Heffernan Insurance Brokers vs 
Marsh McLennan Agency: How Do They Compare for Professional Liability (E&O) Insurance?
What Is Heffernan Insurance Brokers?
Heffernan’s technology practice targets mid- and late-stage, venture-funded and pre-IPO companies; early-stage firms seeking a direct online quote should compare digital providers. It also offers claims consulting and workers’ compensation support. 1,2,3
Read the Heffernan Insurance Brokers profile
Read the Heffernan Insurance Brokers Professional Liability (E&O) Insurance page
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. 5,6
Read the Marsh McLennan Agency profile
Read the Marsh McLennan Agency 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
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. 4 7
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. 4 7
What Should You Confirm in Heffernan Insurance Brokers and Marsh McLennan Agency Professional Liability (E&O) Insurance Quotes?
Heffernan Insurance Brokers and Marsh McLennan Agency 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.
Heffernan Insurance Brokers Review Score
Review Score
1 rated source
Heffernan’s available review sample is small and local, with a low Google rating for one office. Check the team that would actually serve your business.[6][7][8]
Read Heffernan Insurance Brokers reviewsMarsh 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 reviewsHeffernan Insurance Brokers vs Marsh McLennan Agency Professional Liability (E&O) Compared
Heffernan Insurance Brokers vs Marsh McLennan Agency: Professional Liability (E&O) Insurance: documented features by provider
| Criteria | Heffernan Professional Errors and Omissions Brokerage | Marsh McLennan Agency professional errors omissions (official overview) |
|---|---|---|
| Role in This Line | Heffernan lists errors and omissions among the coverages its small-business division places for clients, shopping the line with insurers rather than underwriting it. 4Company-reported. Small Business Insurance page as read on 2026-09-23; no dedicated professional-E&O product page was found. | Marsh McLennan Agency describes arranging professional errors omissions for the audience stated on the cited product page. 7Company-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. |
| Who It’s For | 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. 4Company-reported. 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. | Organizations seeking professional liability placement; source does not imply all professions share one policy. 7Company-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. |
| Coverage Features | 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. 4Company-reported. Small Business Insurance page as read on 2026-09-23; the page does not list specific exclusions, claims-made versus occurrence form, or endorsements. | 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. 7Company-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. |
| Limits and Retentions | The reviewed page does not publish limits, retentions, or premium ranges for errors and omissions coverage. 4Not publicly disclosed. Small Business Insurance page as read on 2026-09-23. | 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. 7Not publicly disclosed. Only the cited marketing page was reviewed for published limit and retention information; no policy-form entitlement is inferred. |
| How to Apply | 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. 4Company-reported. Small Business Insurance page as read on 2026-09-23. | 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. 7Company-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. |
Related Pages for Heffernan Insurance Brokers vs Marsh McLennan Agency
Professional Liability (E&O) Pages for Heffernan Insurance Brokers and Marsh McLennan Agency
Other Coverage Lines Compared for Heffernan Insurance Brokers vs Marsh McLennan Agency
Other Professional Liability (E&O) Insurance Provider Comparisons
Sources for Heffernan Insurance Brokers vs Marsh McLennan Agency
Sources About Heffernan Insurance Brokers
- Our Story. Heffernan Insurance Brokers; Headquartered in Walnut Creek; nationwide presence; founded 1988; employee owned; niche practices including technology. Accessed 2026-09-16.
- Technology Company Insurance. Heffernan Insurance Brokers; Pre-IPO and venture-funded heading; mid to late stage specialization; global expansion copy; self-insurance strategies; Key Markets list; Why Heffernan broker history; Joseph Talmadge practice leader; FAQ. Accessed 2026-09-16.
- Heffernan Business Insurance Brokerage. Heffernan Insurance Brokers; Forward-Thinking Business Insurance: basic coverages (general liability, commercial property and auto, workers’ compensation); corporate and executive protection (EPL, D&O, fiduciary responsibility, cyber, kidnap and ransom); alternative risk capabilities; claims, loss control and risk-management services; industry practice links including Technology and Claims Advocacy. Accessed 2026-09-16.
- 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.
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 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.
