What Is Aon?
Aon’s U.S. Commercial Risk terms describe brokerage for certain insurance programs, while its Middle Market page describes a dedicated practice for mid-sized organizations across North America. The public materials reviewed do not identify the licensed producer or insurer for a particular placement. Ask which entity will produce each line and which insurer will issue the policy; request jurisdiction details for the proposed placement and ask how compensation and claim notice work for your account. 1,2
What Is Marsh?
Marsh suits technology and larger businesses seeking specialist cyber placement or broad global risk advice; small firms wanting a quick standard quote should compare its MMA route or digital agencies. 4,5,6,7
What Is Management Liability Insurance?
Management liability packages can combine D&O and employment-practices coverage for leader and workplace claims, while benefit-plan protection may be a separate part. Shared limits can let a claim in one part reduce what is available for another, so compare the limits across the quote. 11,12,13,14,15,16
Key Differences in Management Liability Insurance
Program Scope and Structure
Aon presents management liability as a program it designs for professional partnerships, with law, accounting and consulting firms named as the practice audience. Marsh frames management liability as an umbrella for related executive-risk products and says its FINPRO team advises companies of all sizes. Marsh lists D&O, employment practices, pension trustees, portfolio-company and public-securities offerings as areas of expertise. A buyer should compare this broader stated scope with Aon’s partnership focus and confirm whether the relevant line is offered in the account. 3 8
Access, Terms and Fit
Both firms describe advisor-led placement, and neither reviewed page names a specific insurer for a buyer’s policy. Marsh says a buyer engages a FINPRO specialist; Aon describes professional-services advisors using industry knowledge, data and tools. These service descriptions do not determine coverage terms. Ask each firm to identify the carrier, policy parts and limits, and establish whether a proposed management-liability program includes separate pension-trustee or securities-offering protection. 3 8
What to Confirm in Management Liability Insurance Quotes
Review Scores
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.
Aon
Review Score
3 rated sources
Public ratings for Aon are low: Trustpilot shows 1.2 out of 5 from 782 reviews, and BBB shows 1.6 from five. Aon is a global firm, so those pages mostly reflect other parts of the business, not large U.S. commercial accounts.[4][6][7]
Read Aon reviewsMarsh
Review Score
2 rated sources
Marsh’s global Trustpilot profile has a poor 1.3/5 score. Treat it as a service warning to investigate with your proposed team; it does not isolate US commercial accounts.[2][4][7]
Read Marsh reviewsOffering Details
Aon vs Marsh: Management Liability Insurance: documented features by provider
| Criteria | Aon Management Liability brokerage and risk-advisory offering | Marsh Management Liability Insurance Brokerage |
|---|---|---|
| Role in This Line | Aon presents Management Liability as a line its Professional Services Practice helps arrange or advise on for professional-service firms. Aon is describing a global brokerage and advisory service, not issuing the underlying policy. The producing legal entity and carrier for any particular placement are not named on this page. 3Company-reported. Aon’s global professional-services practice page. This establishes a marketed brokerage/advisory offering, not policy issuance or account-specific placement. | Marsh's FINPRO (financial and professional) practice advises companies on management liability coverage, which Marsh's Financial & Professional Liability page frames as an umbrella term covering related executive-risk products rather than a single policy. 8Company-reported. The management-liability page resolves to Marsh's en-gb (UK) site path, so its described team and product list (pension trustee liability, public offering of securities insurance) reflect a UK FINPRO practice rather than a confirmed US program. |
| Issuing Insurer | The reviewed practice page does not name the insurer or producing legal entity for a specific placement. Ask for both on the quote and binder. 3Not found in reviewed sources. Aon’s global practice page as reviewed 2026-09-30; no state-specific placement schedule or buyer quote was reviewed. This does not establish that Aon cannot arrange a placement. | The reviewed pages do not name a specific management liability insurer. 8,9Not publicly disclosed. UK FINPRO management liability page and Marsh's Financial & Professional Liability page as read on 2026-09-23. |
| Who It’s For | Aon identifies law, accounting and consulting firms as the audience for its global Professional Services Practice. That audience scope does not establish eligibility for every firm or other business. 3Company-reported. Audience described for Aon’s global professional-services practice. It does not establish U.S. state availability or underwriting eligibility for a placement. | Marsh says the FINPRO management liability team advises companies of all sizes on their management liability cover. 8Company-reported. UK FINPRO management liability page. |
| Coverage Features | Aon says it designs management-liability programs for professional partnerships to help protect partners and managers exposed to business-operation liabilities. It describes a practice program, not a named insurer’s policy form or a guaranteed coverage result. 3Company-reported. Aon’s marketing description of the brokerage/coverage area. The page is not the insurer’s policy form and does not establish an insured's entitlement to coverage. | Marsh's UK management liability page lists directors and officers liability, employment practices liability, pension trustee liability, coverage for private equity owned portfolio companies, and public offering of securities insurance as its areas of expertise under this practice. 8Company-reported. UK FINPRO management liability page; the mix of products may differ for a US placement. |
| Limits and Retentions | The reviewed page does not state a buyer-specific limit, retention, deductible or other placement terms. Confirm these in the quote, bond or issued policy. 3Not publicly disclosed. Aon’s global practice page as reviewed 2026-09-30; no quote, bond form or issued policy was reviewed. | Confirm in your quote. |
| Risk Services | Aon says its professional-services advisors use industry knowledge, insights, data and tools to support risk-management and human-capital decisions. This is a company-described advisory service, not a claim outcome or policy benefit. 3Company-reported. Company-reported advisory services on Aon’s global practice page; account-specific service scope is not stated. | Confirm in your quote. |
| How to Apply | Confirm in your quote. | You engage a Marsh or MMA financial and professional liability specialist directly; the reviewed pages describe advisor-led placement rather than a self-serve quote. 9,10Company-reported. Financial & Professional Liability page and MMA executive and professional liability page. |
Full Comparison
More Aon vs Marsh Comparisons
Other Management Liability Insurance Comparisons
Sources
Aon
- Commercial Risk Solutions U.S. Brokerage Terms of Service. Aon; Lines 120–127: certain-program broker-of-record scope, consultation, application assistance, client signature and bind instruction, and account administration; lines 140–147: variable and contingent compensation, potential placement incentive, and client request route; lines 206–213: no price guarantee and surplus-lines limitations; lines 229–231: client insurer-notice duty unless separately agreed. Accessed 2026-09-29.
- Middle Market Clients. Aon; Lines 125–132: mid-sized organizations and middle-market framing; lines 165–173: dedicated practice and North America statement; lines 188–224: Commercial Risk capabilities. No numeric company-size cutoff or U.S.-only eligibility rule is stated on the reviewed page. Accessed 2026-09-29.
- Professional Services Practice. Aon; Named professional-services audiences and global advisory role, lines 125–128; line offerings and explanations lines 131–190; contact link lines 120–122. Global practice page; no U.S. state or account-specific placement schedule. Accessed 2026-09-30.
Marsh
- Marsh | Leader in risk, strategy, people, and investments. Marsh; Hero and capability tiles; FAQ: What does Marsh do?; industries served; Is Marsh the same as Marsh McLennan? January 2026 brand change. Accessed 2026-09-16.
- Compensation guide for US clients. Marsh; US broking segments; broker role; retail commissions, client fees, wholesale, insurer consulting, contingent and supplemental commissions; Marsh LLC and Marsh USA LLC; page 3: broker role and Marsh & McLennan Agency segment; page 7: copyright © 2024 Marsh LLC. Accessed 2026-09-16.
- Marsh McLennan Agency (MMA). Marsh; Middle-market US organizations; wholly-owned subsidiary; business insurance, employee health and benefits, retirement, private client. Accessed 2026-09-16.
- Technology | Insurance Broking & Risk Management. Marsh; Opening Technology Practice description; practice links including data center insurance, fintech and Stratus; Talk to us. Accessed 2026-09-16.
- Management Liability. Marsh; FINPRO management liability team description; Our areas of expertise: D&O, EPL, pension trustee liability, private equity owned portfolio companies, public offering of securities insurance. Accessed 2026-09-23.
- Financial & Professional Liability. Marsh; Practice introduction for executive insurance advisory; FAQ distinguishing management liability, D&O and EPL. Accessed 2026-09-23.
- 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.
Management Liability Insurance Guide
- Glossary of Insurance Terms. National Association of Insurance Commissioners; Directors & Officers Liability; Employment Practices Liability Coverage; introductory scope note. Accessed 2026-09-16.
- Management Liability Insurance. The Hartford; What Is Management Liability Insurance?; Who Does Management Liability Insurance Protect. Accessed 2026-09-16.
- The ForeFront Portfolio. Chubb; Introduction; optional coverage parts; private, not-for-profit and healthcare portfolios. Accessed 2026-09-16.
- Private Company Directors and Officers Liability Coverage. Travelers Casualty and Surety Company of America; I p.1; III pp.2–3; IV pp.4–6; VI pp.6–8. Accessed 2026-09-16.
- Liability Coverage Terms and Conditions. Travelers Casualty and Surety Company of America; III.B p.3; III.C pp.4–5; III.D–G pp.5–6. Accessed 2026-09-16.
- Private Company Directors and Officers Liability Coverage Application. Travelers Casualty and Surety Company of America; I–II pp.1–2; III–IV pp.2–3; V–VIII pp.3–4. Accessed 2026-09-16.
