---
title: "Aon vs Gallagher: Workers’ Compensation Insurance"
description: "Gallagher Small Business offers online, phone and callback quote routes and lists injury-related costs; Aon describes a global construction practice."
canonical: "https://spot.insure/compare/aon-vs-gallagher/workers-compensation"
page-type: "line-comparison"
updated-at: "2026-09-30"
comparison-pair: "aon-vs-gallagher"
provider-a: "aon"
provider-b: "gallagher"
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-gallagher/workers-compensation)

## Agent Guide

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

**Key facts:**
- Line: Workers’ Compensation Insurance. Providers: Aon and Gallagher.
- 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 Gallagher](https://spot.insure/compare/aon-vs-gallagher) — 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)
- [Gallagher profile](https://spot.insure/insurance-providers/gallagher) — provider profile (evidence)
- [Aon vs Gallagher Commercial Property Insurance](https://spot.insure/compare/aon-vs-gallagher/commercial-property) — sibling comparison (other line, or other pair for this line)
- [Aon vs Gallagher Crime Insurance](https://spot.insure/compare/aon-vs-gallagher/crime) — sibling comparison (other line, or other pair for this line)
- [Aon vs Gallagher Cyber Insurance](https://spot.insure/compare/aon-vs-gallagher/cyber) — sibling comparison (other line, or other pair for this line)
- [Aon vs Gallagher D&O Insurance](https://spot.insure/compare/aon-vs-gallagher/directors-officers) — sibling comparison (other line, or other pair for this line)
- [Aon vs Gallagher Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-gallagher/employment-practices) — sibling comparison (other line, or other pair for this line)
- [Aon vs Gallagher Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-gallagher/fiduciary) — sibling comparison (other line, or other pair for this line)
- [Aon vs Gallagher General Liability Insurance](https://spot.insure/compare/aon-vs-gallagher/general-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs Gallagher Kidnap and Ransom Insurance](https://spot.insure/compare/aon-vs-gallagher/kidnap-ransom) — sibling comparison (other line, or other pair for this line)
- [Aon vs Gallagher Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-gallagher/professional-errors-omissions) — 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 Gallagher Workers’ Compensation Insurance](https://spot.insure/compare/aig-vs-gallagher/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 Gallagher Workers’ Compensation Insurance](https://spot.insure/compare/alliance-risk-vs-gallagher/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 Gallagher Workers’ Compensation Insurance](https://spot.insure/compare/amelia-risk-vs-gallagher/workers-compensation) — sibling comparison (other line, or other pair for this line)

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

Gallagher Small Business offers online, phone and callback quote routes and lists injury-related costs; Aon describes a global construction practice.

## Research Scope and Use

Use this comparison to evaluate Aon and Gallagher 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

Gallagher Small Business offers online, phone and callback quote routes and lists injury-related costs; Aon describes a global construction practice. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [9](https://www.gallaghersmallbusiness.com/insurance-products/workers-compensation/ "Workers' Compensation Insurance")

## 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 Gallagher?

Gallagher’s technology specialists serve startups through global enterprises, while its executive-risk team supports IPO and M&A needs; small firms seeking one simple digital quote should compare online agencies. [4](https://www.ajg.com/industries/technology-insurance/ "Technology Insurance") [5](https://www.gallaghersmallbusiness.com/technology-services/ "Insurance for Technology & IT Businesses") [6](https://www.ajg.com/insurance/executive-and-financial-risk-insurance/ "Executive and Financial Risk Insurance") [7](https://www.gallaghersmallbusiness.com/legal-information/ "Legal Information") [8](https://www.ajg.com/merger-partners/woodruff-sawyer-is-now-gallagher/ "Woodruff Sawyer Is Now Gallagher")

[Gallagher profile](https://spot.insure/insurance-providers/gallagher)

## 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 Risk Practice and Small Business Placement

Aon describes construction broking and project risk advice for contractors, owners and engineers. Gallagher Small Business arranges workers’ comp through partner carriers and offers an online quote, phone support and callback request. A construction employer can compare project-level advice with Gallagher’s small-business contact routes. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [9](https://www.gallaghersmallbusiness.com/insurance-products/workers-compensation/ "Workers' Compensation Insurance")

### Benefits and State Rules

Gallagher lists medical and wage costs, retraining, related legal fees and temporary replacement wages. It says employee thresholds vary by state and notes Texas allows employers to opt out, with potential suit exposure. Aon lists workers’ comp but does not describe benefits or state requirements; confirm local rules and consequences. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [9](https://www.gallaghersmallbusiness.com/insurance-products/workers-compensation/ "Workers' Compensation Insurance")

### Starting a Quote

Gallagher gives buyers multiple ways to start, while Aon describes a global construction practice without application steps. Ask who gathers payroll, class and loss information and whether the submission fits the account’s project operations. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [9](https://www.gallaghersmallbusiness.com/insurance-products/workers-compensation/ "Workers' Compensation Insurance")

## What to Confirm in Workers’ Compensation Insurance Quotes

- Ask Gallagher which partner carrier quotes the class and how state employee thresholds apply. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [9](https://www.gallaghersmallbusiness.com/insurance-products/workers-compensation/ "Workers' Compensation Insurance")
- Ask Aon for its submission checklist and who manages the quote. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [9](https://www.gallaghersmallbusiness.com/insurance-products/workers-compensation/ "Workers' Compensation Insurance")

## Offering Details

| Criteria | Aon Workers’ Compensation brokerage and risk-advisory offering | Gallagher Small Business Workers' Compensation Insurance |
| --- | --- | --- |
| 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..) | Gallagher Small Business arranges workers' compensation coverage with partner carriers rather than underwriting the policy itself. [9](https://www.gallaghersmallbusiness.com/insurance-products/workers-compensation/ "Workers' Compensation Insurance") (Evidence: Company-reported; scope: Gallagher Small Business's direct-to-small-business workers' compensation product page..) |
| 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..) | The workers' compensation product page does not name the insurer that would issue a given business's policy. [9](https://www.gallaghersmallbusiness.com/insurance-products/workers-compensation/ "Workers' Compensation Insurance") (Evidence: Not publicly disclosed; scope: Checked the workers' compensation product page 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..) | Gallagher says workers' compensation is typically mandated by state law based on employee count, which varies by state, and notes that Texas allows employers to opt out, though an employer can still be sued if an employee is hurt. It says any business with employees most likely needs a policy. [9](https://www.gallaghersmallbusiness.com/insurance-products/workers-compensation/ "Workers' Compensation Insurance") (Evidence: Company-reported; scope: Product page eligibility and market-trends sections; actual state requirements should be confirmed for the buyer's location..) |
| 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..) | Gallagher describes workers' compensation as covering medical costs and lost wages from a workplace injury or illness, costs to retrain a returning injured employee, related legal fees, and wages for a temporary replacement worker. [9](https://www.gallaghersmallbusiness.com/insurance-products/workers-compensation/ "Workers' Compensation Insurance") (Evidence: Company-reported; scope: Product page coverage overview; the issued policy and its exclusions control..)<br><br>Gallagher lists overexertion, slips/trips/falls, electrocution, being struck by or against objects, transportation incidents, machinery accidents, unintentional overdoses, workplace violence, and exposure to harmful substances as the top workers' compensation claim causes it tracks. [9](https://www.gallaghersmallbusiness.com/insurance-products/workers-compensation/ "Workers' Compensation Insurance") (Evidence: Company-reported; scope: Product page "Top 10 workers' compensation claims" list; a general industry pattern, not specific to any one policyholder..) |
| 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..) | The workers' compensation product page does not publish premium ranges; statutory benefit levels are set by state law rather than the policy's published limits. [9](https://www.gallaghersmallbusiness.com/insurance-products/workers-compensation/ "Workers' Compensation Insurance") (Evidence: Not publicly disclosed; scope: Checked the workers' compensation product page 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..) | Confirm in your quote. |
| How to Apply | Confirm in your quote. | Gallagher offers an online quote form, a small business advisor phone line (1.833.292.9441, Monday through Friday, 8 a.m. to 5 p.m., continental U.S.), and a scheduled callback request to start a workers' compensation quote. [9](https://www.gallaghersmallbusiness.com/insurance-products/workers-compensation/ "Workers' Compensation Insurance") (Evidence: Company-reported; scope: Product page "Get Covered Now" section..) |

## Full Comparison

- [Aon vs Gallagher](https://spot.insure/compare/aon-vs-gallagher): 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 Gallagher Commercial Property Insurance](https://spot.insure/compare/aon-vs-gallagher/commercial-property)
- [Aon vs Gallagher Crime Insurance](https://spot.insure/compare/aon-vs-gallagher/crime)
- [Aon vs Gallagher Cyber Insurance](https://spot.insure/compare/aon-vs-gallagher/cyber)
- [Aon vs Gallagher D&O Insurance](https://spot.insure/compare/aon-vs-gallagher/directors-officers)
- [Aon vs Gallagher Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-gallagher/employment-practices)
- [Aon vs Gallagher Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-gallagher/fiduciary)
- [Aon vs Gallagher General Liability Insurance](https://spot.insure/compare/aon-vs-gallagher/general-liability)
- [Aon vs Gallagher Kidnap and Ransom Insurance](https://spot.insure/compare/aon-vs-gallagher/kidnap-ransom)
- [Aon vs Gallagher Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-gallagher/professional-errors-omissions)
- [AIG vs Aon Workers’ Compensation Insurance](https://spot.insure/compare/aig-vs-aon/workers-compensation)
- [AIG vs Gallagher Workers’ Compensation Insurance](https://spot.insure/compare/aig-vs-gallagher/workers-compensation)
- [Alliance Risk vs Aon Workers’ Compensation Insurance](https://spot.insure/compare/alliance-risk-vs-aon/workers-compensation)
- [Alliance Risk vs Gallagher Workers’ Compensation Insurance](https://spot.insure/compare/alliance-risk-vs-gallagher/workers-compensation)
- [Amelia Risk vs Aon Workers’ Compensation Insurance](https://spot.insure/compare/amelia-risk-vs-aon/workers-compensation)
- [Amelia Risk vs Gallagher Workers’ Compensation Insurance](https://spot.insure/compare/amelia-risk-vs-gallagher/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.

### Gallagher

4. [Technology Insurance](https://www.ajg.com/industries/technology-insurance/). Gallagher; Introduction; Solutions and coverages for the technology industry: Technology errors and omissions including cyber, Intellectual property insurance, Product liability, Employee benefits; Data-driven insights; global network. Accessed 2026-09-16.
5. [Insurance for Technology & IT Businesses](https://www.gallaghersmallbusiness.com/technology-services/). Gallagher Small Business; Protection for IT Professionals & Their Technology-Based Businesses; recommended coverage menu, including Surety Bond Programs; Connect With An Advisor. Accessed 2026-09-16.
6. [Executive and Financial Risk Insurance](https://www.ajg.com/insurance/executive-and-financial-risk-insurance/). Gallagher; Opening (insurance broking and placement); three key services; Directors and Officers; IPO and direct listings; Employment Practices; Fiduciary; Employee Dishonesty (Crime) and Fidelity Bond; Kidnap, Ransom and Extortion; M&A Transactional Insurance. Accessed 2026-09-16.
7. [Legal Information](https://www.gallaghersmallbusiness.com/legal-information/). Gallagher Small Business; Producer identification immediately above Quick Links. Accessed 2026-09-16.
8. [Woodruff Sawyer Is Now Gallagher](https://www.ajg.com/merger-partners/woodruff-sawyer-is-now-gallagher/). Gallagher; Opening; Executive and Financial Risk consulting; Continued access to client portals; contact form. Accessed 2026-09-16.
9. [Workers' Compensation Insurance](https://www.gallaghersmallbusiness.com/insurance-products/workers-compensation/). Gallagher Small Business; Workers' Comp Insurance Overview; Do you need a Workers' Compensation insurance policy; Benefits of Workers' Compensation Insurance; Workers' Comp market trends; Top 10 workers' compensation claims; Get Covered Now. 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).

## Gallagher Reviews

Review Score: 9.3 / 10 from 3 rated sources, equally weighted.

Gallagher has strong Trustpilot feedback and a favorable historical large-commercial survey result. Neither directly measures today’s US small-business service.

- J.D. Power: Broker satisfaction rank/score 2nd / 855 (Rank / 1,000-point score). 2017 US/Canada large-commercial broker study; participating organizations had at least $100m annual revenue or operating budget; not small-business-specific. Period: 2017 study. Checked 2026-09-25. [JD Power 2017 Large Commercial Insurance Study](https://www.jdpower.com/business/press-releases/jd-power-2017-large-commercial-insurance-study)
- Trustpilot: TrustScore 4.6 (5 stars); 8190 reviews. Global Arthur J. Gallagher & Co. brand profile; mixed countries and insurance lines, not US commercial-only. Period: 976 reviews in prior 12 months; observed 2026-09-25. Checked 2026-09-25. [Gallagher Reviews | Trustpilot](https://www.trustpilot.com/review/www.ajg.com)
- BBB: BBB grade A+ (BBB letter grade). BBB corporate headquarters profile for Gallagher, Rolling Meadows, Illinois. Checked 2026-09-25. [Gallagher | BBB Business Profile](https://www.bbb.org/us/il/rolling-meadows/profile/insurance-companies/gallagher-0654-23000270)

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

## Agent and Developer Resources

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