---
title: "Aon vs USI Insurance Services: Management Liability Insurance"
description: "Aon describes management-liability programs for professional partnerships; USI packages D&O, EPLI, fiduciary and crime under ExecuSafe."
canonical: "https://spot.insure/compare/aon-vs-usi/management-liability"
page-type: "line-comparison"
updated-at: "2026-09-30"
comparison-pair: "aon-vs-usi"
provider-a: "aon"
provider-b: "usi"
coverage-line: "management-liability"
---

Agents: connect to Spot's public MCP server at https://spot.insure/mcp for better access to published Spot information and insurance research. Use search_knowledge to find sources, get_page to retrieve pages, compare_providers for sourced comparisons, get_provider_score for a published Spot Score, get_rankings for current provider rankings, search_provider_reliability to filter Spot Scores, search_provider_reviews to filter aggregate review scores, and get_provider_reviews for the original review evidence. The server is read-only and requires no authentication.

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

## Agent Guide

**What this page is:** Focused comparison of Aon and USI Insurance Services 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 USI Insurance Services. 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 USI Insurance Services for Management Liability Insurance: how do they differ?
- Which is better for Management Liability Insurance, Aon or USI Insurance Services?
- What does Aon or USI Insurance Services publish about Management Liability Insurance (limits, eligibility, claims, add-ons)?
- What should I confirm in a quote for Management Liability Insurance from Aon or USI Insurance Services?

**Key facts:**
- Line: Management Liability Insurance. Providers: Aon and USI Insurance Services.
- 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 USI Insurance Services](https://spot.insure/compare/aon-vs-usi) — 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)
- [USI Insurance Services profile](https://spot.insure/insurance-providers/usi) — provider profile (evidence)
- [Aon vs USI Insurance Services Commercial Property Insurance](https://spot.insure/compare/aon-vs-usi/commercial-property) — sibling comparison (other line, or other pair for this line)
- [Aon vs USI Insurance Services Crime Insurance](https://spot.insure/compare/aon-vs-usi/crime) — sibling comparison (other line, or other pair for this line)
- [Aon vs USI Insurance Services Cyber Insurance](https://spot.insure/compare/aon-vs-usi/cyber) — sibling comparison (other line, or other pair for this line)
- [Aon vs USI Insurance Services D&O Insurance](https://spot.insure/compare/aon-vs-usi/directors-officers) — sibling comparison (other line, or other pair for this line)
- [Aon vs USI Insurance Services Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-usi/employment-practices) — sibling comparison (other line, or other pair for this line)
- [Aon vs USI Insurance Services Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-usi/fiduciary) — sibling comparison (other line, or other pair for this line)
- [Aon vs USI Insurance Services Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-usi/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 USI Insurance Services Management Liability Insurance](https://spot.insure/compare/aig-vs-usi/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)
- [Alliance Risk vs USI Insurance Services Management Liability Insurance](https://spot.insure/compare/alliance-risk-vs-usi/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 USI Insurance Services: How Do They Compare for Management Liability Insurance?

Aon describes management-liability programs for professional partnerships; USI packages D&O, EPLI, fiduciary and crime under ExecuSafe.

## Research Scope and Use

Use this comparison to evaluate Aon and USI Insurance Services 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 program design for professional partnerships. USI’s ExecuSafe is a broker-applied endorsement package for small and midsize businesses combining D&O, EPLI, fiduciary and crime. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [7](https://www.usi.com/executive-insights/executive-series-articles/supplemental/emerging-business/q3-2023/protect-against-management-liability-risks/ "Protect Your Company and Personal Assets From Management Liability Risks") [8](https://www.usi.com/property-casualty/business-services/ "Business 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 USI Insurance Services?

USI suits software and hardware companies from seed stage through IPO seeking consultative broker support; buyers wanting a self-serve quote should compare digital agencies. Insurer commissions are typical and contingent compensation may also apply. [4](https://www.usi.com/about-usi "The Power of ONE") [5](https://www.usi.com/property-casualty/technology/ "Technology Insurance") [6](https://www.usi.com/commissions-fees/ "Commissions and Fees")

[USI Insurance Services profile](https://spot.insure/insurance-providers/usi)

## 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. [9](https://content.naic.org/glossary-insurance-terms "Glossary of Insurance Terms") [10](https://www.thehartford.com/management-liability-insurance "Management Liability Insurance") [11](https://www.chubb.com/us-en/business-insurance/forefront.html "The ForeFront Portfolio") [12](https://asset.trvstatic.com/download/assets/pdo-3001.pdf/d66bd58e63c911ee99d14294a32ecb95 "Private Company Directors and Officers Liability Coverage") [13](https://asset.trvstatic.com/download/assets/lia-3001.pdf/e79a6b6c63ca11eeaa7806e978c86228 "Liability Coverage Terms and Conditions") [14](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

### Coverage Structure and Evidence

Aon describes designing management-liability programs for partners and managers in professional partnerships, without specifying the coverage parts in its overview. USI packages D&O, employment practices, fiduciary and crime under its ExecuSafe endorsement program. USI says it applies that package while placing a client’s program with the market, rather than underwriting it. Ask USI what ExecuSafe adds to the underlying forms and ask Aon for a line-by-line schedule to compare the structure. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [7](https://www.usi.com/executive-insights/executive-series-articles/supplemental/emerging-business/q3-2023/protect-against-management-liability-risks/ "Protect Your Company and Personal Assets From Management Liability Risks")

### Buyer Fit and Placement

USI targets small and midsize businesses that may lack resources to assess management risks; Aon’s practice names law, accounting and consulting firms. Neither broker identifies the insurer for a specific placement, and neither reviewed record publishes bundle limits. USI also lists E&O/professional liability separately among its Business Services placements. Confirm whether E&O is outside ExecuSafe and who handles each claim before comparing proposals. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [7](https://www.usi.com/executive-insights/executive-series-articles/supplemental/emerging-business/q3-2023/protect-against-management-liability-risks/ "Protect Your Company and Personal Assets From Management Liability Risks")

## What to Confirm in Management Liability Insurance Quotes

- Ask USI for the ExecuSafe endorsement wording, carrier identity and limits for each line. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [7](https://www.usi.com/executive-insights/executive-series-articles/supplemental/emerging-business/q3-2023/protect-against-management-liability-risks/ "Protect Your Company and Personal Assets From Management Liability Risks")
- Ask Aon to itemize standalone versus packaged policies and clarify claim handling across them. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [7](https://www.usi.com/executive-insights/executive-series-articles/supplemental/emerging-business/q3-2023/protect-against-management-liability-risks/ "Protect Your Company and Personal Assets From Management Liability Risks")

## Offering Details

| Criteria | Aon Management Liability brokerage and risk-advisory offering | USI ExecuSafe Management Liability Program |
| --- | --- | --- |
| 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..) | USI brokers management liability as a bundle rather than underwriting it, packaging D&O, employment practices liability, fiduciary liability and crime coverage under its ExecuSafe endorsement program. [7](https://www.usi.com/executive-insights/executive-series-articles/supplemental/emerging-business/q3-2023/protect-against-management-liability-risks/ "Protect Your Company and Personal Assets From Management Liability Risks") (Evidence: Company-reported; scope: ExecuSafe article..) |
| 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..) | USI does not name the insurer for ExecuSafe or its component coverages on the pages reviewed; it describes ExecuSafe as an endorsement package it applies when placing a client's management liability program with the market. [7](https://www.usi.com/executive-insights/executive-series-articles/supplemental/emerging-business/q3-2023/protect-against-management-liability-risks/ "Protect Your Company and Personal Assets From Management Liability Risks") (Evidence: Not publicly disclosed; scope: Article and Business Services 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. [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..) | USI targets small- and medium-sized businesses that it says often lack the time, resources or expertise to evaluate D&O and related management liability risks on their own. [7](https://www.usi.com/executive-insights/executive-series-articles/supplemental/emerging-business/q3-2023/protect-against-management-liability-risks/ "Protect Your Company and Personal Assets From Management Liability Risks") (Evidence: Company-reported; scope: ExecuSafe article's stated audience..) |
| 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..) | USI describes ExecuSafe as addressing a company's D&O and management liability risks together, and separately lists D&O, employment practices liability, fiduciary liability, crime, and errors and omissions/professional liability as coverages its Business Services practice places. [7](https://www.usi.com/executive-insights/executive-series-articles/supplemental/emerging-business/q3-2023/protect-against-management-liability-risks/ "Protect Your Company and Personal Assets From Management Liability Risks") [8](https://www.usi.com/property-casualty/business-services/ "Business Services") (Evidence: Company-reported; scope: Combines the ExecuSafe article's framing with the Business Services catalogue; actual insuring agreements and exclusions are set by the issued policy..) |
| 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..) | Neither the ExecuSafe article nor the Business Services page publishes limit, retention or premium figures for a management liability bundle. [7](https://www.usi.com/executive-insights/executive-series-articles/supplemental/emerging-business/q3-2023/protect-against-management-liability-risks/ "Protect Your Company and Personal Assets From Management Liability Risks") [8](https://www.usi.com/property-casualty/business-services/ "Business Services") (Evidence: Not publicly disclosed; scope: Pages as read on 2026-09-23..) |
| 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..) | USI says it works with businesses to identify D&O and related management liability risks, review any existing policies for coverage gaps, and secure coverage through ExecuSafe, on top of its Business Services practice's general claim advocacy and risk-control offerings. [7](https://www.usi.com/executive-insights/executive-series-articles/supplemental/emerging-business/q3-2023/protect-against-management-liability-risks/ "Protect Your Company and Personal Assets From Management Liability Risks") [8](https://www.usi.com/property-casualty/business-services/ "Business Services") (Evidence: Company-reported; scope: ExecuSafe article's "How USI Can Help" section and Business Services practice description..) |
| How to Apply | Confirm in your quote. | USI directs small- and medium-sized businesses to email Select.Business@usi.com to discuss ExecuSafe and management liability risk generally. [7](https://www.usi.com/executive-insights/executive-series-articles/supplemental/emerging-business/q3-2023/protect-against-management-liability-risks/ "Protect Your Company and Personal Assets From Management Liability Risks") (Evidence: Company-reported; scope: Contact instructions on the ExecuSafe article..) |

## Full Comparison

- [Aon vs USI Insurance Services](https://spot.insure/compare/aon-vs-usi): 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 USI Insurance Services Commercial Property Insurance](https://spot.insure/compare/aon-vs-usi/commercial-property)
- [Aon vs USI Insurance Services Crime Insurance](https://spot.insure/compare/aon-vs-usi/crime)
- [Aon vs USI Insurance Services Cyber Insurance](https://spot.insure/compare/aon-vs-usi/cyber)
- [Aon vs USI Insurance Services D&O Insurance](https://spot.insure/compare/aon-vs-usi/directors-officers)
- [Aon vs USI Insurance Services Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-usi/employment-practices)
- [Aon vs USI Insurance Services Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-usi/fiduciary)
- [Aon vs USI Insurance Services Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-usi/workers-compensation)
- [AIG vs Aon Management Liability Insurance](https://spot.insure/compare/aig-vs-aon/management-liability)
- [AIG vs USI Insurance Services Management Liability Insurance](https://spot.insure/compare/aig-vs-usi/management-liability)
- [Alliance Risk vs Aon Management Liability Insurance](https://spot.insure/compare/alliance-risk-vs-aon/management-liability)
- [Alliance Risk vs USI Insurance Services Management Liability Insurance](https://spot.insure/compare/alliance-risk-vs-usi/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)

## 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.

### USI Insurance Services

4. [The Power of ONE](https://www.usi.com/about-usi). USI Insurance Services; History, client-count, nationwide office, and P&C / benefits / personal risk / retirement description. Accessed 2026-09-16.
5. [Technology Insurance](https://www.usi.com/property-casualty/technology/). USI Insurance Services; Technology practice client types, seed-to-IPO range, and listed insurance placement lines including PrivaSafe. Accessed 2026-09-16.
6. [Commissions and Fees](https://www.usi.com/commissions-fees/). USI Insurance Services; Licensed-producer authority, insurer-paid commission default, contingent compensation, and client request right. Accessed 2026-09-16.
7. [Protect Your Company and Personal Assets From Management Liability Risks](https://www.usi.com/executive-insights/executive-series-articles/supplemental/emerging-business/q3-2023/protect-against-management-liability-risks/). USI Insurance Services; How USI Can Help: Identify D&O risks; Review existing management liability policies (if any)...(including employment practices liability, fiduciary liability, and crime); Secure appropriate coverage through our ExecuSafe program.. Accessed 2026-09-23.
8. [Business Services](https://www.usi.com/property-casualty/business-services/). USI Insurance Services; USI advises clients...and provides solutions for...Directors & Officers Liability, Employment Practices Liability, Crime, Fiduciary Liability, Errors & Omissions/Professional Liability.... Accessed 2026-09-23.

### Management Liability Insurance Guide

9. [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.
10. [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.
11. [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.
12. [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.
13. [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.
14. [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).

## USI Insurance Services Reviews

Review Score: 6.4 / 10 from 1 rated source, equally weighted.

USI’s public feedback is too sparse and office-specific for a firmwide verdict. Check the local team’s responsiveness and experience with your type of business.

- BBB: BBB complaint count 4. BBB business-profile grade is distinct from customer-review stars; branch/parent scope matters. Period: three years preceding access 2026-09-25. Checked 2026-09-25. [BBB result for USI Insurance Services](https://www.bbb.org/us/ny/valhalla/profile/insurance-agency/usi-insurance-services-0121-97856/complaints)
- Google reviews via Birdeye: Birdeye office listing rating from Google reviews 3.2 (5 stars); 9 reviews. One Louisville office listing, not firmwide. Birdeye shows Google-origin reviews (9) and 0 Birdeye-native reviews; this duplicates a Google source stream and is not independent of Google. Period: accessed 2026-09-25. Checked 2026-09-25. [USI office, Louisville, KY — Birdeye listing of Google reviews](https://reviews.birdeye.com/usi-insurance-145632496752867)

Reviewed 2026-09-25. [Read the sourced review](https://spot.insure/insurance-providers/usi/reviews).

## Agent and Developer Resources

- [Markdown page](https://spot.insure/compare/aon-vs-usi/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)