Aon vs 
Berkshire Hathaway Specialty Insurance: How Do They Compare for Professional Liability (E&O) Insurance?
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 Berkshire Hathaway Specialty Insurance?
BHSI provides commercial and specialty insurance in the U.S., with product-specific industry lists that include healthcare, energy and technology. Online quote and application submissions are nonbinding. 4,5,6,7
Read the Berkshire Hathaway Specialty Insurance profile
Read the Berkshire Hathaway Specialty 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. 11,12,13,14
Key Differences in Professional Liability (E&O) Insurance
Form and Coverage Scope
Aon says it tailors professional-liability structures for professional-services firms, naming law, accounting and consulting practices as its audience. Berkshire Hathaway Specialty Insurance separates Lawyers Professional Liability from Miscellaneous Professional Liability and names staffing firms, management consultants, marketing firms and real-estate firms as targets for the latter. That product split can help a buyer identify which BHSI route to explore; ask Aon how its proposed form treats the same professional class. 3 9
Buyer Fit and Policy Terms
BHSI describes an in-house claims group experienced in complex, high-value claims and integrated with underwriting. Aon describes risk-management and human-capital advisory support, not a specific claims unit on its reviewed page. Neither summary states account limits or exclusions. If comparing claims support, ask both who handles a claim and how that team participates, then compare the actual insured-services definitions and policy terms. 3 9
What to Confirm in Professional Liability (E&O) Insurance Quotes
Review Scores
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
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 reviewsBerkshire Hathaway Specialty Insurance
Review Score
No reviews found
The public ratings for Berkshire Hathaway Specialty Insurance are low but thin: Trustpilot shows 2.1 out of 5 from 9 reviews and BBB shows 1 out of 5 from 6. Both mix travel and commercial customers, so we don't count them in a score.[5][7]
Read Berkshire Hathaway Specialty Insurance reviewsOffering Details
Aon vs Berkshire Hathaway Specialty Insurance: Professional Liability (E&O) Insurance: documented features by provider
| Criteria | Aon Professional Liability / E&O brokerage and risk-advisory offering | Professional First Professional Liability portfolio |
|---|---|---|
| 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. | Confirm in your quote. |
| 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. | Confirm in your quote. |
| 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. | The overview names staffing firms, management consultants, marketing firms and real-estate firms as targeted customers for Miscellaneous Professional Liability; it separately lists law-firm size bands for Lawyers Professional Liability. 9Company-reported. U.S. Professional First target statements; class-specific eligibility only. |
| 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. | BHSI’s U.S. Professional First overview identifies Lawyers Professional Liability and Miscellaneous Professional Liability alongside Technology E&O and Media Liability. 9,8Company-reported. Portfolio catalogue statement; the specific legal/professional class and form must be selected rather than treating the offerings as one policy. For architects, engineers and consultants, BHSI describes a professional-liability form that also addresses pollution, media, technology and cyber/network-security exposures. 10Company-reported. This is a specialized design-industry combined form, not generic E&O wording or proof that all risks receive each component. |
| 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. | Confirm in your quote. |
| 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. | The Professional First overview describes its in-house claims handling group as experienced in complex, high-value claims and integrated with underwriting. 9Company-reported. Company-reported portfolio-level claim-service description, not independently measured claims performance. |
Full Comparison
More Aon vs Berkshire Hathaway Specialty Insurance Comparisons
Other Professional Liability (E&O) Insurance Comparisons
Sources
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.
Berkshire Hathaway Specialty Insurance
- At A Glance. Berkshire Hathaway Specialty Insurance; United States section, zero-based PDF pages 49–53 (viewer pages 50–54): product/industry lists on pages 49–50; U.S. disclosure/version footer on page 53 is 2026-8-03 A. The 2026-09-14 A footer is on preceding European page 48, not the U.S. section. Accessed 2026-09-29.
- About Us. Berkshire Hathaway Specialty Insurance; About BHSI; company profile page re-opened through official site on 2026-09-28; company says it is part of National Indemnity group. Accessed 2026-09-28.
- Terms of Service. Berkshire Hathaway Specialty Insurance; Important Information Concerning Use of this Web Site, paragraphs 2–4; nonbinding submissions, contracted-agent authority, state variation, product availability and policy-specific terms. Accessed 2026-09-28.
- Public Disclosure — Berkshire Hathaway Specialty Insurance Singapore Branch. Berkshire Hathaway Specialty Insurance; Singapore branch public disclosure, Company Profile ¶¶ 1–2; direct page opened 2026-09-28. ¶ 1 identifies BHSIC as a Nebraska-domiciled direct P&C insurer; ¶ 2 states BHSIC is wholly owned by National Indemnity Company, itself wholly owned by Berkshire Hathaway Incorporated. Accessed 2026-09-28.
- Professional First Professional Liability. Berkshire Hathaway Specialty Insurance; U.S. Professional Liability landing page links Professional Liability / Network Security & Privacy, stand-alone Network Security & Privacy, and Architects, Engineers and Consultants PL, lines 6–15; footer copyright © 2026. Accessed 2026-09-28.
- Professional First Professional Liability Overview. Berkshire Hathaway Specialty Insurance; PDF pp.1–2: claims group and reporting; primary blended E&O/Cyber and stand-alone Cyber forms; line capacity statement; named Lawyers PL, Technology E&O, Miscellaneous PL, Media Liability, Network Security & Privacy; named technology-services target types and selection categories; dated 2026-06-03-A. Group capacity not a line policy limit. Source version: 2026-06-03-A. Accessed 2026-09-28.
- Professional First Architects, Engineers and Consultants Professional Liability. Berkshire Hathaway Specialty Insurance; Product Highlights: professional/pollution liability; media, technology and cyber/network security/privacy liability; direct breach/extortion expenses; risk services; primary/excess and project-specific product availability; target professions, lines 6–29. Its combined-form technology feature is not itself a standalone Tech E&O statement. Accessed 2026-09-28.
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.
