Liberty Mutual vs 
Marsh McLennan Agency: How Do They Compare for D&O Insurance?
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. 1,2
What Is Marsh McLennan Agency?
Marsh McLennan Agency provides business insurance and employee health and benefits, alongside retirement, wealth, and private-client services across the United States and Canada. Its US small-business page lists six common coverage types and directs buyers to request a personalized quote by phone; the insurer and terms for a specific placement must be confirmed in the proposal. 4,5
What Is Directors and Officers Insurance?
D&O insurance can help pay covered defense costs and losses from claims against company leaders over management decisions. If your organization has a board or executives, check whether the company itself is insured and whether legal bills reduce the limit. 7,8,9
What Are the Key Differences Between Liberty Mutual and Marsh McLennan Agency D&O Insurance?
Terms that matter before a claim
Liberty Mutual’s ProShield description calls out investigation and pre-claim inquiry coverage. Marsh McLennan Agency describes D&O for alleged wrongful acts by directors and officers, including defense costs for civil and criminal actions and investigations, while leaving actual terms to the policy. Buyers weighing an inquiry before litigation should ask both providers when an investigation becomes a covered claim and whether defense costs erode the limit. 3 6
Placement and coverage structure
Marsh McLennan Agency invites organizations to contact an adviser about placement; Liberty Mutual offers D&O as part of ProShield’s combined package. The adviser route can support a placement discussion, while the package may combine related management-liability sections. Buyers should compare the recommended carrier and form against ProShield’s included coverages rather than treating a high-level overview as a quote. 6 3
What Should You Confirm in Liberty Mutual and Marsh McLennan Agency D&O Insurance Quotes?
- What counts as an investigation or pre-claim inquiry under ProShield? Which civil, criminal and regulatory investigations trigger defense under the proposed MMA placement? Identify carrier, limit, retention and package sections in writing.
Liberty Mutual and Marsh McLennan Agency 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.
Liberty 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 reviewsMarsh McLennan Agency Review Score
Review Score
2 rated sources
There are almost no public customer reviews of Marsh McLennan Agency (MMA). Trustpilot shows 3.2 out of 5, but from a single review, and BBB shows an A grade with four complaints closed in three years.[8][9][1]
Read Marsh McLennan Agency reviewsLiberty Mutual vs Marsh McLennan Agency D&O Insurance Compared
Liberty Mutual vs Marsh McLennan Agency: D&O Insurance: documented features by provider
| Criteria | Liberty Mutual ProShield Directors and Officers coverage | Marsh McLennan Agency directors officers (official overview) |
|---|---|---|
| Role in This Line | Liberty Mutual includes D&O coverage in its ProShield management-liability package. 3Company-reported. Liberty Mutual’s cited product or program overview documents this description. It does not establish the issuing insurer for an individual quote, exact state or provincial availability, the policy form, complete exclusions, or terms offered to a particular buyer; confirm those in the quote and policy documents. | Marsh McLennan Agency describes arranging directors officers for the audience stated on the cited product page. 6Company-reported. directors officers marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement. |
| Who It’s For | The source describes private-company and not-for-profit ProShield options; it does not establish availability for every organization. 3Company-reported. Liberty Mutual’s cited product or program overview documents this description. It does not establish the issuing insurer for an individual quote, exact state or provincial availability, the policy form, complete exclusions, or terms offered to a particular buyer; confirm those in the quote and policy documents. | Corporate executives, board members, and their organizations, as described by the source. 6Company-reported. directors officers marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement. |
| Coverage Features | The page lists selected D&O features such as investigation and pre-claim inquiry coverage and separate options for private and not-for-profit companies; policy wording controls. 3Company-reported. Liberty Mutual’s cited product or program overview documents this description. It does not establish the issuing insurer for an individual quote, exact state or provincial availability, the policy form, complete exclusions, or terms offered to a particular buyer; confirm those in the quote and policy documents. | The cited product page describes D&O for alleged wrongful acts by directors or officers, including described defense costs for civil and criminal actions and investigations. Marketing description only; actual coverage, exclusions, conditions, limits, and availability depend on the issued policy and jurisdiction. 6Company-reported. directors officers marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement. |
| Limits and Retentions | The cited public overview does not establish the limits, deductibles, exclusions or form terms that would apply to a specific buyer. 3Not publicly disclosed. Ask for the quote and specimen or issued policy forms before treating a listed feature as covered. | The cited overview does not set a universal limit or retention for this line. Ask for the proposed policy form, limits, retentions, exclusions, and conditions in the quote. 6Not publicly disclosed. Only the cited marketing page was reviewed for published limit and retention information; no policy-form entitlement is inferred. |
| Risk Services | Liberty Mutual describes ProShield as one package policy that combines multiple management-liability coverages and is designed to reduce the need for separate endorsements. 3Company-reported. Liberty Mutual’s cited product or program overview documents this description. It does not establish the issuing insurer for an individual quote, exact state or provincial availability, the policy form, complete exclusions, or terms offered to a particular buyer; confirm those in the quote and policy documents. | Confirm in your quote. |
| How to Apply | Confirm in your quote. | The page invites organizations to contact a Marsh McLennan Agency adviser or specialist to discuss placement. The page does not establish a quote, bind, or coverage-effective timeline. 6Company-reported. directors officers marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement. |
Related Pages for Liberty Mutual vs Marsh McLennan Agency D&O
D&O Insurance Pages for Liberty Mutual and Marsh McLennan Agency
Other Coverage Lines Compared for Liberty Mutual vs Marsh McLennan Agency
Other D&O Insurance Provider Comparisons
Sources for Liberty Mutual vs Marsh McLennan Agency D&O Insurance
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.
- ProShield. Liberty Mutual Business Insurance; Opening paragraphs identify package combining directors and officers, employment practices, fiduciary, and crime coverages; D&O and crime sections describe examples of exposures and selected coverage features. Examples are not policy terms. Accessed 2026-09-29.
Sources About Marsh McLennan Agency
- Who We Are. Marsh McLennan Agency; Lines 193-195: ‘a business of Marsh’ and company-listed service lines across US and Canada. This does not establish the legal entity for an account, corporate ownership chart, or insurer role. Accessed 2026-09-29.
- Small Business Insurance Solutions. Marsh McLennan Agency; Lines 205-207: small-business audience and call invitation; lines 224-249 list six coverage categories and short descriptions; line 264 is an embedded form whose function is not stated. No form submitted. Accessed 2026-09-29.
- Executive and Professional Liability | MMA. Marsh McLennan Agency; Directors and Officers section; claims for alleged wrongful acts and defense costs. Accessed 2026-09-30.
Sources for the D&O Insurance Guide
- Glossary of Business Insurance Terms. The Hartford; Directors and Officers Liability Insurance; Errors and Omissions Insurance; Employment Practices Liability Insurance. Accessed 2026-09-16.
- The Chubb Primary Directors & Officers and Entity Securities Liability Insurance. Chubb Group of Insurance Companies; hosted by eperils; I.A–C p.1; I.C p.1; I and III.A–B pp.1–2; VI Reporting pp.3–4. Accessed 2026-09-16.
- Private Company Directors and Officers Liability Coverage. Travelers Casualty and Surety Company of America; I.A–C p.1; I.C p.1; Header p.1 and VI.A pp.6–7. Accessed 2026-09-16.
