A consultant gives advice that a client says caused a financial loss. A marketing agency misses a critical deliverable. A technology provider makes an error while configuring a customer’s system. Even when a business believes it performed its work properly, a client may allege negligence, mistakes or failure to meet professional obligations. Professional liability insurance, often called errors and omissions (E&O) insurance, is designed to address certain claims arising from professional services.
This guide explains how E&O coverage generally works, who may consider it and what to review before buying. Coverage varies by profession, insurer, policy form and jurisdiction. This article is educational, not legal or insurance advice.
What is professional liability insurance?
Professional liability insurance is intended to protect eligible professionals and service businesses against specified claims alleging errors, omissions, negligence or inadequate performance of professional services. Depending on the policy, it may help with legal defense and covered settlements or judgments, subject to exclusions, limits, retentions and other terms.
It differs from general liability. General liability is commonly associated with certain third-party bodily injury and property damage claims, while E&O focuses on alleged financial harm arising from professional work. Some businesses need both.
Who may need E&O coverage?
- Consultants and business advisers
- Marketing, design and advertising agencies
- IT service providers and software consultants
- Accountants and other financial service professionals, subject to specialized policy forms
- Real estate and other licensed professionals where applicable
- Engineering, architecture and technical service firms
- Freelancers whose client contracts include professional liability requirements
Some professions have specialized professional liability products and regulatory requirements. A standard E&O policy may not be appropriate for every regulated service or activity.
What can professional liability cover?
Depending on the policy wording, covered allegations may include a professional mistake, negligent act, omission, inaccurate advice or failure to perform agreed services. The policy may also define covered professional services narrowly. Work outside that definition can create a coverage issue.
Claims-made policies: what to understand
Many E&O policies are written on a claims-made basis, meaning the policy generally responds only when a claim is first made and reported according to the policy terms, subject to the retroactive date and other conditions. This makes continuity important. Changing insurers, cancelling a policy or allowing a gap can affect protection for earlier work.
Ask about the retroactive date, reporting deadlines, extended reporting period (sometimes called tail coverage), prior-acts coverage and how the policy treats related claims. Do not assume a new policy automatically covers work performed before its effective date.
What affects professional liability insurance costs?
Insurers may consider the profession, services performed, annual revenue, client contracts, project size, geographic reach, claims history, requested limits, deductible or retention and risk-management practices. A technology consultancy and a financial adviser may face very different underwriting questions. Premium examples published online are not a substitute for a quote based on your actual operations.
How to compare E&O policies
- Confirm the policy’s definition of professional services matches the work you actually perform.
- Review claims-made requirements, retroactive dates and reporting deadlines.
- Compare per-claim and aggregate limits, deductibles and retentions.
- Ask whether defense costs reduce the available policy limit.
- Review exclusions for contractual liability, warranties, cyber events and subcontractors.
- Check whether independent contractors and temporary staff are included.
- Compare consent-to-settle provisions and insurer-appointed defense arrangements.
- Match coverage dates and limits to client contract requirements.
Frequently asked questions
Is professional liability the same as general liability?
No. General liability commonly addresses certain third-party injury, property damage and personal or advertising injury claims. Professional liability is designed for specified claims related to professional services, such as alleged errors or omissions. A business may need both policies.
Is E&O insurance required?
Requirements depend on the profession, state rules, licensing conditions and client contracts. Some customers require E&O coverage even when a law does not. Check with the relevant licensing authority and review contract language with a qualified professional.
Does E&O cover cyber incidents?
Do not assume it does. Cyber incidents, privacy events, data restoration and network interruption may require separate cyber insurance. Review the exclusions and endorsements carefully, especially if your business stores or processes customer information.
Final thoughts
For service-based businesses, E&O coverage deserves a close look because a dispute can arise from the advice, design or work delivered to a client. Compare policy definitions and claims-made conditions rather than choosing on price alone. See our small business insurance guide and general liability insurance guide for related coverage considerations.
Editorial disclosure: This article is general information and not a recommendation to purchase a particular policy. Confirm coverage with a licensed insurance professional.