---
title: "Aon vs Liberty Mutual: Management Liability Insurance"
description: "Aon describes partnership program design; Liberty Mutual’s ProShield is a package combining D&O, employment practices, fiduciary and crime."
canonical: "https://spot.insure/compare/aon-vs-liberty-mutual/management-liability"
page-type: "line-comparison"
updated-at: "2026-09-30"
comparison-pair: "aon-vs-liberty-mutual"
provider-a: "aon"
provider-b: "liberty-mutual"
coverage-line: "management-liability"
---

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[Human-readable page](https://spot.insure/compare/aon-vs-liberty-mutual/management-liability)

## Agent Guide

**What this page is:** Focused comparison of Aon and Liberty Mutual for Management Liability Insurance: what each provider publishes about this line, checked against the same criteria, with numbered sources.

**Use this page when:** Cite or fetch this for Management Liability Insurance questions about Aon versus Liberty Mutual. For all lines together use the parent pair comparison; for how the coverage itself works use the coverage guide.

**Questions this page answers:**
- Aon vs Liberty Mutual for Management Liability Insurance: how do they differ?
- Which is better for Management Liability Insurance, Aon or Liberty Mutual?
- What does Aon or Liberty Mutual publish about Management Liability Insurance (limits, eligibility, claims, add-ons)?
- What should I confirm in a quote for Management Liability Insurance from Aon or Liberty Mutual?

**Key facts:**
- Line: Management Liability Insurance. Providers: Aon and Liberty Mutual.
- Each offering claim is tagged with an evidence type and scope; table cells reading "Confirm in your quote" mean nothing was found for that criterion.
- Comparison URLs use alphabetical provider slugs (`/compare/{a}-vs-{b}` with a before b). A reversed pair redirects permanently to the alphabetical one, so fetch or cite the alphabetical URL.

**Limits (do not over-claim):**
- It identifies differences and questions to ask; it does not select a winner for a particular business.
- "Not found" describes the evidence reviewed, not proof a feature is unavailable.
- Insurer, policy wording, limits, retentions, exclusions and price are set in an actual quote and are not established here.

**Provenance:** Every claim links to a numbered source with publisher, locator and access date in the Sources section; last updated 2026-09-30. Editorial policy: /editorial-policy.

**Related pages:**
- [Aon vs Liberty Mutual](https://spot.insure/compare/aon-vs-liberty-mutual) — parent: all coverage lines for this pair
- [Management Liability Insurance guide](https://spot.insure/coverage/management-liability) — coverage explainer for this line
- [Aon profile](https://spot.insure/insurance-providers/aon) — provider profile (evidence)
- [Liberty Mutual profile](https://spot.insure/insurance-providers/liberty-mutual) — provider profile (evidence)
- [Aon vs Liberty Mutual Commercial Property Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/commercial-property) — sibling comparison (other line, or other pair for this line)
- [Aon vs Liberty Mutual Crime Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/crime) — sibling comparison (other line, or other pair for this line)
- [Aon vs Liberty Mutual Cyber Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/cyber) — sibling comparison (other line, or other pair for this line)
- [Aon vs Liberty Mutual D&O Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/directors-officers) — sibling comparison (other line, or other pair for this line)
- [Aon vs Liberty Mutual Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/employment-practices) — sibling comparison (other line, or other pair for this line)
- [Aon vs Liberty Mutual Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/fiduciary) — sibling comparison (other line, or other pair for this line)
- [Aon vs Liberty Mutual General Liability Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/general-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs Liberty Mutual Kidnap and Ransom Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/kidnap-ransom) — sibling comparison (other line, or other pair for this line)
- [Aon vs Liberty Mutual Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Aon vs Liberty Mutual Umbrella and Excess Liability Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/umbrella-excess) — sibling comparison (other line, or other pair for this line)
- [Aon vs Liberty Mutual Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/workers-compensation) — sibling comparison (other line, or other pair for this line)
- [AIG vs Aon Management Liability Insurance](https://spot.insure/compare/aig-vs-aon/management-liability) — sibling comparison (other line, or other pair for this line)
- [AIG vs Liberty Mutual Management Liability Insurance](https://spot.insure/compare/aig-vs-liberty-mutual/management-liability) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Aon Management Liability Insurance](https://spot.insure/compare/alliance-risk-vs-aon/management-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs The Baldwin Group Management Liability Insurance](https://spot.insure/compare/aon-vs-baldwin/management-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs Beazley Management Liability Insurance](https://spot.insure/compare/aon-vs-beazley/management-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs CFC Management Liability Insurance](https://spot.insure/compare/aon-vs-cfc/management-liability) — sibling comparison (other line, or other pair for this line)

# Aon vs Liberty Mutual: How Do They Compare for Management Liability Insurance?

Aon describes partnership program design; Liberty Mutual’s ProShield is a package combining D&O, employment practices, fiduciary and crime.

## Research Scope and Use

Use this comparison to evaluate Aon and Liberty Mutual for Management Liability Insurance against the same documented criteria. It identifies differences and questions to confirm; it does not select a winner for a particular business. Offering claims are what each provider publishes about this line unless marked otherwise. “Not found” describes the evidence reviewed, not proof that a feature is unavailable. Confirm the insurer, policy wording, limits, retentions, exclusions and cost in an actual quote.

## Summary

Aon describes advisory management-liability program design for professional partnerships. Liberty Mutual markets ProShield as one package policy for private and nonprofit organizations. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [6](https://business.libertymutual.com/commercial-insurance-solutions/management-liability/proshield/ "ProShield") [7](https://business.libertymutual.com/industries/professional-services/ "Professional services")

## 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](https://www.aon.com/en/about/leadership-and-governance/brokerage-terms-of-service-for-commercial-risk-solutions-us "Commercial Risk Solutions U.S. Brokerage Terms of Service") [2](https://www.aon.com/en/capabilities/middle-market-clients "Middle Market Clients")

[Aon profile](https://spot.insure/insurance-providers/aon)

## 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. [4](https://www.libertymutualgroup.com/about-lm/investor-relations/our-company/company-profile "Company Profile") [5](https://business.libertymutual.com/commercial-solutions/ "Commercial Insurance Solutions")

[Liberty Mutual profile](https://spot.insure/insurance-providers/liberty-mutual)

## 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. [8](https://content.naic.org/glossary-insurance-terms "Glossary of Insurance Terms") [9](https://www.thehartford.com/management-liability-insurance "Management Liability Insurance") [10](https://www.chubb.com/us-en/business-insurance/forefront.html "The ForeFront Portfolio") [11](https://asset.trvstatic.com/download/assets/pdo-3001.pdf/d66bd58e63c911ee99d14294a32ecb95 "Private Company Directors and Officers Liability Coverage") [12](https://asset.trvstatic.com/download/assets/lia-3001.pdf/e79a6b6c63ca11eeaa7806e978c86228 "Liability Coverage Terms and Conditions") [13](https://asset.trvstatic.com/download/assets/pdo-1100w-ind.pdf/d44fa35c63c911eea5a70eda10c0a4d0 "Private Company Directors and Officers Liability Coverage Application")

## Key Differences in Management Liability Insurance

### Program Scope and Structure

Aon says it designs management-liability programs for professional partnerships, but does not say whether coverages sit in one contract or separate policies. Liberty Mutual describes ProShield as a single package combining D&O, employment-practices, fiduciary and crime coverage, intended to reduce the need for separate endorsements. For buyers who value one packaged contract, ProShield’s stated structure is clear; ask Aon whether its proposed program uses a package or coordinated standalone placements. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [6](https://business.libertymutual.com/commercial-insurance-solutions/management-liability/proshield/ "ProShield")

### Access, Terms and Fit

Liberty Mutual identifies private and nonprofit organizations as ProShield audiences and describes selected component features, while the public overview does not establish the terms, limits or exclusions of a specific policy. Aon names law, accounting and consulting firms and likewise leaves quote terms open. Liberty Mutual says its commercial products go through brokers and agents; Aon describes advisor support. Request the full form and component schedules from both before comparing protection. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [6](https://business.libertymutual.com/commercial-insurance-solutions/management-liability/proshield/ "ProShield")

## What to Confirm in Management Liability Insurance Quotes

- Ask Liberty Mutual which ProShield components and limits are included and how its exclusions apply. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [6](https://business.libertymutual.com/commercial-insurance-solutions/management-liability/proshield/ "ProShield")
- Ask Aon whether the placement is one policy or several and who issues each part. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [6](https://business.libertymutual.com/commercial-insurance-solutions/management-liability/proshield/ "ProShield")

## Offering Details

| Criteria | Aon Management Liability brokerage and risk-advisory offering | Liberty Mutual ProShield Management Liability |
| --- | --- | --- |
| 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. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (Evidence: Company-reported; scope: Aon’s global professional-services practice page. This establishes a marketed brokerage/advisory offering, not policy issuance or account-specific placement..) | Liberty Mutual markets ProShield as a management-liability package combining D&O, employment-practices, fiduciary and crime coverages. [6](https://business.libertymutual.com/commercial-insurance-solutions/management-liability/proshield/ "ProShield") [7](https://business.libertymutual.com/industries/professional-services/ "Professional services") (Evidence: Company-reported; scope: 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..) |
| 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. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (Evidence: Not found in reviewed sources; scope: 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..) | Confirm in your quote. |
| 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. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (Evidence: Company-reported; scope: Audience described for Aon’s global professional-services practice. It does not establish U.S. state availability or underwriting eligibility for a placement..) | The ProShield page identifies private and not-for-profit organizations as its intended audiences; industry-page listings do not establish universal eligibility. [6](https://business.libertymutual.com/commercial-insurance-solutions/management-liability/proshield/ "ProShield") [7](https://business.libertymutual.com/industries/professional-services/ "Professional services") (Evidence: Company-reported; scope: 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..) |
| 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. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (Evidence: Company-reported; scope: 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..) | The page describes selected features for the component lines, but does not establish the terms, limits or exclusions in an individual ProShield policy. [6](https://business.libertymutual.com/commercial-insurance-solutions/management-liability/proshield/ "ProShield") [7](https://business.libertymutual.com/industries/professional-services/ "Professional services") (Evidence: Company-reported; scope: 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..) |
| 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. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (Evidence: Not publicly disclosed; scope: Aon’s global practice page as reviewed 2026-09-30; no quote, bond form or issued policy was reviewed..) | The cited public overview does not establish the limits, deductibles, exclusions or form terms that would apply to a specific buyer. [6](https://business.libertymutual.com/commercial-insurance-solutions/management-liability/proshield/ "ProShield") [7](https://business.libertymutual.com/industries/professional-services/ "Professional services") (Evidence: Not publicly disclosed; scope: Ask for the quote and specimen or issued policy forms before treating a listed feature as covered..) |
| 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. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (Evidence: Company-reported; scope: Company-reported advisory services on Aon’s global practice page; account-specific service scope is not stated..) | Liberty Mutual describes ProShield as one package policy that combines multiple management-liability coverages and is designed to reduce the need for separate endorsements. [6](https://business.libertymutual.com/commercial-insurance-solutions/management-liability/proshield/ "ProShield") [7](https://business.libertymutual.com/industries/professional-services/ "Professional services") (Evidence: Company-reported; scope: 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..) |

## Full Comparison

- [Aon vs Liberty Mutual](https://spot.insure/compare/aon-vs-liberty-mutual): all coverage lines, business roles, service and claims.
- [What Is Management Liability Insurance?](https://spot.insure/coverage/management-liability): Management liability packages can combine D&O, employment-practices and fiduciary coverage, but each part can insure different people, claims and limits.
- [Aon vs Liberty Mutual Commercial Property Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/commercial-property)
- [Aon vs Liberty Mutual Crime Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/crime)
- [Aon vs Liberty Mutual Cyber Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/cyber)
- [Aon vs Liberty Mutual D&O Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/directors-officers)
- [Aon vs Liberty Mutual Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/employment-practices)
- [Aon vs Liberty Mutual Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/fiduciary)
- [Aon vs Liberty Mutual General Liability Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/general-liability)
- [Aon vs Liberty Mutual Kidnap and Ransom Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/kidnap-ransom)
- [Aon vs Liberty Mutual Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/professional-errors-omissions)
- [Aon vs Liberty Mutual Umbrella and Excess Liability Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/umbrella-excess)
- [Aon vs Liberty Mutual Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/workers-compensation)
- [AIG vs Aon Management Liability Insurance](https://spot.insure/compare/aig-vs-aon/management-liability)
- [AIG vs Liberty Mutual Management Liability Insurance](https://spot.insure/compare/aig-vs-liberty-mutual/management-liability)
- [Alliance Risk vs Aon Management Liability Insurance](https://spot.insure/compare/alliance-risk-vs-aon/management-liability)
- [Aon vs The Baldwin Group Management Liability Insurance](https://spot.insure/compare/aon-vs-baldwin/management-liability)
- [Aon vs Beazley Management Liability Insurance](https://spot.insure/compare/aon-vs-beazley/management-liability)
- [Aon vs CFC Management Liability Insurance](https://spot.insure/compare/aon-vs-cfc/management-liability)

## Sources

### Aon

1. [Commercial Risk Solutions U.S. Brokerage Terms of Service](https://www.aon.com/en/about/leadership-and-governance/brokerage-terms-of-service-for-commercial-risk-solutions-us). 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.
2. [Middle Market Clients](https://www.aon.com/en/capabilities/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.
3. [Professional Services Practice](https://www.aon.com/en/capabilities/risk-transfer/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.

### Liberty Mutual

4. [Company Profile](https://www.libertymutualgroup.com/about-lm/investor-relations/our-company/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.
5. [Commercial Insurance Solutions](https://business.libertymutual.com/commercial-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.
6. [ProShield](https://business.libertymutual.com/commercial-insurance-solutions/management-liability/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.
7. [Professional services](https://business.libertymutual.com/industries/professional-services/). Liberty Mutual Business Insurance; Opened September 29, 2026. Lines 129–138 list professional-services program coverages: GL with Services endorsement, property, commercial auto, workers compensation, umbrella/excess, D&O, professional liability, cyber, EPL and fidelity/crime. Lines 139–148 describe M&A transactional-liability solutions including representations and warranties, tax liability and contingent legal risk. These are professional-services industry positioning, not universal eligibility or standalone line terms; distribution and policy caveats at lines 164–176 and 234–236.. Accessed 2026-09-29.

### Management Liability Insurance Guide

8. [Glossary of Insurance Terms](https://content.naic.org/glossary-insurance-terms). National Association of Insurance Commissioners; Directors & Officers Liability; Employment Practices Liability Coverage; introductory scope note. Accessed 2026-09-16.
9. [Management Liability Insurance](https://www.thehartford.com/management-liability-insurance). The Hartford; What Is Management Liability Insurance?; Who Does Management Liability Insurance Protect. Accessed 2026-09-16.
10. [The ForeFront Portfolio](https://www.chubb.com/us-en/business-insurance/forefront.html). Chubb; Introduction; optional coverage parts; private, not-for-profit and healthcare portfolios. Accessed 2026-09-16.
11. [Private Company Directors and Officers Liability Coverage](https://asset.trvstatic.com/download/assets/pdo-3001.pdf/d66bd58e63c911ee99d14294a32ecb95). 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.
12. [Liability Coverage Terms and Conditions](https://asset.trvstatic.com/download/assets/lia-3001.pdf/e79a6b6c63ca11eeaa7806e978c86228). 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.
13. [Private Company Directors and Officers Liability Coverage Application](https://asset.trvstatic.com/download/assets/pdo-1100w-ind.pdf/d44fa35c63c911eea5a70eda10c0a4d0). 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.

Updated 2026-09-30. Spot, a product of Tools for Enlightenment, publishes this research and works in the commercial insurance market. The comparison applies the same criteria to both providers. [Editorial policy](https://spot.insure/editorial-policy). To suggest a correction, [contact Spot](https://spot.insure/contact) with the page URL and supporting source.

## Aon Reviews

Review Score: 6.1 / 10 from 3 rated sources, equally weighted.

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.

- J.D. Power: Aon study score 822 (out of 1000). Historical 2017 large-commercial-broker study; U.S. and Canada commercial insurance decision-makers at large organizations. J.D. Power reports 2,506 evaluations across the study, not Aon-specific responses; the Aon respondent count is not stated. Period: 2017 study; ranked 3rd among large commercial brokers; study-wide population 2,506, not Aon review count. Checked 2026-09-29. [Diversity of Offerings Becomes Key Differentiator for Large Commercial Insurers, JD Power Finds](https://www.jdpower.com/business/press-releases/jd-power-2017-large-commercial-insurance-study)
- Trustpilot: TrustScore 1.2 (out of 5); 782 reviews. Global www.aon.com profile merged with other Aon profiles; mixed experiences include pensions, travel, professional indemnity and Australian business quotation service. The two latter complaints are individual unverified allegations, not evidence of U.S. commercial-placement outcomes or insurer fault. Trustpilot says reviews may not be representative because the company has not recently invited reviews. Period: Displayed 2026-09-29; page separately showed 198 reviews in the last 12 months. Checked 2026-09-29. [Aon Reviews](https://www.trustpilot.com/review/www.aon.com)
- BBB: BBB business grade B− (BBB letter grade; stated reason: failure to respond to two filed complaints). BBB of Chicago & Northern Illinois profile for Aon plc; the business grade is BBB’s own measure, not customer stars. Checked 2026-09-29. [Aon plc | BBB Business Profile](https://www.bbb.org/us/il/chicago/profile/insurance-companies/aon-plc-0654-5291)
- BBB: BBB customer review average 1.6 (out of 5); 5 reviews. BBB of Chicago & Northern Illinois customer reviews for Aon plc; some reviews are about employee-benefit and medical-expense issues. Period: checked 2026-09-29. Checked 2026-09-29. [Aon plc | BBB Reviews](https://www.bbb.org/us/il/chicago/profile/insurance-companies/aon-plc-0654-5291/customer-reviews)

Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/aon/reviews).

## Liberty Mutual Reviews

Review Score: 7.2 / 10 from 2 rated sources, equally weighted.

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.

- NerdWallet: NerdWallet editorial rating 3.0/5 (NerdWallet proprietary editorial score; not a consumer rating average or Spot Score). NerdWallet business-insurance editorial review, updated June 3, 2026. Its 3.0/5 is NerdWallet’s editorial score, not a consumer average or Spot Rating. It reports above-expected commercial-property and general-liability complaints for 2022–2024 and a low J.D. Power result. Period: Page updated June 3, 2026. Checked 2026-09-29. [Liberty Mutual Business Insurance Review 2026: Big Company Dogged by Customer Complaints](https://www.nerdwallet.com/business/insurance/learn/liberty-mutual-business-insurance)
- Trustpilot: Trustpilot consumer TrustScore 4.2/5 (Platform aggregate for a mixed Liberty Mutual brand profile; not business-only); 3836 reviews. Company-wide Liberty Mutual Trustpilot profile. Its description highlights auto, home and life insurance; review excerpts are not restricted to commercial buyers or one issuing entity. The displayed score/count are a consumer-review-site aggregate, separate from editorial ratings and survey data. Period: Displayed September 29, 2026; live total changes. Checked 2026-09-29. [Liberty Mutual Reviews](https://www.trustpilot.com/review/www.libertymutual.com)

Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/liberty-mutual/reviews).

## Agent and Developer Resources

- [Markdown page](https://spot.insure/compare/aon-vs-liberty-mutual/management-liability.md)
- [Developer resources](https://spot.insure/developers)
- [Public MCP server](https://spot.insure/mcp)
- [MCP server manifest](https://spot.insure/server.json)
- [OpenAPI description](https://spot.insure/openapi.json)
- [Public page index](https://spot.insure/llms.txt)