At Bay vs Liberty Mutual: Professional Liability / E&O Insurance

Liberty Mutual lists a Physicians & Surgeons Professional program marked PL Only, managed by program administrators. At-Bay markets miscellaneous professional liability up to $5 million, with its page aimed at licensed insurance professionals.

Kearny Risk organizes these comparisons for firms whose advice, content or technology creates professional exposures.Research updated 2026-10-01

What Are the Key Differences Between At-Bay and Liberty Mutual Professional Liability (E&O) Insurance?

Limit and eligibility detail

At-Bay says it offers primary miscellaneous professional liability for businesses of all revenue sizes, with limits up to $5 million subject to state restrictions and eligibility. Liberty Mutual lists a Physicians & Surgeons Professional program as “PL Only,” but its listing does not state limits or detailed form terms. The available public figures let an eligible At-Bay applicant begin limit discussions; a Liberty Mutual quote is needed to establish the offered amount. Neither headline establishes approval or a particular retention. [4] [7]

Submission channel and coverage wording

At-Bay directs licensed insurance professionals to submit by email or through its Broker Platform, where they can quote, customize limits and retentions, and bind. [2] Liberty Mutual says its specialty programs are managed by program administrators and gives inquiry contacts. These are distinct application paths, and the label “professional liability” does not reveal matching coverage triggers. Buyers should compare definitions, defense provisions and state availability in issued forms. [4] [7]

What Should You Confirm in At-Bay and Liberty Mutual Professional Liability (E&O) Insurance Quotes?

  • Ask At-Bay whether your state and profession qualify and confirm available limits, retention and professional-services definition.
  • Ask Liberty Mutual’s administrator for the program’s insurer, limit options, application steps and form wording.

At-Bay publishes MPL limits up to $5 million for eligible businesses; Liberty Mutual lists a Physicians & Surgeons Professional liability-only program without published limits.

Sources reviewed

  1. 01
    At-Bay Doubles Miscellaneous Professional Liability Appetite

    At-Bay · September 28, 2023 release: final paragraph before Media Contacts · accessed 2026-09-16

  2. 02
    Broker Platform

    At-Bay · How it works: Create a quote, Customize your quote, Bind your policy, Manage renewals; FAQs · accessed 2026-09-16

  3. 03
    Licenses

    At-Bay · Producer introduction; agency and surplus-lines footer naming At-Bay Insurance Services LLC · accessed 2026-09-16

  4. 04
    MPL Insurance: Coverage Highlights & Appetite

    At-Bay · MPL Coverage Highlights list; MPL Appetite paragraph; Send us your submissions; "material on this page is intended for use solely by properly licensed insurance professionals" · accessed 2026-09-23

  5. 05
    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

  6. 06
    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

  7. 07
    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

  8. 08
    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

  9. 09
    Get business insurance

    U.S. Small Business Administration · Six common types of business insurance table · accessed 2026-09-16

Areas of coverage

At-Bay

  • role: At-Bay markets MPL as one of its own named insurance products, sold through its disclosed producer, At-Bay Insurance Services LLC, with the product page directed at "properly licensed insurance professionals" submitting business rather than at direct retail buyers. Current MPL product page and license disclosures; this describes the distribution channel, not who bears the underwriting risk.company-reportedSource ↗Source ↗
  • insurer: The current MPL product page does not name the insurer that issues the policy. A September 2023 press release named United Specialty Company in connection with MPL, but that historical reference does not establish the current issuing insurer for a new MPL quote. Reviewed MPL page as of 2026-09-23 and the September 2023 press release; restates the existing provider fact that MPL's current issuer is unresolved, distinct from the August 2023 Cyber/Tech E&O transition to At-Bay Specialty Insurance Company paper.not-foundSource ↗Source ↗
  • eligibility: At-Bay says it provides primary MPL for businesses of all revenue sizes with limits up to $5 million, subject to state restrictions and eligibility requirements detailed in a separate MPL appetite guide. Current MPL appetite paragraph; the linked appetite guide's specific eligibility requirements were not independently opened for this record.company-reportedSource ↗
  • coverage: At-Bay lists MPL coverage highlights including automatic coverage for acquired subsidiaries, claims-made-and-reported coverage, coverage for independent contractors, disciplinary-proceedings defense, a duty-to-defend contract, personal-injury coverage (including emotional distress), punitive damages where insurable, a professional-services definition written for each insured, and an 80/20 hammer clause. Product-page coverage-highlights list; an 80/20 hammer clause is a settlement provision where the insurer pays 80% and the insured pays 20% of costs after the insured declines a recommended settlement. The issued policy and declarations control actual wording, limits and exclusions.company-reportedSource ↗
  • limits: At-Bay publishes an MPL limit ceiling of up to $5 million, with state restrictions that are not detailed on the product page itself. Current appetite paragraph; this is an advertised ceiling, not a guaranteed available limit for any specific applicant.company-reportedSource ↗
  • application: At-Bay directs MPL submissions to underwriting by email or through automatic quotes on its Broker Platform, which At-Bay describes as a workflow of creating a quote, customizing limits and retentions, and binding the policy. Current submission instructions and the general broker-platform workflow description; MPL-specific automation details were not separately confirmed.company-reportedSource ↗Source ↗

Liberty Mutual

  • role: Liberty Mutual lists a Physicians & Surgeons Professional program, marked “PL Only,” in its specialty-program portfolio. 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.company-reportedSource ↗
  • eligibility: Liberty Mutual says its programs are managed by program administrators; the page provides program inquiry contact details. 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.company-reportedSource ↗
  • coverage: The listing identifies professional liability only; it does not establish form terms, limits, exclusions or insurer for a quote. 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.company-reportedSource ↗
  • application: 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. Reviewed product-page scope only. This not-found disposition is not a claim that no digital route exists.not-foundSource ↗

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