Aon vs 
Pie Insurance: How Do They Compare for Professional Liability (E&O) Insurance?
Aon: professional liability as addressing professional-services firms’ liability exposure and says it tailors coverage structures to a firm’s needs. It identifies E&O as a commonly used name for professional-liability insurance; actual policy terms are not stated. Pie Insurance: pie describes errors and omissions insurance, also called professional liability insurance, as covering legal fees, costs, and damages for claims that a business's advice or services caused harm, including claims of inaccurate advice, misrepresentation, negligence, or violation of good faith, but says it does not protect against criminal prosecution. 3,7
What Is Aon?
Aon’s U.S. Commercial Risk terms describe brokerage for certain insurance programs, while its Middle Market page describes a dedicated practice for mid-sized organizations across North America. The public materials reviewed do not identify the licensed producer or insurer for a particular placement. Ask which entity will produce each line and which insurer will issue the policy; request jurisdiction details for the proposed placement and ask how compensation and claim notice work for your account. 1,2
What Is Pie Insurance?
Pie suits small businesses seeking workers’ compensation with online quoting and pay-as-you-go billing based on reported payroll, without an initial deposit; firms needing a broad technology or executive program should look elsewhere. 4,5,6
Read the Pie Insurance profile
Read the Pie Insurance Professional Liability (E&O) Insurance page
What Is Professional Errors and Omissions (E&O) Insurance?
Professional liability can help pay defense costs and covered losses when a client says your advice or service caused financial harm. If customers rely on your work, list every service you provide and check the claims-made reporting and prior-work terms. 8,9,10,11
Key Differences in Professional Liability (E&O) Insurance
Professional firm or small-business placement
Aon names law, accounting and consulting firms for its professional-services practice; Pie says it helps small businesses find E&O through carrier partners. A professional firm can ask Aon about tailored advice, while a small business can ask Pie which partner will quote its work. 3 7
Claims described by Pie
Pie lists legal fees, costs and damages for harmful advice or services, including negligence and misrepresentation, while Aon describes professional-liability structures without enumerating allegations. Compare the actual insuring agreement against client claims your work could trigger. 3 7
Eligibility and application
Pie names architects, contractors, attorneys, engineers, consultants, marketers, counselors and real-estate agents as common E&O buyers; Aon names law, accounting and consulting firms. Pie directs buyers to start a quote online, while Aon describes a professional-services advisory practice. Confirm underwriting appetite and how the quote begins. 3 7
What to Confirm in Professional Liability (E&O) Insurance Quotes
- Ask Aon to confirm the quoted policy form, retroactive date and covered allegations; its offering says professional liability as addressing professional-services firms’ liability exposure and says it tailors coverage structures to a firm’s needs. It identifies E&O as a commonly used name for professional-liability insurance; actual policy terms are not stated. 3
- Ask Pie Insurance to confirm the quoted policy form, retroactive date and covered allegations; its offering says pie describes errors and omissions insurance, also called professional liability insurance, as covering legal fees, costs, and damages for claims that a business's advice or services caused harm, including claims of inaccurate advice, misrepresentation, negligence, or violation of good faith, but says it does not protect against criminal prosecution. 7
Aon and Pie Insurance Review Scores for 2026
These averages can combine ratings for different products, locations, and customer groups, including approximate BBB grade conversions. Read each review for the sources, scope, and calculation.
Aon Review Score
Review Score
3 rated sources
Public ratings for Aon are low: Trustpilot shows 1.2 out of 5 from 782 reviews, and BBB shows 1.6 from five. Aon is a global firm, so those pages mostly reflect other parts of the business, not large U.S. commercial accounts.[4][6][7]
Read Aon reviewsPie Insurance Review Score
Review Score
2 rated sources
Pie’s service record raises clear concerns: elevated regulator complaints reported by NerdWallet, 1.7/5 on Trustpilot and an F from BBB. Investigate billing, cancellation and complaint handling before buying.[1][4][6]
Read Pie Insurance reviewsAon vs Pie Insurance Professional Liability (E&O) Insurance Compared
Aon vs Pie Insurance: Professional Liability (E&O) Insurance: documented features by provider
| Criteria | Aon Professional Liability / E&O brokerage and risk-advisory offering | Pie Errors and Omissions Insurance |
|---|---|---|
| Role in This Line | Aon presents Professional Liability / E&O as a line its Professional Services Practice helps arrange or advise on for professional-service firms. Aon is describing a global brokerage and advisory service, not issuing the underlying policy. The producing legal entity and carrier for any particular placement are not named on this page. 3Company-reported. Aon’s global professional-services practice page. This establishes a marketed brokerage/advisory offering, not policy issuance or account-specific placement. | Pie says it helps small businesses get the best errors and omissions coverage 'from our insurance carrier partners,' identifying itself as an intermediary rather than the underwriter for this line. 7Company-reported. Errors and Omissions product page as read on 2026-09-23. |
| Issuing Insurer | The reviewed practice page does not name the insurer or producing legal entity for a specific placement. Ask for both on the quote and binder. 3Not found in reviewed sources. Aon’s global practice page as reviewed 2026-09-30; no state-specific placement schedule or buyer quote was reviewed. This does not establish that Aon cannot arrange a placement. | The reviewed page refers only to 'our insurance carrier partners' and does not name a specific insurer for Pie's errors and omissions product. 7Not publicly disclosed. Errors and Omissions product page as read on 2026-09-23. |
| Who It’s For | Aon identifies law, accounting and consulting firms as the audience for its global Professional Services Practice. That audience scope does not establish eligibility for every firm or other business. 3Company-reported. Audience described for Aon’s global professional-services practice. It does not establish U.S. state availability or underwriting eligibility for a placement. | Pie names architects, contractors, attorneys, engineers, consultants, marketers, counselors, and real estate agents as professionals who often carry E&O insurance, and notes some states or clients require proof of coverage. 7Company-reported. Errors and Omissions product page as read on 2026-09-23; not an exhaustive eligibility list. |
| Coverage Features | Aon describes professional liability as addressing professional-services firms’ liability exposure and says it tailors coverage structures to a firm’s needs. It identifies E&O as a commonly used name for professional-liability insurance; actual policy terms are not stated. 3Company-reported. Aon’s marketing description of the brokerage/coverage area. The page is not the insurer’s policy form and does not establish an insured's entitlement to coverage. | Pie describes errors and omissions insurance, also called professional liability insurance, as covering legal fees, costs, and damages for claims that a business's advice or services caused harm, including claims of inaccurate advice, misrepresentation, negligence, or violation of good faith, but says it does not protect against criminal prosecution. 7Company-reported. Errors and Omissions product page as read on 2026-09-23; the issued policy controls actual insuring agreements and exclusions. |
| Limits and Retentions | The reviewed page does not state a buyer-specific limit, retention, deductible or other placement terms. Confirm these in the quote, bond or issued policy. 3Not publicly disclosed. Aon’s global practice page as reviewed 2026-09-30; no quote, bond form or issued policy was reviewed. | The reviewed page does not publish limits, deductibles, or premium ranges for errors and omissions coverage. 7Not publicly disclosed. Errors and Omissions product page as read on 2026-09-23. |
| Risk Services | Aon says its professional-services advisors use industry knowledge, insights, data and tools to support risk-management and human-capital decisions. This is a company-described advisory service, not a claim outcome or policy benefit. 3Company-reported. Company-reported advisory services on Aon’s global practice page; account-specific service scope is not stated. | Confirm in your quote. |
| How to Apply | Confirm in your quote. | Pie directs errors and omissions buyers to contact the company to start a quote through its website. 7Company-reported. Errors and Omissions product page as read on 2026-09-23. |
Related Pages for Aon vs Pie Insurance Professional Liability (E&O)
Professional Liability (E&O) Insurance Pages for Aon and Pie Insurance
Other Coverage Lines Compared for Aon vs Pie Insurance
Other Professional Liability (E&O) Insurance Provider Comparisons
Sources for Aon vs Pie Insurance
Sources About Aon
- Commercial Risk Solutions U.S. Brokerage Terms of Service. Aon; Lines 120–127: certain-program broker-of-record scope, consultation, application assistance, client signature and bind instruction, and account administration; lines 140–147: variable and contingent compensation, potential placement incentive, and client request route; lines 206–213: no price guarantee and surplus-lines limitations; lines 229–231: client insurer-notice duty unless separately agreed. Accessed 2026-09-29.
- Middle Market Clients. Aon; Lines 125–132: mid-sized organizations and middle-market framing; lines 165–173: dedicated practice and North America statement; lines 188–224: Commercial Risk capabilities. No numeric company-size cutoff or U.S.-only eligibility rule is stated on the reviewed page. Accessed 2026-09-29.
- Professional Services Practice. Aon; Named professional-services audiences and global advisory role, lines 125–128; line offerings and explanations lines 131–190; contact link lines 120–122. Global practice page; no U.S. state or account-specific placement schedule. Accessed 2026-09-30.
Sources About Pie Insurance
- Legal. Pie Insurance; State Licenses; footer disclosure naming producer and workers’ compensation versus third-party underwriting roles. Accessed 2026-09-15.
- Workers’ Comp Insurance For Small Businesses. Pie Insurance; Get a workers’ compensation quote online; insurance made for your small business; quote inputs; coverage description; quote-time and savings qualifications; AM Best link. Accessed 2026-09-16.
- Online Account Tutorial. Pie Insurance; Payment-method updates; instant and custom certificates; policy information; document access; agent-handled custom certificate qualification. Accessed 2026-09-15.
- Errors and Omissions Insurance. Pie Insurance; Errors and Omissions Insurance hero: also known as professional liability insurance...; professions that often carry E&O; What's typically covered by errors and omissions insurance? Inaccurate advice, Misrepresentation, Negligence, Violation of good faith; Make sure you're covered: Start now. Accessed 2026-09-23.
Sources for the Professional Liability (E&O) Insurance Guide
- FAQ: Professional liability insurance. Texas Department of Insurance; What’s professional liability coverage?; What types of damages…; What’s general liability insurance?; Do I need professional liability… if I have general liability…?; Is professional liability insurance required?; Can a client require…?; What’s the difference between occurrence policies and claims-made policies. Accessed 2026-09-16.
- Professional liability insurance. Insurance Information Institute; Opening paragraphs (professional services/advice and E&O name); Claims not covered by general liability; What types of businesses need professional liability insurance?; What’s covered… and what’s not (claims-made versus occurrence, defense and judgments, non-financial/intentional limits, BOP/in-home exclusion). Accessed 2026-09-16.
- Get business insurance. U.S. Small Business Administration; Six common types of business insurance table. Accessed 2026-09-16.
- Professional Liability – US Direct Errors and Omissions Insurance. Hiscox Inc. specimen; About this Policy / Coverage for Claims Made Against You; I.A Insuring Agreement; I.B Defense; I.C Settlement; II.A Notice of Claims; II.C Optional Extended Reporting Period; III.A, III.K, III.M, III.R, III.S Exclusions; IV.A–B Limits and Deductible; VI.O Professional Services; VI.U Wrongful Act. Accessed 2026-09-16.
