Professional Liability Insurance
Choosing the Right Professional Liability Limits
Choosing the Right Professional Liability Limits — what contractors need to know to protect against professional liability claims.
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How to Match Your PL Limits to Your Actual Exposure
Professional liability insurance (also called Errors & Omissions or E&O) protects contractors when a client claims your professional advice, design input, or project management decisions caused them financial harm. It covers legal defense costs and settlements — gaps that general liability leaves wide open.
The Baseline: $1M Per Occurrence / $2M Aggregate
For most contractors, $1M per occurrence / $2M aggregate is the starting point. This satisfies most contract requirements, covers the majority of professional liability claims, and represents a manageable premium. Smaller firms with straightforward consulting exposure may find this adequate.
When to Buy Higher Limits
Consider $2M–$5M per occurrence when: your project contracts specify higher limits, you work on large commercial projects where total project value exceeds $5M, you have significant design-build exposure, or you serve as construction manager on projects with complex professional service responsibilities.
Per-Occurrence vs. Aggregate Limits
The per-occurrence limit is the maximum paid on any single claim. The aggregate limit is the maximum paid across all claims in a policy year. On claims-made policies, the aggregate resets each year. Ensure your aggregate is at least 2x your per-occurrence limit to protect against multiple simultaneous claims.
Defense Costs Inside the Limit
Most PL policies include defense costs inside the limit. A $1M policy that spends $250,000 on legal defense has only $750,000 remaining for settlement. For this reason, buying $1M limits when you need $1M in settlement capacity is insufficient — buy $1.5M–$2M to account for defense cost erosion.
Contract-Driven Limit Decisions
The simplest way to set limits is to review every contract you’re currently executing and every contract you’re likely to bid. Add up the required PL limits across your contracts — your policy aggregate should meet or exceed your largest contractual requirement, with your per-occurrence covering your most complex single project.