Harper vs Marsh: Professional Liability / E&O Insurance

Marsh pairs coverage specialists with attorneys, economists and actuaries for banks, asset managers, architects and venture firms. Harper is a broker whose specialist places a policy written around your services, for consultants, agencies and tech firms.

Kearny Risk organizes these comparisons for firms whose advice, content or technology creates professional exposures.Research updated 2026-09-25

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

Contract Deadline Versus Complex Placement

Harper builds professional liability around the applicant's services and the contract requiring coverage, then says it can issue a certificate the same day. [2] Marsh uses attorneys, economists, actuaries and coverage specialists to assess complex professional-liability exposures. [6] Choose Harper for a defined contract requirement and certificate deadline; choose Marsh when the exposure needs multidisciplinary analysis.

Industry Scope

Harper targets consultants, agencies, tech firms and licensed professionals whose advice, design or decisions can cause client financial loss. [2] Marsh names banking, asset management, venture capital, law, architecture, media, technology, healthcare and biotechnology among its specialist industries. [6]

Coverage and Review

Harper says it reads exclusions line by line because policies with the same limit can respond differently. [2] Marsh says many policies it places can address privacy violations and computer-security breaches as well as errors, omissions and negligence. [6] Ask whether those technology exposures sit inside E&O or another policy.

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

  • Ask both brokers to name the insurer, form, limit, retention and compensation. [2] [6]
  • Verify that Harper's actual form satisfies the contract behind the certificate. [2]
  • Ask Marsh which specialists will review your risk and whether cyber or privacy coverage is included. [6]

Harper tailors E&O to client contracts and says it can issue a same-day certificate; Marsh uses attorneys, economists, actuaries and coverage specialists for complex placements.

Sources reviewed

  1. 01
    Errors and Omissions Insurance

    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

  2. 02
    Professional Liability Insurance

    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

  3. 03
    What We Cover

    Harper · Coverage directory list including Errors and Omissions and Professional Liability as separate catalogue entries · accessed 2026-09-23

  4. 04
    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

  5. 05
    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

  6. 06
    Professional liability

    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

  7. 07
    Expert Executive and Professional Liability Insurance

    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

  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

Harper

  • role: 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. Professional liability page introduction and 'Why Harper' section.company-reportedSource ↗
  • role: 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. Coverage directory listing plus the E&O page's own description; a naming convention Harper states about itself, not a distinction between two products.company-reportedSource ↗Source ↗
  • eligibility: 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. Professional liability page introduction and FAQ distinguishing it from general liability.company-reportedSource ↗
  • coverage: 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. 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.company-reportedSource ↗Source ↗
  • 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. Professional liability page 'We know this' section; a described review practice, not an independently verified outcome.company-reportedSource ↗
  • application: 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. Professional liability page quote form and FAQ 'My client contract requires E&O. What now?'.company-reportedSource ↗
  • 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. Checked both the professional-liability and errors-and-omissions pages on 2026-09-23; neither names a carrier or a limit figure.not-disclosedSource ↗Source ↗

Marsh

  • role: 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 professional liability page and MMA executive and professional liability page.company-reportedSource ↗Source ↗
  • coverage: 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. Marsh professional liability page opening description; illustrative policy description, not a specific policy form.company-reportedSource ↗
  • eligibility: 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. Marsh professional liability page, What We Offer section.company-reportedSource ↗
  • insurer: The reviewed pages do not name a specific professional liability insurer. Marsh professional liability page and MMA executive and professional liability page as read on 2026-09-23.not-disclosedSource ↗Source ↗
  • services: 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. Marsh professional liability page.company-reportedSource ↗

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