Marsh McLennan Agency vs 
Zurich U.S.: How Do They Compare for Professional Liability (E&O) Insurance?
What Is Marsh McLennan Agency?
Marsh McLennan Agency provides business insurance and employee health and benefits, alongside retirement, wealth, and private-client services across the United States and Canada. Its US small-business page lists six common coverage types and directs buyers to request a personalized quote by phone; the insurer and terms for a specific placement must be confirmed in the proposal. 1,2
Read the Marsh McLennan Agency profile
Read the Marsh McLennan Agency Professional Liability (E&O) Insurance page
Zurich U.S. Business Insurance: Products, Access, and Claims
Zurich U.S. serves Middle Market businesses and large or national accounts with commercial property-casualty and specialty insurance. Buyers can explore product lines and work through an agent or broker; the insurer named on a quote or policy identifies which Zurich company underwrites that coverage. 4,5
Read the Zurich U.S. 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. 7,8,9,10
Key Differences in Professional Liability (E&O) Insurance
Program Structure and Named Professional Lines
Zurich describes Pro Plus as a modular suite that brings coverages together in one policy and says admitted E&O is available in most states. Marsh McLennan Agency instead identifies E&O alongside separate architects-and-engineers and lawyers professional lines. If you want to place E&O with other coverages, ask Zurich which modules would appear together; if your work is in a named profession, ask MMA which specialist line applies. Neither overview establishes the endorsements or limits in an individual quote. 3 6
Documented Claim Scope and Service
Zurich describes E&O claims involving negligence, mistakes, or failure to deliver promised services, including defense costs, court fees, settlements, and judgments. It also identifies claims specialists who review claims under policy terms with legal counsel coordination. MMA’s overview names its professional lines but gives no comparable claims-handling steps. For a buyer, that means Zurich’s published material is more specific about its E&O claim process; ask MMA who handles a claim and what legal coordination is included before weighing service. 3 6
What to Confirm in Professional Liability (E&O) Insurance Quotes
Marsh McLennan Agency and Zurich U.S. 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.
Marsh McLennan Agency Review Score
Review Score
2 rated sources
There are almost no public customer reviews of Marsh McLennan Agency (MMA). Trustpilot shows 3.2 out of 5, but from a single review, and BBB shows an A grade with four complaints closed in three years.[8][9][1]
Read Marsh McLennan Agency reviewsZurich U.S. Review Score
Review Score
No reviews found
The available Zurich review evidence is mixed and comes from distinct populations: a car-rental-business editorial rating, broad global and U.S. review-platform snapshots, and a BBB business-profile grade. These are not a representative measure of every Zurich commercial policy or claim.[1][4][5][6][7]
Read Zurich U.S. reviewsMarsh McLennan Agency vs Zurich U.S. Professional Liability (E&O) Compared
Marsh McLennan Agency vs Zurich U.S.: Professional Liability (E&O) Insurance: documented features by provider
| Criteria | Marsh McLennan Agency professional errors omissions (official overview) | Zurich Errors & Omissions / Professional Liability |
|---|---|---|
| Role in This Line | Marsh McLennan Agency describes arranging professional errors omissions for the audience stated on the cited product page. 3Company-reported. professional errors omissions marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement. | Confirm in your quote. |
| Who It’s For | Organizations seeking professional liability placement; source does not imply all professions share one policy. 3Company-reported. professional errors omissions marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement. | Zurich names technology, manufacturing and third-party service providers among targeted E&O classes. 6Company-reported. Zurich U.S. brand; exact underwriting company may vary by policy and state; professional errors and omissions; United States. Company-reported product description; actual coverage, underwriting, limits and state availability are governed by issued policy terms. |
| Coverage Features | The cited product page describes E&O and named specialist professional lines, including architects and engineers and lawyers professional liability; the overview does not treat them as one form. Marketing description only; actual coverage, exclusions, conditions, limits, and availability depend on the issued policy and jurisdiction. 3Company-reported. professional errors omissions marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement. | Zurich says E&O can address professional-service negligence, mistakes or failure to deliver promised services, including defense costs, court fees, settlements and judgments. 6Company-reported. Zurich U.S. brand; exact underwriting company may vary by policy and state; professional errors and omissions; United States. Company-reported product description; actual coverage, underwriting, limits and state availability are governed by issued policy terms. Zurich’s Pro Plus is a modular suite of coverages in one policy; admitted E&O coverage is available in most states. 6Company-reported. Zurich U.S. brand; exact underwriting company may vary by policy and state; professional errors and omissions; United States. Company-reported product description; actual coverage, underwriting, limits and state availability are governed by issued policy terms. |
| Limits and Retentions | The cited overview does not set a universal limit or retention for this line. Ask for the proposed policy form, limits, retentions, exclusions, and conditions in the quote. 3Not publicly disclosed. Only the cited marketing page was reviewed for published limit and retention information; no policy-form entitlement is inferred. | Confirm in your quote. |
| How to Apply | The page invites organizations to contact a Marsh McLennan Agency adviser or specialist to discuss placement. The page does not establish a quote, bind, or coverage-effective timeline. 3Company-reported. professional errors omissions marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement. | Confirm in your quote. |
| Claims Support | Confirm in your quote. | Zurich describes E&O claims specialists and underwriters and says claims are reviewed under policy terms with legal counsel coordination. 6Company-reported. Zurich U.S. brand; exact underwriting company may vary by policy and state; professional errors and omissions; United States. Company-reported product description; actual coverage, underwriting, limits and state availability are governed by issued policy terms. |
Related Pages for Marsh McLennan Agency vs Zurich U.S.
Professional Liability (E&O) Pages for Marsh McLennan Agency and Zurich U.S.
Other Coverage Lines Compared for Marsh McLennan Agency vs Zurich U.S.
Other Professional Liability (E&O) Insurance Provider Comparisons
Sources for Marsh McLennan Agency vs Zurich U.S.
Sources About Marsh McLennan Agency
- Who We Are. Marsh McLennan Agency; Lines 193-195: ‘a business of Marsh’ and company-listed service lines across US and Canada. This does not establish the legal entity for an account, corporate ownership chart, or insurer role. Accessed 2026-09-29.
- Small Business Insurance Solutions. Marsh McLennan Agency; Lines 205-207: small-business audience and call invitation; lines 224-249 list six coverage categories and short descriptions; line 264 is an embedded form whose function is not stated. No form submitted. Accessed 2026-09-29.
- Executive and Professional Liability | MMA. Marsh McLennan Agency; E&O, architects and engineers, and lawyers professional lines are named in the policy suite. Accessed 2026-09-30.
Sources About Zurich U.S.
- About Us | Zurich U.S. | Commercial Insurance. Zurich U.S.; About Zurich U.S.; customer and industry description; FAQ on U.S. product focus. Accessed 2026-09-28.
- Agents and Brokers | Zurich U.S. Zurich U.S.; Agent/broker route and locator. Accessed 2026-09-28.
- Errors and Omissions Insurance – E&O | Zurich Insurance. Zurich U.S.; Pro Plus coverage, targeted classes, policy structure, claims and underwriting. Accessed 2026-09-28.
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.
