Heffernan vs Marsh Mclennan Agency: Professional Liability / E&O Insurance

Marsh McLennan Agency has organizations talk to an adviser about placement, including specialist lines for architects and lawyers. Heffernan Insurance Brokers aims its small-business division at sole proprietors and growing companies.

Kearny Risk organizes these comparisons for firms whose advice, content or technology creates professional exposures.Research updated 2026-10-01

Heffernan’s small-business division lists E&O for client financial-loss claims and describes serving sole proprietors through fast-growing firms across several industries; this is division-level, not E&O-specific eligibility. MMA names E&O, A&E and lawyers lines.

What Are the Key Differences Between Heffernan Insurance Brokers and Marsh McLennan Agency Professional Liability (E&O) Insurance?

Coverage listing and buyer scope

Heffernan’s small-business page lists E&O among its coverages and describes the division as serving sole proprietors through fast-growing firms across industries such as construction, healthcare, hospitality, technology and transportation. That audience statement is division-wide, not an E&O eligibility guarantee. MMA’s source names general E&O alongside A&E and lawyers professional products, giving a buyer separate categories to compare with its occupation. [1] [4]

Line-specific trigger and quote preparation

Heffernan describes E&O as addressing client financial loss from a problem with a company’s product or service and directs small-business buyers to request a quote from the division. MMA’s locator identifies the professional suite by line. Share service descriptions and client contracts with both teams, then ask which carrier form and professional-services definition apply to your specific business. [1] [4]

What Should You Confirm in Heffernan Insurance Brokers and Marsh McLennan Agency Professional Liability (E&O) Insurance Quotes?

  • Does Heffernan offer E&O for your specific services and industry, and what client-loss definition applies? [1] [4]
  • Which MMA general or specialist line fits the profession and what underwriting information is needed? [1] [4]

Areas of coverage

Heffernan Insurance Brokers

  • role: Heffernan lists errors and omissions among the coverages its small-business division places for clients, shopping the line with insurers rather than underwriting it. Small Business Insurance page as read on 2026-09-23; no dedicated professional-E&O product page was found.company-reportedSource ↗
  • coverage: Heffernan describes errors and omissions coverage as protecting against claims for problems with a company's product or service that result in a financial loss to a client. Small Business Insurance page as read on 2026-09-23; the page does not list specific exclusions, claims-made versus occurrence form, or endorsements.company-reportedSource ↗
  • eligibility: Heffernan's small-business division says it serves sole proprietors through fast-growing companies across industries including construction, food, health care, hospitality, nonprofits, real estate, technology, transportation, and vintners and growers, and will custom-design a package for industries not listed. Small Business Insurance page as read on 2026-09-23; not exclusively E&O-specific, but describes the buyer base for the page listing this coverage.company-reportedSource ↗
  • limits: The reviewed page does not publish limits, retentions, or premium ranges for errors and omissions coverage. Small Business Insurance page as read on 2026-09-23.not-disclosedSource ↗
  • application: Heffernan directs small-business buyers to contact the firm's small-business division to request a quote and says it will research and build a custom package for industries not already listed. Small Business Insurance page as read on 2026-09-23.company-reportedSource ↗

Marsh McLennan Agency

  • role: Marsh McLennan Agency describes arranging professional errors omissions for the audience stated on the cited product page. 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.company-reportedSource ↗
  • eligibility: Organizations seeking professional liability placement; source does not imply all professions share one policy. 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.company-reportedSource ↗
  • coverage: 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. 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.company-reportedSource ↗
  • application: 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. 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.company-reportedSource ↗
  • limits: 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. Only the cited marketing page was reviewed for published limit and retention information; no policy-form entitlement is inferred.not-disclosedSource ↗

Sources reviewed

  1. 01
    Small Business Insurance

    Heffernan Insurance Brokers · The types of coverage we can provide include... Errors and omissions protects against claims for problems with your product or service that result in a financial loss; industries served list; Specialty Programs; contact for custom-designed packages · accessed 2026-09-23

  2. 02
    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

  3. 03
    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

  4. 04
    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

  5. 05
    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

  6. 06
    Get business insurance

    U.S. Small Business Administration · Six common types of business insurance table · accessed 2026-09-16

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