---
title: "Aon vs USI Insurance Services: Workers’ Compensation Insurance"
description: "USI Insurance Services cites workers’ comp claims-trend analysis, workplace studies and safety changes in a case study; Aon describes construction risk advisory."
canonical: "https://spot.insure/compare/aon-vs-usi/workers-compensation"
page-type: "line-comparison"
updated-at: "2026-09-30"
comparison-pair: "aon-vs-usi"
provider-a: "aon"
provider-b: "usi"
coverage-line: "workers-compensation"
---

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/workers-compensation)

## Agent Guide

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

**Key facts:**
- Line: Workers’ Compensation 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
- [Workers’ Compensation Insurance guide](https://spot.insure/coverage/workers-compensation) — 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 Management Liability Insurance](https://spot.insure/compare/aon-vs-usi/management-liability) — sibling comparison (other line, or other pair for this line)
- [AIG vs Aon Workers’ Compensation Insurance](https://spot.insure/compare/aig-vs-aon/workers-compensation) — sibling comparison (other line, or other pair for this line)
- [AIG vs USI Insurance Services Workers’ Compensation Insurance](https://spot.insure/compare/aig-vs-usi/workers-compensation) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Aon Workers’ Compensation Insurance](https://spot.insure/compare/alliance-risk-vs-aon/workers-compensation) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs USI Insurance Services Workers’ Compensation Insurance](https://spot.insure/compare/alliance-risk-vs-usi/workers-compensation) — sibling comparison (other line, or other pair for this line)
- [Amelia Risk vs Aon Workers’ Compensation Insurance](https://spot.insure/compare/amelia-risk-vs-aon/workers-compensation) — sibling comparison (other line, or other pair for this line)
- [Amelia Risk vs USI Insurance Services Workers’ Compensation Insurance](https://spot.insure/compare/amelia-risk-vs-usi/workers-compensation) — sibling comparison (other line, or other pair for this line)

# Aon vs USI Insurance Services: How Do They Compare for Workers’ Compensation Insurance?

USI Insurance Services cites workers’ comp claims-trend analysis, workplace studies and safety changes in a case study; Aon describes construction risk advisory.

## Research Scope and Use

Use this comparison to evaluate Aon and USI Insurance Services for Workers’ Compensation 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

USI Insurance Services cites workers’ comp claims-trend analysis, workplace studies and safety changes in a case study; Aon describes construction risk advisory. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [8](https://www.usi.com/property-casualty/private-equity "Private Equity")

## 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 Workers’ Compensation Insurance?

Workers’ compensation can pay medical care and part of an employee’s lost wages after a work-related injury or illness. If you have staff, check who is covered in each state; owners, contractors and some workers may be treated differently. [10](https://content.naic.org/insurance-topics/workers%27-compensation-insurance "Workers’ Compensation Insurance") [11](https://content.naic.org/consumer/small-business.htm "Small Business Insurance") [12](https://www.dir.ca.gov/dwc/Employer.htm "DWC employer information") [13](https://www.tdi.texas.gov/wc/employer/index.html "Employer resources")

## Key Differences in Workers’ Compensation Insurance

### Construction Practice and Middle-Market Advisory

Aon describes a global construction practice serving contractors, owners, engineers and project participants. USI Insurance Services places workers’ comp across property and casualty, private equity and healthcare practices, with its P&C group serving middle-market clients. A construction buyer can compare Aon’s sector framing with USI Insurance Services’s middle-market and specialist routes. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [7](https://www.usi.com/property-casualty "P&C Insurance and Risk Consulting")

### Claims Analysis and Safety Work

USI Insurance Services cites a case where its team analyzed workers’ comp claim trends, ran ergonomics and environmental studies, then helped implement new safety procedures within 90 days. Aon describes project risk advice but no workers’ comp case example. USI Insurance Services’s reported outcome is company-reported; ask what similar analysis is available for the account. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [7](https://www.usi.com/property-casualty "P&C Insurance and Risk Consulting")

### Engagement and Carrier

USI Insurance Services directs inquiries to its P&C email or a local office; Aon describes global broking without a specific quote route. Neither record names the eventual insurer. Request carrier identity and who will manage claims support. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [7](https://www.usi.com/property-casualty "P&C Insurance and Risk Consulting")

## What to Confirm in Workers’ Compensation Insurance Quotes

- Ask USI Insurance Services whether claim-trend and safety analysis applies to your workforce and what thresholds or fees apply. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [7](https://www.usi.com/property-casualty "P&C Insurance and Risk Consulting")
- Ask Aon which markets it will approach and who owns the workers’ comp submission. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [7](https://www.usi.com/property-casualty "P&C Insurance and Risk Consulting")

## Offering Details

| Criteria | Aon Workers’ Compensation brokerage and risk-advisory offering | USI Workers' Compensation Brokerage |
| --- | --- | --- |
| Role in This Line | Aon says its global construction practice designs and places risk solutions and uses broking experience and a global network across construction insurance lines. For workers’ compensation, this is evidence of Aon’s brokered market offering; the page does not identify the insurer for a buyer’s placement. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") (Evidence: Company-reported; scope: Aon’s global construction and infrastructure practice page. This establishes a marketed brokerage/advisory offering, not policy issuance or account-specific placement..) | USI is a broker for workers' compensation insurance. It advises on and places coverage across its property & casualty, private equity and healthcare practices rather than underwriting the risk itself. [7](https://www.usi.com/property-casualty "P&C Insurance and Risk Consulting") [8](https://www.usi.com/property-casualty/private-equity "Private Equity") [9](https://www.usi.com/property-casualty/healthcare/ "Healthcare") (Evidence: Company-reported; scope: Property & Casualty, Private Equity and Healthcare practice pages..) |
| 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/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") (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..) | None of the reviewed pages names the insurer USI uses for workers' compensation placements. [7](https://www.usi.com/property-casualty "P&C Insurance and Risk Consulting") (Evidence: Not publicly disclosed; scope: Pages as read on 2026-09-23..) |
| Who It’s For | Aon describes its global construction and infrastructure practice as serving contractors, owners, developers, engineers, architects, designers, financiers and investors, and says it works with organizations of varied sizes and complexity. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") (Evidence: Company-reported; scope: Audience described for Aon’s global construction and infrastructure practice. It does not establish U.S. state availability or underwriting eligibility for a placement..) | USI's property & casualty team serves middle-market clients broadly; its Private Equity practice separately handles workers' compensation for portfolio companies of financial and strategic buyers, and its Healthcare practice covers hospitals, physician groups and related facilities. [7](https://www.usi.com/property-casualty "P&C Insurance and Risk Consulting") [8](https://www.usi.com/property-casualty/private-equity "Private Equity") [9](https://www.usi.com/property-casualty/healthcare/ "Healthcare") (Evidence: Company-reported; scope: Company description of client segments for each practice..) |
| Coverage Features | Aon lists Workers’ Compensation Insurance among the construction coverage areas it brokers. The page does not describe state-specific statutory benefits, employer-liability terms or how a buyer’s policy responds. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") (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 lists Workers' Compensation among the risk exposures its property & casualty team advises on, and separately among the specialty coverages its Healthcare practice places. [7](https://www.usi.com/property-casualty "P&C Insurance and Risk Consulting") [9](https://www.usi.com/property-casualty/healthcare/ "Healthcare") (Evidence: Company-reported; scope: Catalogue listings; actual insuring agreements and state-specific requirements 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/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") (Evidence: Not publicly disclosed; scope: Aon’s global practice page as reviewed 2026-09-30; no quote, bond form or issued policy was reviewed..) | None of the reviewed pages publishes workers' compensation limit or experience-modifier target figures beyond the outcome of one named case study. [7](https://www.usi.com/property-casualty "P&C Insurance and Risk Consulting") (Evidence: Not publicly disclosed; scope: Pages as read on 2026-09-23..) |
| Risk Services | Aon describes project risk-advisory services to understand project-specific risks and develop risk-transfer, management or mitigation strategies. It also describes a global construction team and market access. These are company-reported brokerage and advisory services, not coverage benefits. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") (Evidence: Company-reported; scope: Company-reported advisory services on Aon’s global practice page; account-specific service scope is not stated..) | USI's Private Equity Team cites a case study where it analyzed a manufacturing affiliate's workers' compensation claim trends, ran ergonomics, air-quality and sound-level studies, and helped implement new safety procedures within 90 days; USI says the combined insurance-cost and productivity improvements totaled $1.2 million in EBITDA impact. [8](https://www.usi.com/property-casualty/private-equity "Private Equity") (Evidence: Company-reported; scope: Single named case study on the Private Equity page; company-reported outcome, not independently verified, and not necessarily representative of every account..) |
| How to Apply | Confirm in your quote. | USI directs workers' compensation inquiries to pcinquiries@usi.com or a local USI office. [7](https://www.usi.com/property-casualty "P&C Insurance and Risk Consulting") [8](https://www.usi.com/property-casualty/private-equity "Private Equity") [9](https://www.usi.com/property-casualty/healthcare/ "Healthcare") (Evidence: Company-reported; scope: Contact instructions on the Property & Casualty, Private Equity and Healthcare pages..) |

## Full Comparison

- [Aon vs USI Insurance Services](https://spot.insure/compare/aon-vs-usi): all coverage lines, business roles, service and claims.
- [What Is Workers’ Compensation Insurance?](https://spot.insure/coverage/workers-compensation): Workers’ compensation can pay medical care, rehabilitation and lost wages after an employee’s work-related injury or illness; state rules determine who must be covered.
- [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 Management Liability Insurance](https://spot.insure/compare/aon-vs-usi/management-liability)
- [AIG vs Aon Workers’ Compensation Insurance](https://spot.insure/compare/aig-vs-aon/workers-compensation)
- [AIG vs USI Insurance Services Workers’ Compensation Insurance](https://spot.insure/compare/aig-vs-usi/workers-compensation)
- [Alliance Risk vs Aon Workers’ Compensation Insurance](https://spot.insure/compare/alliance-risk-vs-aon/workers-compensation)
- [Alliance Risk vs USI Insurance Services Workers’ Compensation Insurance](https://spot.insure/compare/alliance-risk-vs-usi/workers-compensation)
- [Amelia Risk vs Aon Workers’ Compensation Insurance](https://spot.insure/compare/amelia-risk-vs-aon/workers-compensation)
- [Amelia Risk vs USI Insurance Services Workers’ Compensation Insurance](https://spot.insure/compare/amelia-risk-vs-usi/workers-compensation)

## 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. [Construction and Infrastructure Insurance and Risk Management](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management). Aon; Construction client audience and global placement role, lines 123–126; offering descriptions lines 135–156; coverage-area taxonomy lines 167–195; 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. [P&C Insurance and Risk Consulting](https://www.usi.com/property-casualty). USI Insurance Services; risk management and insurance advice on broad risk exposures such as Workers' Compensation...; casualty analysts...claim advocates...risk control specialists.... Accessed 2026-09-23.
8. [Private Equity](https://www.usi.com/property-casualty/private-equity). USI Insurance Services; CASE STUDY: USI's Workers' Compensation Claim Analysis and Safety Improvements Save Manufacturer $1.2 Million. Accessed 2026-09-23.
9. [Healthcare](https://www.usi.com/property-casualty/healthcare/). USI Insurance Services; USI's Healthcare Practice offers specialty coverages...including...Workers' Compensation Insurance.... Accessed 2026-09-23.

### Workers’ Compensation Insurance Guide

10. [Workers’ Compensation Insurance](https://content.naic.org/insurance-topics/workers%27-compensation-insurance). National Association of Insurance Commissioners; Opening definition; mandatory coverage except Texas opt-in; exclusive remedy; monopolistic state funds; self-insurance note. Accessed 2026-09-16.
11. [Small Business Insurance](https://content.naic.org/consumer/small-business.htm). National Association of Insurance Commissioners; Typically covers medical expenses, rehabilitation costs and lost wages; check with your state insurance department; ask these questions / who qualifies as a covered employee (contractors, part-time staff, interns); payroll and type-of-work rating factors. Accessed 2026-09-16.
12. [DWC employer information](https://www.dir.ca.gov/dwc/Employer.htm). California Department of Industrial Relations, Division of Workers’ Compensation; Opening trade-off and California requirement; basic benefits including medical care, temporary and permanent disability, supplemental job displacement, return-to-work supplement and death benefits; out-of-state employer note. Accessed 2026-09-16.
13. [Employer resources](https://www.tdi.texas.gov/wc/employer/index.html). Texas Department of Insurance, Division of Workers’ Compensation; In Texas, private employers can choose to carry workers’ compensation insurance coverage, but it is not required in most cases; lost wages and medical benefits; except when gross negligence results in a fatality, coverage limits liability. 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/workers-compensation.md)
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- [Public MCP server](https://spot.insure/mcp)
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