---
title: "Chubb vs Harper: Professional Liability (E&O) Insurance"
description: "Harper serves advice, design and decision businesses and says it can issue a certificate the same day when a client contract requires E&O; Chubb Pro ERM targets non-licensed firms and lists disciplinary and personal-injury coverage."
canonical: "https://spot.insure/compare/chubb-vs-harper/professional-errors-omissions"
page-type: "line-comparison"
updated-at: "2026-09-25"
comparison-pair: "chubb-vs-harper"
provider-a: "chubb"
provider-b: "harper"
coverage-line: "professional-errors-omissions"
---

Agents: connect to Spot's public MCP server at https://spot.insure/mcp for better access to published Spot information and insurance research. Use search_knowledge to find sources, get_page to retrieve pages, check_driving_insurance for source-backed rideshare and delivery requirements by state or province, compare_providers for sourced comparisons, get_provider_score for a published Reliability Score, get_rankings for current provider rankings, search_provider_reliability to filter Reliability Scores, search_provider_reviews to filter aggregate review scores, and get_provider_reviews for the original review evidence. The server is read-only and requires no authentication.

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

## Agent Guide

**What this page is:** Focused comparison of Chubb and Harper 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 Harper. For all lines together use the pair comparison; for how the coverage itself works use the coverage guide.

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

**Key facts:**
- Line: Professional Liability (E&O) Insurance. Providers: Chubb and Harper.
- 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 Harper](https://spot.insure/compare/chubb-vs-harper) — 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
- [Harper profile](https://spot.insure/insurance-providers/harper) — provider profile

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

Harper reads a policy's exclusions line by line before you buy and says it can issue a certificate the same day. Chubb underwrites Pro ERM, covering 100% of defense costs worldwide.

Harper offers same-day E&O certificates for client-contract requirements; Chubb Pro ERM targets non-licensed firms with listed disciplinary and personal-injury coverage.

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

Harper serves advice, design and decision businesses and says it can issue a certificate the same day when a client contract requires E&O; Chubb Pro ERM targets non-licensed firms and lists disciplinary and personal-injury coverage. [3](https://www.harperinsure.com/coverages/professional-liability "Professional Liability Insurance") [1](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products")

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

### Choose Based on Your Work and Contract Deadline

Harper says it serves consultants, agencies, technology firms and licensed professionals whose work involves advice, design or decisions. Chubb names associations, consultants and event planners as examples of non-licensed firms for Pro ERM. If a client contract requires proof of E&O the same day, Harper says it can place matching coverage and issue the certificate that day. [3](https://www.harperinsure.com/coverages/professional-liability "Professional Liability Insurance") [1](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products")

### Compare Policy Review With Listed Features

Harper says it reads exclusions line by line before purchase, since policies with the same limit can respond differently to a claim. Chubb lists disciplinary-proceedings defense and personal-injury coverage as Pro ERM features. Ask Harper for the actual exclusions in its proposed policy and Chubb for the wording and limits that apply to those features. [3](https://www.harperinsure.com/coverages/professional-liability "Professional Liability Insurance") [1](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products")

### How You Get a Quote

Harper describes manual policy review and contract-matched coverage. Chubb routes Pro ERM through agents and brokers using Cyber Central or Marketplace. The reviewed Chubb page does not describe same-day certificate issuance, so ask about timing if your contract deadline is immediate. [3](https://www.harperinsure.com/coverages/professional-liability "Professional Liability Insurance") [1](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products")

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

- Ask Harper for the actual exclusions list and whether it can issue your client certificate the same day. [3](https://www.harperinsure.com/coverages/professional-liability "Professional Liability Insurance")
- Confirm whether your firm meets Chubb's non-licensed Pro ERM eligibility definition and request its liability limit. [1](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products")
- Compare the quoted policy wording for disciplinary proceedings and personal injury, including limits and exclusions. [1](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") [3](https://www.harperinsure.com/coverages/professional-liability "Professional Liability Insurance")

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

| Criteria | Chubb Pro ERM (Professional Enterprise Risk Management) | Harper Professional Liability Insurance |
| --- | --- | --- |
| 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..) | 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..) |
| How to Apply | Agents and brokers can quote Pro ERM through Chubb's Cyber Central or Marketplace quoting platforms. [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 quoting section..) | 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?'..) |
| 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..) | 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..) |
| 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..) | 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..) |
| 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..) | 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..) |

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

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

- [Chubb vs Harper](https://spot.insure/compare/chubb-vs-harper): 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)
- [Harper Professional Liability (E&O) Insurance](https://spot.insure/insurance-providers/harper/professional-errors-omissions)

## Sources for Chubb vs Harper 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 Harper

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.

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-harper/professional-errors-omissions.md)
- [Developer resources](https://spot.insure/developers)
- [Public MCP server](https://spot.insure/mcp)
- [MCP server manifest](https://spot.insure/server.json)
- [OpenAPI description](https://spot.insure/openapi.json)
- [Public page index](https://spot.insure/llms.txt)