was defective. Regardless, the CGL insurer assigns defense counsel and spends $120,000 investigating the claim and preparing for trial. The case settles for $195,000. The contractor paid nothing out of pocket — both the $120,000 defense and $195,000 settlement were covered by the CGL policy.
Common Mistakes
- 1Confusing duty to defend with duty to indemnify — the insurer may have a duty to defend even when it is ultimately determined there is no duty to indemnify.
- 2Not explaining to clients that some excess and surplus lines policies have a duty to reimburse (rather than duty to defend), requiring the insured to fund their own defense upfront.
- 3Assuming the duty to defend persists after the policy limits are exhausted — once limits are paid out, the defense obligation typically ends.
How brokerageaudit.com Handles This
Policy Checker identifies whether each liability policy contains a duty to defend or a duty to reimburse provision and flags any deviation from the standard duty to defend. It highlights this distinction in policy comparison reports so brokers can clearly communicate the difference to clients. Submission Intake captures this as a comparison metric when quoting across multiple carriers.