---
title: "Harper vs Marsh Professional Liability (E&O) Insurance"
description: "Harper places professional liability coverage as a broker, writing the policy around the applicant's actual services. Marsh's financial and professional liability practice places professional liability (errors and omissions) insurance; MMA also places."
canonical: "https://spot.insure/compare/harper-vs-marsh/professional-errors-omissions"
page-type: "line-comparison"
updated-at: "2026-09-23"
---

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# Harper vs Marsh Professional Liability (E&O) Insurance

Harper places professional liability coverage as a broker, writing the policy around the applicant's actual services. Marsh's financial and professional liability practice places professional liability (errors and omissions) insurance; MMA also places.

## Research Scope and Use

Use this comparison to evaluate Harper and Marsh for Professional Liability (E&O) Insurance against the same documented criteria. It identifies differences and questions to confirm; it does not select a winner for a particular business. Offering claims are what each provider publishes about this line unless marked otherwise. “Not found” describes the evidence reviewed, not proof that a feature is unavailable. Confirm the insurer, policy wording, limits, retentions, exclusions and cost in an actual quote.

## Summary

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. Marsh's financial and professional liability practice places professional liability (errors and omissions) insurance; MMA also places E&O coverage within its executive and professional liability practice for. [10](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability") [3](https://www.harperinsure.com/coverages/professional-liability "Professional Liability Insurance")

## What Is Harper Insurance?

Harper is a commercial insurance brokerage for businesses with complex risks. Its specialists use AI tools to gather information, seek quotes from insurers and help customers manage coverage. [1](https://www.harperinsure.com/sms-terms "Text Messaging Terms and Conditions") [2](https://www.harperinsure.com/insurance-insights/harper-45m-funding-announcement "We're Announcing $47M to Build the Insurance Company Every Business Deserves")

[Harper profile](https://spot.insure/insurance-providers/harper)

## What Is Marsh?

Marsh is a global insurance broker and risk advisor. In the United States it places coverage through core Marsh teams and through Marsh McLennan Agency for many middle-market buyers, including technology, cyber, property, casualty and benefits programs. [6](https://www.marsh.com/en/home.html "Marsh | Leader in risk, strategy, people, and investments") [7](https://www.marsh.com/content/dam/marsh/Documents/PDF/US-en/us-client-compensation-guide.pdf "Compensation guide for US clients") [8](https://www.marsh.com/en/services/marsh-mclennan-agency.html "Marsh McLennan Agency (MMA)") [9](https://www.marsh.com/en/industries/technology.html "Technology | Insurance Broking & Risk Management")

[Marsh profile](https://spot.insure/insurance-providers/marsh)

## What Is Professional Errors and Omissions (E&O) Insurance?

Professional errors and omissions (E&O) insurance, also called professional liability insurance, addresses claims that professional services or advice caused a client financial loss. What's covered depends on the services actually scheduled in the policy, not the product label alone. [12](https://www.tdi.texas.gov/commercial/pl-faq.html "FAQ: Professional liability insurance") [13](https://www.iii.org/article/professional-liability-insurance "Professional liability insurance") [14](https://www.sba.gov/counseling/launch-your-business/#business-insurance "Get business insurance") [15](https://www.hiscox.com/documents/pl-sample-policy-wording.pdf "Professional Liability – US Direct Errors and Omissions Insurance")

## Key Differences in Professional Liability (E&O) Insurance

### Placement Versus Underwriting

The records show 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. [3](https://www.harperinsure.com/coverages/professional-liability "Professional Liability Insurance") Marsh's financial and professional liability practice places professional liability (errors and omissions) insurance; MMA also places E&O coverage within its executive and professional liability practice for middle-market clients.

Marsh says professional liability coverage can protect a company against liability and defense costs from a claim alleging an error, omission or negligence in performing professional services, and that many policies also cover privacy violations and computer security breaches. [10](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability") (Evidence: Company-reported; scope: Marsh professional liability page opening description; illustrative policy description, not a specific policy form..)

### Insuring Grants Compared

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](https://www.harperinsure.com/coverages/professional-liability "Professional Liability Insurance") Marsh says professional liability coverage can protect a company against liability and defense costs from a claim alleging an error, omission or negligence in performing professional services, and that many policies also cover privacy violations and computer security. [10](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability")

### What Comes With the Policy

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. [3](https://www.harperinsure.com/coverages/professional-liability "Professional Liability Insurance") Marsh says it employs attorneys, economists and actuaries alongside coverage specialists to assess a client's professional liability exposure from multiple angles, given the complexity of these risks. [10](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability")

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

- Ask Harper which insurer would issue this professional errors omissions quote if the record does not name one. [3](https://www.harperinsure.com/coverages/professional-liability "Professional Liability Insurance")
- Ask Marsh which insurer would issue its professional errors omissions quote. [10](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability")
- Compare Harper and Marsh limits, deductibles and any bundle with other lines before you bind. [3](https://www.harperinsure.com/coverages/professional-liability "Professional Liability Insurance") [10](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability")

## Offering Details

| Criteria | Harper Professional Liability Insurance | Marsh Professional Liability Insurance Brokerage |
| --- | --- | --- |
| 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. [3](https://www.harperinsure.com/coverages/professional-liability "Professional Liability Insurance") (Evidence: Company-reported; scope: Professional liability page introduction and 'Why Harper' section..)<br><br>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](https://www.harperinsure.com/coverages/errors-and-omissions "Errors and Omissions Insurance") [5](https://www.harperinsure.com/coverages "What We Cover") (Evidence: Company-reported; scope: 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's financial and professional liability practice places professional liability (errors and omissions) insurance; MMA also places E&O coverage within its executive and professional liability practice for middle-market clients. [10](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability") [11](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Expert Executive and Professional Liability Insurance") (Evidence: Company-reported; scope: Marsh professional liability page and MMA executive and professional liability page..) |
| 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](https://www.harperinsure.com/coverages/professional-liability "Professional Liability Insurance") [4](https://www.harperinsure.com/coverages/errors-and-omissions "Errors and Omissions Insurance") (Evidence: Not publicly disclosed; scope: Checked both the professional-liability and errors-and-omissions pages on 2026-09-23; neither names a carrier or a limit figure..) | The reviewed pages do not name a specific professional liability insurer. [10](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability") [11](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Expert Executive and Professional Liability Insurance") (Evidence: Not publicly disclosed; scope: Marsh professional liability page and MMA executive and professional liability page as read on 2026-09-23..) |
| 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. [3](https://www.harperinsure.com/coverages/professional-liability "Professional Liability Insurance") (Evidence: Company-reported; scope: Professional liability page introduction and FAQ distinguishing it from general liability..) | Marsh names specialized industries its professional liability experts serve, including banking and broker/dealers, insurance companies and asset managers, merchant banking and venture capital, accountants, attorneys, architects and engineers, media and entertainment, technology, and healthcare and biotechnology. [10](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability") (Evidence: Company-reported; scope: Marsh professional liability page, What We Offer section..) |
| 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](https://www.harperinsure.com/coverages/professional-liability "Professional Liability Insurance") [4](https://www.harperinsure.com/coverages/errors-and-omissions "Errors and Omissions Insurance") (Evidence: Company-reported; scope: 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..) | Marsh says professional liability coverage can protect a company against liability and defense costs from a claim alleging an error, omission or negligence in performing professional services, and that many policies also cover privacy violations and computer security breaches. [10](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability") (Evidence: Company-reported; scope: Marsh professional liability page opening description; illustrative policy description, not a specific policy form..) |
| 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. [3](https://www.harperinsure.com/coverages/professional-liability "Professional Liability Insurance") (Evidence: Company-reported; scope: Professional liability page 'We know this' section; a described review practice, not an independently verified outcome..) | Marsh says it employs attorneys, economists and actuaries alongside coverage specialists to assess a client's professional liability exposure from multiple angles, given the complexity of these risks. [10](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability") (Evidence: Company-reported; scope: Marsh professional liability page..) |
| 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. [3](https://www.harperinsure.com/coverages/professional-liability "Professional Liability Insurance") (Evidence: Company-reported; scope: Professional liability page quote form and FAQ 'My client contract requires E&O. What now?'..) | Not described in the reviewed sources. |

## Full Comparison

- [Harper vs Marsh](https://spot.insure/compare/harper-vs-marsh): all coverage lines, business roles, service and claims.
- [What Is Professional Errors and Omissions (E&O) Insurance?](https://spot.insure/coverage/professional-errors-omissions): Professional E&O insurance addresses claims that a mistake in your advice or services caused a client financial loss.
- [Harper vs Marsh Builders Risk Insurance](https://spot.insure/compare/harper-vs-marsh/builders-risk)
- [Harper vs Marsh Commercial Property Insurance](https://spot.insure/compare/harper-vs-marsh/commercial-property)
- [Harper vs Marsh Cyber Insurance](https://spot.insure/compare/harper-vs-marsh/cyber)
- [Harper vs Marsh Surety Bonds](https://spot.insure/compare/harper-vs-marsh/surety-bonds)
- [Harper vs Marsh Workers’ Compensation Insurance](https://spot.insure/compare/harper-vs-marsh/workers-compensation)
- [Alliance Risk vs Harper Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-harper/professional-errors-omissions)
- [Alliance Risk vs Marsh Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-marsh/professional-errors-omissions)
- [At-Bay vs Harper Professional Liability (E&O) Insurance](https://spot.insure/compare/at-bay-vs-harper/professional-errors-omissions)
- [At-Bay vs Marsh Professional Liability (E&O) Insurance](https://spot.insure/compare/at-bay-vs-marsh/professional-errors-omissions)
- [Beazley vs Harper Professional Liability (E&O) Insurance](https://spot.insure/compare/beazley-vs-harper/professional-errors-omissions)
- [Beazley vs Marsh Professional Liability (E&O) Insurance](https://spot.insure/compare/beazley-vs-marsh/professional-errors-omissions)

## Sources

### Harper

1. [Text Messaging Terms and Conditions](https://www.harperinsure.com/sms-terms). 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](https://www.harperinsure.com/insurance-insights/harper-45m-funding-announcement). 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](https://www.harperinsure.com/coverages/professional-liability). 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](https://www.harperinsure.com/coverages/errors-and-omissions). 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](https://www.harperinsure.com/coverages). Harper; Coverage directory list including Errors and Omissions and Professional Liability as separate catalogue entries. Accessed 2026-09-23.

### Marsh

6. [Marsh | Leader in risk, strategy, people, and investments](https://www.marsh.com/en/home.html). Marsh; Hero and capability tiles; FAQ: What does Marsh do?; industries served; Is Marsh the same as Marsh McLennan? January 2026 brand change. Accessed 2026-09-16.
7. [Compensation guide for US clients](https://www.marsh.com/content/dam/marsh/Documents/PDF/US-en/us-client-compensation-guide.pdf). Marsh; US broking segments; broker role; retail commissions, client fees, wholesale, insurer consulting, contingent and supplemental commissions; Marsh LLC and Marsh USA LLC; page 3: broker role and Marsh & McLennan Agency segment; page 7: copyright © 2024 Marsh LLC. Accessed 2026-09-16.
8. [Marsh McLennan Agency (MMA)](https://www.marsh.com/en/services/marsh-mclennan-agency.html). Marsh; Middle-market US organizations; wholly-owned subsidiary; business insurance, employee health and benefits, retirement, private client. Accessed 2026-09-16.
9. [Technology | Insurance Broking & Risk Management](https://www.marsh.com/en/industries/technology.html). Marsh; Opening Technology Practice description; practice links including data center insurance, fintech and Stratus; Talk to us. Accessed 2026-09-16.
10. [Professional liability](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html). Marsh; Opening description; What We Offer: specialized industries served (banking, insurance/asset managers, merchant banking/venture capital, accountants/attorneys/architects/engineers, media/communications/entertainment, technology, healthcare/biotechnology). Accessed 2026-09-23.
11. [Expert Executive and Professional Liability Insurance](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html). Marsh McLennan Agency; Our policies include D&O, E&O, EPL, commercial crime/fidelity, network security privacy risk/cyber, fiduciary, media liability, IP, architects and engineers, lawyers professional, and kidnap and ransom. Accessed 2026-09-23.

### Professional Liability (E&O) Insurance Guide

12. [FAQ: Professional liability insurance](https://www.tdi.texas.gov/commercial/pl-faq.html). 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.
13. [Professional liability insurance](https://www.iii.org/article/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.
14. [Get business insurance](https://www.sba.gov/counseling/launch-your-business/#business-insurance). U.S. Small Business Administration; Six common types of business insurance table. Accessed 2026-09-16.
15. [Professional Liability – US Direct Errors and Omissions Insurance](https://www.hiscox.com/documents/pl-sample-policy-wording.pdf). 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 2026-09-23. 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](https://spot.insure/editorial-policy). To suggest a correction, [contact Spot](https://spot.insure/contact) with the page URL and supporting source.

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