What Is Chubb?
Chubb fits technology firms seeking DigiTech ERM or small businesses with up to $30 million in revenue seeking a BOP; buyers wanting an instant direct purchase should compare online carriers. Agents can quote eligible small accounts, with a faster cyber route. 1,2,3
What Is Liberty Mutual Business Insurance?
Liberty Mutual spans small-commercial, commercial, specialty, surety, and reinsurance businesses. The insurer and distribution route depend on the product, so check the offer and policy before you compare terms. 5,6
Read the Liberty Mutual profile
Read the Liberty Mutual 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
Key Differences in Professional Liability (E&O) Insurance
Combined policy and covered professions
Chubb underwrites Pro ERM as one policy combining professional liability, media and cyber for non-licensed professional-services firms. It says E&O includes technology services, independent contractors, client additional-insured status when contractually required and defense for professional disciplinary proceedings. Liberty Mutual lists a Physicians & Surgeons Professional liability-only program. These stated audiences differ; a licensed professional should confirm eligibility before comparing features, while a non-licensed firm should ask whether Pro ERM’s broader bundle fits its services. 3 7
Defense costs and quote detail
Chubb says Pro ERM covers 100% of defense costs for covered claims worldwide but does not publish a separate liability limit or retention on the reviewed page; brokers can quote it through Cyber Central or Marketplace. Liberty Mutual’s program listing provides no limit, trigger or insurer detail. Buyers should inspect defense-cost treatment, aggregate erosion, professional-services definitions and application requirements in both quotes rather than infer equivalence from “professional liability.” 3 7
What to Confirm in Professional Liability (E&O) Insurance Quotes
- Ask Chubb whether defense costs erode the limit and confirm that your professional services meet the non-licensed firm criteria.
- Ask Liberty Mutual’s program administrator for issuing insurer, eligible specialties, limits and defense-cost wording.
Chubb and Liberty Mutual 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.
Chubb Review Score
Review Score
5 rated sources
Chubb earns 5/5 from NerdWallet, which reports fewer-than-expected commercial property and liability complaints. Customer ratings are mixed across products and locations.[1][4][7][8][9]
Read Chubb reviewsLiberty Mutual Review Score
Review Score
2 rated sources
Customers give Liberty Mutual 4.2 out of 5 on Trustpilot from 3,836 reviews, but that page mixes auto, home and life customers with business ones. For business insurance specifically, NerdWallet gives 3.0 out of 5 and reports more complaints than expected.[4][1]
Read Liberty Mutual reviewsChubb vs Liberty Mutual Professional Liability (E&O) Compared
Chubb vs Liberty Mutual: Professional Liability (E&O) Insurance: documented features by provider
| Criteria | Chubb Pro ERM (Professional Enterprise Risk Management) | Physicians & Surgeons Professional program |
|---|---|---|
| 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. 3Company-reported. Cyber Insurance Coverage & Products page, Professional Enterprise Risk Management section. | Liberty Mutual lists a Physicians & Surgeons Professional program, marked “PL Only,” in its specialty-program portfolio. 7Company-reported. Official Liberty Mutual commercial/product page; company-reported description scoped to Physicians & Surgeons Professional program. Not policy wording, underwriting approval, state eligibility or a coverage guarantee. |
| 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. 3Company-reported. Pro ERM Target Clients list. | Liberty Mutual says its programs are managed by program administrators; the page provides program inquiry contact details. 7Company-reported. Official Liberty Mutual commercial/product page; company-reported description scoped to Physicians & Surgeons Professional program. Not policy wording, underwriting approval, state eligibility or a coverage guarantee. |
| 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. 3Company-reported. Pro ERM Product Features list; subject to the policy as issued. | The listing identifies professional liability only; it does not establish form terms, limits, exclusions or insurer for a quote. 7Company-reported. Official Liberty Mutual commercial/product page; company-reported description scoped to Physicians & Surgeons Professional program. Not policy wording, underwriting approval, state eligibility or a coverage guarantee. |
| Limits and Retentions | Chubb says Pro ERM includes coverage for 100% of defense costs for covered claims worldwide, but the reviewed page does not publish a separate liability limit or retention. 3Company-reported. Pro ERM Product Features list. | Confirm in your quote. |
| 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. 3Company-reported. Pro ERM Product Features list. | Confirm in your quote. |
| How to Apply | Agents and brokers can quote Pro ERM through Chubb's Cyber Central or Marketplace quoting platforms. 3Company-reported. Cyber Insurance Coverage & Products page quoting section. | The cited product page does not establish an online application or policy-binding path; ask the listed team or your broker/agent how this product is placed. 7Not found in reviewed sources. Reviewed product-page scope only. This not-found disposition is not a claim that no digital route exists. |
Related Pages for Chubb vs Liberty Mutual Professional Liability (E&O)
Professional Liability (E&O) Pages for Chubb and Liberty Mutual
Other Coverage Lines Compared for Chubb vs Liberty Mutual
Other Professional Liability (E&O) Insurance Provider Comparisons
Sources for Chubb vs Liberty Mutual
Sources About Chubb
- Insurance For Technology Companies. Chubb; Industry overview; Who we serve; Products and services: commercial package insurance (BOP, Benchmarq, Customarq), E&O/Cyber, Financial Lines, workers’ compensation, auto and umbrella; dedicated underwriting, claims and risk engineering. Accessed 2026-09-16.
- Terms Of Use. Chubb; Acceptance of Terms identifying Chubb Group Holdings Inc.; surplus-lines producer restriction; products not available to all users or jurisdictions; Chubb Limited safe-harbor language; Internet Portals for Chubb Business. Accessed 2026-09-16.
- Cyber Insurance Coverage & Products. Chubb; Professional Enterprise Risk Management section: target clients and product features beyond Cyber ERM. Accessed 2026-09-23.
- Insurance for Software Product & System Developers. Chubb; Financial-lines coverage solutions list for software and systems developers. Accessed 2026-09-23.
Sources About Liberty Mutual
- Company Profile. Liberty Mutual Group; Strategic business units paragraph: US Retail Markets (individuals/small businesses; small commercial; countrywide) and Global Risk Solutions (mid-size/large businesses; commercial, specialty, reinsurance, surety; worldwide). Accessed 2026-09-29.
- Commercial Insurance Solutions. Liberty Mutual Business Insurance; Commercial solutions index names commercial auto and fleet, cyber, environmental liability, equipment breakdown, excess and surplus, general liability, healthcare liability, inland marine, management liability, multinational, ocean marine, professional liability, property, reinsurance, surety, umbrella/excess and workers compensation. Disclosure says policy insurer is named when offered, may be an affiliate/subsidiary or surplus-lines insurer; states/jurisdictions and actual policy terms vary. Accessed 2026-09-29.
- Programs. Liberty Mutual Business Insurance; ‘Our programs portfolio’ lists Auto Salvage/Dismantlers, Fire Suppression and Sprinkler Contractors, Nonprofits, Physicians & Surgeons Professional (PL only), Post-surgical for bariatric and plastic surgeries, Roofing Contractors, Scrap Metal Dealers, Self-storage, and Sports and Fitness. Page says programs are managed by program administrators; not a complete business catalogue. Accessed 2026-09-29.
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.
