Harper vs Marsh McLennan Agency: How Do They Compare for Professional Liability (E&O) Insurance?

Harper describes line-by-line exclusion review and says its E&O limits are matched to client-contract requirements. MMA names E&O, A&E and lawyers professional lines. 3,4,8

What Is Harper Insurance?

Harper suits hard-to-place businesses such as contractors, care providers, manufacturers and transportation firms; standard small businesses seeking direct quotes should compare online carriers. Its workers’ compensation service helps classify payroll for audits. 1,2

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Read the Harper 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. 6,7

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. 9,10,11,12

Read the full coverage guide

Key Differences in Professional Liability (E&O) Insurance

Contract limits and exclusion review

Harper says it matches E&O limits to client-contract requirements and reads exclusions line by line because policies with the same limit can respond differently. MMA’s source names E&O, architect/engineer and lawyers professional offerings. If a contract sets an insurance limit, compare Harper’s described contract review with the actual MMA form, including its professional-services definition and exclusions. 3 8

One policy name or a specialist line

Harper says its “Professional Liability” and “Errors and Omissions” catalog entries refer to the same policy, with names varying by industry. MMA’s source separately names E&O, A&E and lawyers professional lines. A licensed professional should compare the policy form and definition of services, not rely on the catalogue label alone, and verify that the contract’s required limit and wording appear in the final certificate. 4 8

What to Confirm in Professional Liability (E&O) Insurance Quotes

  • How will Harper map the contract’s limit to exclusions and the proposed E&O form? 3 8
  • Which MMA specialist policy and service definition satisfy the required contract wording? 4 8

Harper and Marsh McLennan Agency 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.

Harper Review Score

-/ 10

Review Score

No reviews found

We found no customer star rating for Harper. Its Trustpilot page has 0 reviews, and BBB shows 0 customer reviews and 2 complaints.[4][6]

Read Harper reviews

Marsh McLennan Agency Review Score

8.2/ 10

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 reviews

Harper vs Marsh McLennan Agency Professional Liability (E&O) Compared

Harper vs Marsh McLennan Agency: Professional Liability (E&O) Insurance: documented features by provider

CriteriaHarper Professional Liability InsuranceMarsh McLennan Agency professional errors omissions (official overview)
Role in This Line

Harper places professional liability coverage as a broker, writing the policy around the applicant's actual services rather than underwriting it, and describes a specialist handling the placement. 3Company-reported. Professional liability page introduction and 'Why Harper' section.

Harper markets the identical policy under two catalogue entries, "Professional Liability" and "Errors and Omissions"; the E&O page states it is the same policy, just named what a given industry calls it. 4,5Company-reported. Coverage directory listing plus the E&O page's own description; a naming convention Harper states about itself, not a distinction between two products.

Marsh McLennan Agency describes arranging professional errors omissions for the audience stated on the cited product page. 8Company-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.

Issuing Insurer

The reviewed pages name pricing drivers (services performed, revenue, contract size) but do not name the issuing insurer or publish specific limit, retention or premium figures for this line. 3,4Not publicly disclosed. Checked both the professional-liability and errors-and-omissions pages on 2026-09-23; neither names a carrier or a limit figure.

Confirm in your quote.

Who It’s For

Harper targets consultants, agencies, tech firms and licensed professionals whose work product is advice, design or a decision, since general liability doesn't cover a client claiming that work caused a financial loss. 3Company-reported. Professional liability page introduction and FAQ distinguishing it from general liability.

Organizations seeking professional liability placement; source does not imply all professions share one policy. 8Company-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

Harper describes coverage for errors and omissions in the work itself, negligence allegations about professional judgment, and legal defense costs, with limits it says are matched to the client contracts that require the policy. 3,4Company-reported. Professional liability page's four coverage tiles; the E&O page adds that claims often surface a year or more after the work was delivered. The issued policy and its exclusions control actual scope.

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. 8Company-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

Confirm in your quote.

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. 8Not publicly disclosed. Only the cited marketing page was reviewed for published limit and retention information; no policy-form entitlement is inferred.

Risk Services

Harper says it reads a policy's exclusions line by line before a client buys, because two E&O policies with the same limit can respond very differently to the same claim. 3Company-reported. Professional liability page 'We know this' section; a described review practice, not an independently verified outcome.

Confirm in your quote.

How to Apply

You request a quote online or by phone; if a client contract requires E&O, Harper says it places coverage matching that requirement and issues the certificate the same day. 3Company-reported. Professional liability page quote form and FAQ 'My client contract requires E&O. What now?'.

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. 8Company-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 Harper vs Marsh McLennan Agency

Professional Liability (E&O) Pages for Harper and Marsh McLennan Agency

Other Coverage Lines Compared for Harper vs Marsh McLennan Agency

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Sources for Harper vs Marsh McLennan Agency

Sources About Harper

  1. Text Messaging Terms and Conditions. Harper Global Enterprises Inc.; Effective August 24, 2026; sections 1–3 (entity, consent and service messages), 5 (message costs), 9 (delivery) and 11 (coverage confirmation). Accessed 2026-09-15.
  2. We're Announcing $47M to Build the Insurance Company Every Business Deserves. Harper / Dakotah Rice; February 26, 2026 article: brokerage identity; AI-assisted submissions and follow-ups; 24–48-hour coverage statement; more than 165 underwriters; plans for additional direct appointments. Accessed 2026-09-15.
  3. Professional Liability Insurance. Harper; Know your coverage: What is Professional Liability insurance?; Errors & omissions, Negligence allegations, Legal defense, Contract-driven limits; Why Harper; FAQs on general liability vs. E&O, client E&O requirements, and pricing drivers. Accessed 2026-09-23.
  4. Errors and Omissions Insurance. Harper; Page states the product is 'Same policy as professional liability, just what your industry calls it'; describes financial-loss claims from professional services and late-arriving claims. Accessed 2026-09-23.
  5. What We Cover. Harper; Coverage directory list including Errors and Omissions and Professional Liability as separate catalogue entries. Accessed 2026-09-23.

Sources About Marsh McLennan Agency

  1. 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.
  2. 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.
  3. 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

  1. 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.
  2. 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.
  3. Get business insurance. U.S. Small Business Administration; Six common types of business insurance table. Accessed 2026-09-16.
  4. 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.

Updated . Spot, a product of Tools for Enlightenment, publishes this research and works in the commercial insurance market. The comparison applies the same criteria to both providers. Editorial policy. To suggest a correction, contact Spot with the page URL and supporting source.

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