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

Marsh serves specialized industries including banks, asset managers, venture firms and architects, with attorneys, economists and actuaries alongside coverage specialists; Gallagher Small Business advises E&O for small firms offering a specific professional service.

Marsh says it uses attorneys, economists and actuaries to assess professional liability exposure from multiple angles, while Gallagher's Errors and Omissions page describes market-rate trends instead of a named specialist team. ^2,¹

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

Specialist Support Behind the Placement

Marsh names a specific in-house team it uses to assess professional liability exposure:

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. ²Company-reported. Marsh professional liability page.

Gallagher's page does not describe a comparable specialist bench; it instead discusses market-rate conditions, saying the E&O market has seen rate increases that have started to moderate. ¹

When comparing Gallagher and Marsh, weigh the support difference if you want help interpreting the policy before you bind it.

Who Each Page Names as a Fit

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. ² Gallagher instead names technology, insurance, accounting, tax, wealth management and legal services, plus doctors, lawyers, accountants, nurses, caregivers, counselors, social workers and engineers. ¹

What the Policy Is Described as Covering

Marsh's page adds that many of the professional liability policies it arranges also cover privacy violations and computer security breaches, on top of liability and defense costs from an alleged error, omission or negligence. ² Gallagher's coverage description instead centers on client charges of negligence or injury tied to professional services, naming copyright infringement and punitive damages among what it responds to, without mentioning privacy or computer-security coverage. ¹

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

Confirm whether Marsh's specialist team, attorneys, economists and actuaries, reviews accounts at your revenue level. ²
Ask Gallagher how the market conditions it describes affect pricing for your specific profession. ¹
Neither Marsh's nor Gallagher's reviewed pages name an issuing insurer; ask both which carrier would underwrite your policy. ² ¹
Ask Marsh whether privacy or computer-security coverage is included in your policy, and ask Gallagher whether a comparable extension is available. ² ¹

Gallagher vs Marsh Professional Liability (E&O) Insurance Compared

Gallagher vs Marsh: Professional Liability (E&O) Insurance: documented features by provider

Criteria	Gallagher Small Business Errors and Omissions Insurance	Marsh Professional Liability Insurance Brokerage
Who It’s For	Gallagher recommends E&O for small businesses that provide a specific professional service, naming technology, insurance, accounting, tax, wealth management and legal services, and lists doctors, lawyers, accountants, nurses, caregivers, counselors, social workers and engineers as example professionals; it also notes that many client contracts require carrying E&O. ¹Company-reported. Product page eligibility and recommended-professions lists; actual acceptance depends on underwriting.	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. ²Company-reported. Marsh professional liability page, What We Offer section.
Coverage Features	Gallagher describes E&O as protecting against client charges of negligence or injury tied to professional services, covering losses, attorney fees and court costs regardless of fault, and specifically responding to alleged or actual negligence, personal injury, copyright infringement, punitive damages, and claims against past work, temporary staff or independent contractors. ¹Company-reported. Product page coverage description; the issued policy and its exclusions control. Note this record excludes medical malpractice, which the page treats as a separate specialized coverage covered under its own line. Gallagher's small-business team says the E&O market has seen consistent rate increases that have started to moderate, driven by higher claim frequency, litigation costs and a more litigious environment, and that insurers are more selective and require more detailed underwriting information. ¹Company-reported. Product page market-commentary section; a general market view, not a quote for any specific business.	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. ²Company-reported. Marsh professional liability page opening description; illustrative policy description, not a specific policy form.
Role in This Line	Gallagher Small Business arranges errors and omissions (E&O) coverage with partner carriers rather than underwriting the policy itself. ¹Company-reported. Gallagher Small Business's direct-to-small-business E&O product page.	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. ^2,³Company-reported. Marsh professional liability page and MMA executive and professional liability page.

Criteria

Gallagher Small Business Errors and Omissions Insurance

Marsh Professional Liability Insurance Brokerage

Who It’s For

Gallagher recommends E&O for small businesses that provide a specific professional service, naming technology, insurance, accounting, tax, wealth management and legal services, and lists doctors, lawyers, accountants, nurses, caregivers, counselors, social workers and engineers as example professionals; it also notes that many client contracts require carrying E&O. ¹Company-reported. Product page eligibility and recommended-professions lists; actual acceptance depends on underwriting.

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. ²Company-reported. Marsh professional liability page, What We Offer section.

Coverage Features

Gallagher describes E&O as protecting against client charges of negligence or injury tied to professional services, covering losses, attorney fees and court costs regardless of fault, and specifically responding to alleged or actual negligence, personal injury, copyright infringement, punitive damages, and claims against past work, temporary staff or independent contractors. ¹Company-reported. Product page coverage description; the issued policy and its exclusions control. Note this record excludes medical malpractice, which the page treats as a separate specialized coverage covered under its own line.

Gallagher's small-business team says the E&O market has seen consistent rate increases that have started to moderate, driven by higher claim frequency, litigation costs and a more litigious environment, and that insurers are more selective and require more detailed underwriting information. ¹Company-reported. Product page market-commentary section; a general market view, not a quote for any specific business.

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. ²Company-reported. Marsh professional liability page opening description; illustrative policy description, not a specific policy form.

Role in This Line

Gallagher Small Business arranges errors and omissions (E&O) coverage with partner carriers rather than underwriting the policy itself. ¹Company-reported. Gallagher Small Business's direct-to-small-business E&O product page.

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. ^2,³Company-reported. Marsh professional liability page and MMA executive and professional liability page.