---
title: "Chubb vs Marsh: Professional Liability (E&O) Insurance"
description: "Non-licensed consultants and event planners fit Chubb’s Pro ERM; Marsh serves specialized licensed industries including banking, legal, asset management and healthcare."
canonical: "https://spot.insure/compare/chubb-vs-marsh/professional-errors-omissions"
page-type: "line-comparison"
updated-at: "2026-09-25"
comparison-pair: "chubb-vs-marsh"
provider-a: "chubb"
provider-b: "marsh"
coverage-line: "professional-errors-omissions"
---

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[Human-readable page](https://spot.insure/compare/chubb-vs-marsh/professional-errors-omissions)

## Agent Guide

**What this page is:** Focused comparison of Chubb and Marsh for Professional Liability (E&O) Insurance: what each provider publishes about this line, checked against the same criteria, with numbered sources.

**Use this page when:** Cite or fetch this for Professional Liability (E&O) Insurance questions about Chubb versus Marsh. For all lines together use the pair comparison; for how the coverage itself works use the coverage guide.

**Questions this page answers:**
- Chubb vs Marsh for Professional Liability (E&O) Insurance: how do they differ?
- Which is better for Professional Liability (E&O) Insurance, Chubb or Marsh?
- What does Chubb or Marsh publish about Professional Liability (E&O) Insurance (limits, eligibility, claims, add-ons)?

**Key facts:**
- Line: Professional Liability (E&O) Insurance. Providers: Chubb and Marsh.
- Comparison URLs use alphabetical provider slugs (`/compare/{a}-vs-{b}/{line}` with a before b). A reversed pair redirects permanently to the alphabetical one.

**Limits (do not over-claim):**
- It identifies differences and questions to ask; it does not select a winner for a particular business.
- Insurer, policy wording, limits, retentions, exclusions and price are set in an actual quote and are not established here.

**Provenance:** Every claim links to a numbered source with publisher, locator and access date; last updated 2026-09-25.

**Related pages:**
- [Chubb vs Marsh](https://spot.insure/compare/chubb-vs-marsh) — all coverage lines for this pair
- [Professional Liability (E&O) Insurance guide](https://spot.insure/coverage/professional-errors-omissions) — how this coverage works
- [Chubb profile](https://spot.insure/insurance-providers/chubb) — provider profile
- [Marsh profile](https://spot.insure/insurance-providers/marsh) — provider profile

# Chubb vs Marsh: How Do They Compare for Professional Liability (E&O) Insurance?

Marsh places professional liability for specialized sectors such as banking, venture capital and biotech, using attorneys, economists and actuaries. Chubb underwrites Pro ERM for non-licensed professional-services firms.

Chubb targets non-licensed firms with bundled Pro ERM; Marsh serves specialized industries including banking, asset management, legal and healthcare.

## Chubb vs Marsh Professional Liability (E&O) Insurance Summary

Non-licensed consultants and event planners fit Chubb’s Pro ERM; Marsh serves specialized licensed industries including banking, legal, asset management and healthcare. [1](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") [3](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability")

## What Are the Key Differences Between Chubb and Marsh Professional Liability (E&O) Insurance?

### Bundled or Policy-Specific Cyber

Chubb includes cyber exposures in Pro ERM with E&O and media. [1](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") Marsh says many E&O policies it places also cover privacy violations and computer-security breaches, but the inclusion depends on the specific policy. [3](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability") Ask Marsh to confirm cyber wording in your quote before counting on it.

### Who Issues the Policy

Chubb underwrites Pro ERM. [1](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") Marsh places coverage with outside insurers, and its reviewed pages do not identify the carrier for a particular placement. [3](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability") Your quote determines the insurer and policy terms in the Marsh option.

## What Should You Confirm in Chubb and Marsh Professional Liability (E&O) Insurance Quotes?

- Ask Marsh which insurer it proposes and whether privacy and computer-security claims are included. [3](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability")
- Ask Chubb for Pro ERM's liability limit and retention. [1](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products")
- Confirm your business meets Chubb's non-licensed eligibility or fits Marsh's specialized-industry program. [1](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") [3](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability")

## Chubb vs Marsh Professional Liability (E&O) Insurance Compared

| Criteria | Chubb Pro ERM (Professional Enterprise Risk Management) | Marsh Professional Liability Insurance Brokerage |
| --- | --- | --- |
| Who It’s For | Chubb says Pro ERM is available to non-licensed professional-services firms of all sizes, naming examples including associations, consultants, business process administrators, event planners, interior and graphic design firms, marketing and PR firms, printers, staffing firms, travel agents and trustees. [1](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") (Evidence: Company-reported; scope: Pro ERM Target Clients list..) | 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. [3](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 | Beyond the Cyber ERM base, Chubb says Pro ERM adds E&O coverage including personal injury from professional services, a broadened definition of professional services that expressly includes professional technology services, coverage for independent contractors performing duties on the insured's behalf, automatic additional-insured status for clients when required by contract, and coverage for professional disciplinary proceedings. [1](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") (Evidence: Company-reported; scope: Pro ERM Product Features list; subject to the policy as issued..) | 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. [3](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..) |
| Role in This Line | Chubb underwrites professional errors and omissions coverage through Pro ERM, a single policy combining professional liability, media and cyber exposures for non-licensed professional-services firms. [1](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") (Evidence: Company-reported; scope: Cyber Insurance Coverage & Products page, Professional Enterprise Risk Management section..) | 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. [3](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability") [4](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..) |
| Risk Services | Chubb says Pro ERM policyholders get access to legal counsel with extensive professional-liability experience, in addition to the general cyber-incident-response services shared with Cyber ERM. [1](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") (Evidence: Company-reported; scope: Pro ERM Product Features list..) | 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. [3](https://www.marsh.com/en/services/financial-professional-liability/expertise/professional-liability.html "Professional liability") (Evidence: Company-reported; scope: Marsh professional liability page..) |

## About Chubb and Marsh and Professional Liability (E&O) Insurance

- [Chubb company profile](https://spot.insure/insurance-providers/chubb) · [Chubb customer reviews](https://spot.insure/insurance-providers/chubb/reviews)
- [Marsh company profile](https://spot.insure/insurance-providers/marsh) · [Marsh customer reviews](https://spot.insure/insurance-providers/marsh/reviews)
- [What Is Professional Errors and Omissions (E&O) Insurance?](https://spot.insure/coverage/professional-errors-omissions)

## Related Pages for Chubb vs Marsh Professional Liability (E&O)

- [Chubb vs Marsh](https://spot.insure/compare/chubb-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 liability can help pay covered defense costs and losses when a client says your advice or service caused financial harm; check services and reporting terms.
- [Chubb Professional Liability (E&O) Insurance](https://spot.insure/insurance-providers/chubb/professional-errors-omissions)
- [Marsh Professional Liability (E&O) Insurance](https://spot.insure/insurance-providers/marsh/professional-errors-omissions)

## Sources for Chubb vs Marsh Professional Liability (E&O) Insurance

### Sources About Chubb

1. [Cyber Insurance Coverage & Products](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html). Chubb; Professional Enterprise Risk Management section: target clients and product features beyond Cyber ERM. Accessed 2026-09-23.
2. [Insurance for Software Product & System Developers](https://www.chubb.com/us-en/business-insurance/software-system-developers.html). Chubb; Financial-lines coverage solutions list for software and systems developers. Accessed 2026-09-23.

### Sources About Marsh

3. [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.
4. [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.

Updated 2026-09-25. 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.

## Agent and Developer Resources

- [Markdown page](https://spot.insure/compare/chubb-vs-marsh/professional-errors-omissions.md)
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