---
title: "Aon vs WTW"
description: "Compare Aon and WTW on their documented insurance roles and the questions to resolve in a proposal."
canonical: "https://spot.insure/compare/aon-vs-wtw"
page-type: "provider-comparison"
updated-at: "2026-09-30"
---

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-wtw)

# Aon vs WTW

Compare Aon and WTW on their documented insurance roles and the questions to resolve in a proposal.

## Before You Quote

Ask each provider about eligibility, the issuing insurer, policy wording, limits, retentions, exclusions and costs for your business.

## Highlights

Aon is documented as a broker or intermediary relationship; WTW's North American Corporate Risk & Broking terms describe a broker or intermediary relationship. Compare who advises on your placement, approaches insurers, and issues each policy. [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") [15](https://www.wtwco.com/-/media/WTW/notices/BTCD-CRB-NA-June-2025.pdf "Corporate Risk & Broking Brokerage Terms, Conditions & Disclosures (Canada & US)") [4](https://www.aon.com/en/capabilities/middle-market-clients "Middle Market Clients") [19](https://investors.wtwco.com/static-files/ea54f7ae-6b23-4006-98e1-5b2cd32b3f37 "WTW Investor Day transcript, December 3, 2024")

## Provider Reliability Assessments

These sourced assessments are shown for context; this comparison does not select a winner.

### Aon

Role: Broker.

Broker Spot Score: **6.7/10** (partial score; 70% of this role's weighting included). Assessed 2026-09-29; review due 2026-10-29. Excluded factors: Carrier-Network Strength (The supplied evidence did not support a score for Carrier-Network Strength; this factor is excluded, not scored as zero. Canonical evidence gaps: The FCA register could not be loaded, so Aon UK Limited's FCA number and permissions are company-reported.; No NAIC, NIPR or other state producer search was completed for Aon's U.S. entities beyond the two Texas orders; current status of those Texas licenses was not re-checked.; Aon does not publish a named list of insurers behind its placements, so the network view rests on its concentration statement.; The Central Bank of Ireland, Lloyd's and other state enforcement records were not searched exhaustively.; Placement-specific compensation is not published; only the general categories are.).

Read the [full reliability assessment](https://spot.insure/insurance-providers/aon/reliability).

### WTW

Role: Broker.

Broker Spot Score: **7.0/10** (partial score; 70% of this role's weighting included). Assessed 2026-09-29; review due 2026-10-29. Excluded factors: Carrier-Network Strength (The supplied evidence did not support a score for Carrier-Network Strength; this factor is excluded, not scored as zero. Canonical evidence gaps: The FCA register could not be loaded, so Willis Limited's FCA number and permissions are company-reported.; No NAIC or NIPR search was completed for WTW's U.S. entities beyond the Texas order; that license's current status was not re-checked.; The FSMA entry says "Willis Towers Watson" without SA/NV, so the link to the UK-branch parent is inferred from WTW's 10-K.; WTW publishes no named insurer roster, so network evidence is limited to scale and disclosures.; Third-party trackers list further U.S. state penalties, but no regulator source for them was opened, so they are not relied on.).

Read the [full reliability assessment](https://spot.insure/insurance-providers/wtw/reliability).

## 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).

## WTW Reviews

Review Score: 8.1 / 10 from 1 rated source, equally weighted.

WTW has little useful review evidence for a business buyer. Its one counted score is 807 out of 1,000 from a 2017 J.D. Power study of large commercial brokers, and Trustpilot's 2.1 from 9 reviews isn't counted.

- BBB: Complaints 4. BBB's Willis Towers Watson Chicago business profile; four complaints displayed for the preceding three years as of 2026-09-29. All four are marked unpursuable; displayed matters concern pension or employee-benefit administration, not commercial insurance brokerage placements. Period: Last three years; 0 closed in the last 12 months; BBB page reviewed 2026-09-29. Checked 2026-09-29. [Willis Towers Watson: Complaints](https://www.bbb.org/us/il/chicago/profile/insurance-companies/willis-towers-watson-0654-8000152/complaints)
- J.D. Power: 2017 Overall Broker Customer Satisfaction Index 807 (out of 1000). US/Canada large-commercial broker customer-satisfaction studies, 2016 and 2017 editions. They do not describe present service or WTW small-business clients. The 2017 release reports 2,506 evaluations across the study, not a WTW-specific sample. Period: 2017 study; 2 Power Circles; 2,506 study-wide evaluations, WTW-specific count not stated. Checked 2026-09-29. [2016 Large Commercial Insurance Study](https://www.jdpower.com/system/files/legacy/assets/2016244_large_comm_insurance_.pdf); [2017 Large Commercial Insurance Study](https://www.jdpower.com/system/files/legacy/assets/2017222_large_commercial_insurance.pdf); [2016 Large Commercial Insurance Study](https://www.jdpower.com/business/press-releases/2016-large-commercial-insurance-study); [Diversity of Offerings Becomes Key Differentiator for Large Commercial Insurers, J.D. Power Finds](https://www.jdpower.com/business/press-releases/jd-power-2017-large-commercial-insurance-study)
- Trustpilot: TrustScore 2.1 (out of 5); 9 reviews. Global wtwco.com company page; nine reviews and a 2.1/5 TrustScore on 2026-09-29. Visible reviews predominantly concern pensions, employee benefits, investments or international consumer interactions; not a US commercial-insurance buyer sample. Period: Displayed 2026-09-29. Checked 2026-09-29. [wtwco.com Reviews](https://www.trustpilot.com/review/www.wtwco.com)

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





## Coverage Comparison

| Coverage Type | Aon | WTW |
| --- | --- | --- |
| [Builders risk](https://spot.insure/coverage/builders-risk) | Listed: Aon names Construction Property/Builders Risk on its global construction page; confirm whether this line is offered for the buyer, state, and placement. [14](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") | Not listed |
| [Cargo and transit](https://spot.insure/coverage/cargo-transit) | Listed: Aon lists cargo placements in its global marine practice; U.S. eligibility, insurer, limits and policy terms are not stated on the reviewed page. [9](https://www.aon.com/en/capabilities/risk-transfer/marine-insurance-and-risk-management "Marine Insurance and Risk Management") | Listed: WTW identifies Global Cargo within its global marine practice and includes cargo risk in its named data-center policy. These descriptions do not establish a particular US placement, insurer, policy wording, or availability. [23](https://www.wtwco.com/en-us/solutions/marine "Marine") [24](https://www.wtwco.com/en-us/solutions/products/digital-infrastructure-protector "Digital Infrastructure Protector") |
| [Commercial auto](https://spot.insure/coverage/commercial-auto) | Listed: Aon lists automobile liability within its global Professional Services Practice for law, accounting and consulting firms; U.S. availability and specific policy terms are not established. [6](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice | Insurance Broking & Risk Management") | Not listed |
| [Commercial property](https://spot.insure/coverage/commercial-property) | Listed: Aon describes commercial-property brokerage and risk management, with a U.S.-available analytics tool; tool availability does not establish state-specific insurance availability. [8](https://www.aon.com/en/capabilities/risk-management/property-risk-management "Property Risk Management") | Listed: WTW markets property insurance for residential real-estate stakeholders and a separate integrated data-center construction and operations program. Program terms and eligible risks require placement-specific confirmation. [24](https://www.wtwco.com/en-us/solutions/products/digital-infrastructure-protector "Digital Infrastructure Protector") [25](https://www.wtwco.com/en-us/industries/residential "Residential | WTW") |
| [Crime](https://spot.insure/coverage/crime) | Listed: Aon lists crime within its global Professional Services Practice for law, accounting and consulting firms; U.S. availability and specific policy terms are not established. [6](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice | Insurance Broking & Risk Management") | Listed: WTW’s 2024 annual report describes crime insurance solutions as a group capability. The filing is historical and global; current U.S. placement terms and eligibility remain unknown. [26](https://www.sec.gov/Archives/edgar/data/1140536/000095017025026278/wtw-20241231.htm "WTW 2024 Form 10-K") |
| [Cyber liability](https://spot.insure/coverage/cyber) | Listed: Aon describes cyber insurance and related brokerage, analytics and claims support; confirm the producing entity, insurer, jurisdiction and policy terms for a U.S. placement. [7](https://www.aon.com/en/capabilities/cyber-resilience "Cyber Risk") [6](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice | Insurance Broking & Risk Management") | Listed: WTW describes cyber protection within its Digital Infrastructure Protector data-center solution, and its 2024 annual report describes cyber insurance solutions as a global group capability. Neither source establishes current standalone U.S. terms or eligibility. [24](https://www.wtwco.com/en-us/solutions/products/digital-infrastructure-protector "Digital Infrastructure Protector") [26](https://www.sec.gov/Archives/edgar/data/1140536/000095017025026278/wtw-20241231.htm "WTW 2024 Form 10-K") |
| [Directors and officers](https://spot.insure/coverage/directors-officers) | Listed: Aon describes D&O brokerage and program services in a global practice; this does not identify the producer, insurer or state availability for a particular U.S. placement. [5](https://www.aon.com/en/capabilities/risk-transfer/directors-and-officers-liability-insurance "Directors’ and Officers’ (D&O) Liability Insurance") | Not listed |
| [Employment practices liability](https://spot.insure/coverage/employment-practices) | Listed: Aon lists EPL for professional-services firms in a global practice; this does not establish eligibility for every U.S. employer or state. [6](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice | Insurance Broking & Risk Management") | Listed: WTW’s 2024 annual report describes employment-practices insurance solutions as a group capability. The filing is historical and global; current U.S. placement terms and eligibility remain unknown. [26](https://www.sec.gov/Archives/edgar/data/1140536/000095017025026278/wtw-20241231.htm "WTW 2024 Form 10-K") |
| [Fiduciary liability](https://spot.insure/coverage/fiduciary) | Listed: Aon lists fiduciary liability within its global Professional Services Practice for law, accounting and consulting firms; U.S. availability and specific policy terms are not established. [6](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice | Insurance Broking & Risk Management") | Not listed |
| [General liability](https://spot.insure/coverage/general-liability) | Listed: Aon lists general liability within construction liability coverage areas in its global construction practice; this does not establish a standalone or U.S.-available line. [14](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") | Not listed |
| [Kidnap and ransom](https://spot.insure/coverage/kidnap-ransom) | Listed: Aon lists kidnap and ransom within its global Professional Services Practice for law, accounting and consulting firms; U.S. availability and specific policy terms are not established. [6](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice | Insurance Broking & Risk Management") | Not listed |
| [Management liability](https://spot.insure/coverage/management-liability) | Listed: Aon describes management liability in its global Professional Services Practice as a partnership program for law, accounting and consulting firms, rather than a standalone line; U.S. availability and specific policy terms are not established. [6](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice | Insurance Broking & Risk Management") | Listed: WTW’s 2024 annual report describes management-liability solutions as a group capability. The filing is historical and global; current U.S. placement terms and eligibility remain unknown. [26](https://www.sec.gov/Archives/edgar/data/1140536/000095017025026278/wtw-20241231.htm "WTW 2024 Form 10-K") |
| [Professional errors and omissions (E&O)](https://spot.insure/coverage/professional-errors-omissions) | Listed: Aon describes professional-liability/E&O services for law, accounting and consulting firms; a U.S. placement and any separate technology E&O terms remain to be confirmed. [6](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice | Insurance Broking & Risk Management") | Listed: WTW markets financial-lines solutions, including errors and omissions, for residential real-estate stakeholders. Individual terms, insurer and placement eligibility are not established. [25](https://www.wtwco.com/en-us/industries/residential "Residential | WTW") |
| [Surety bonds](https://spot.insure/coverage/surety-bonds) | Listed: Aon markets Commercial Surety globally and says availability depends on jurisdiction; the page does not establish U.S. placement availability. [10](https://www.aon.com/en/capabilities/risk-transfer/commercial-surety "Commercial Surety") | Listed: WTW’s 2024 annual report describes a global bond-placement team. This is a dated global group capability, not evidence of current U.S. placement terms or eligibility. [26](https://www.sec.gov/Archives/edgar/data/1140536/000095017025026278/wtw-20241231.htm "WTW 2024 Form 10-K") |
| [Umbrella and excess liability](https://spot.insure/coverage/umbrella-excess) | Listed: Aon lists umbrella and excess within construction liability coverage areas; ask whether either applies to your project and jurisdiction. [14](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") | Not listed |
| [Workers’ compensation](https://spot.insure/coverage/workers-compensation) | Listed: Aon lists workers compensation among global construction coverage areas; this does not establish state availability or a placement. [14](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") | Not listed |

A listing may be arranged through an insurer or partner. “Not listed” means this catalogue has no separate offering recorded; ask the provider whether it can quote the coverage and request the policy terms.



## Optional Spot Service Handoff

Spot can help prepare applications, coordinate brokers, and compare proposals. If that work is needed, collect the company's task, known deadline, current broker, and open questions for a [free consultation](https://spot.insure/pricing.md). The company decides what to buy; Spot does not automatically bind coverage.

## How Aon and WTW Differ

Aon is documented as a broker or intermediary relationship, while WTW's North American Corporate Risk & Broking terms describe a broker or intermediary relationship. This pair is useful for comparing who will advise on your placement, who will approach insurers, and which legal company will issue each policy.

### Business Roles and Access

Aon's published description: Aon’s U.S. Commercial Risk terms describe Commercial Risk Solutions U.S. as broker of record for certain insurance programs. Separate electronic-delivery terms name Aon Risk Services Companies, Inc. acting for itself and licensed brokerage subsidiaries to deliver arranged policies; the terms define an insurer as the policy issuer and risk bearer. These group-level descriptions do not identify the producer or authority for a particular placement. [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/about/leadership-and-governance/aon-commercial-risk-us-electronic-disclosure-and-consent-terms "Aon Commercial Risk U.S. Electronic Disclosure and Consent Terms")

WTW's published description: For Corporate Risk & Broking engagements governed by its North American terms, WTW says it normally acts as the client’s insurance intermediary. [15](https://www.wtwco.com/-/media/WTW/notices/BTCD-CRB-NA-June-2025.pdf "Corporate Risk & Broking Brokerage Terms, Conditions & Disclosures (Canada & US)")

Use each proposal to identify the licensed producer, any program intermediary, and the legal insurer for each policy. Brand names and group disclosures do not identify those roles for a specific placement.

### Customer and Industry Fit

Aon's published description: Aon markets a dedicated Middle Market practice for mid-sized organizations and says it serves growing businesses across North America. [4](https://www.aon.com/en/capabilities/middle-market-clients "Middle Market Clients")

WTW's published description: At WTW’s December 2024 Investor Day, management described Risk & Broking as roughly half large business and half middle market and below; the answer did not give a US-specific share. [19](https://investors.wtwco.com/static-files/ea54f7ae-6b23-4006-98e1-5b2cd32b3f37 "WTW Investor Day transcript, December 3, 2024")

The companies describe different customer or industry scopes. Treat those descriptions as starting points for a conversation, then ask each to confirm appetite for your actual operations, revenue, locations, and contracts.

### Application and Binding

Aon's published description: For certain U.S. Commercial Risk programs, Aon says it consults with the client about market conditions, insurers to approach and program strategy, helps prepare underwriting information and applications, and obtains the client’s instructions to bind specific programs based on Aon’s proposal. The client signs applications that require a signature. [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")

WTW's published description: Under WTW’s North American Corporate Risk & Broking terms, an insurer quote is an offer, not confirmation of coverage, and may change or be withdrawn before the client orders binding. [15](https://www.wtwco.com/-/media/WTW/notices/BTCD-CRB-NA-June-2025.pdf "Corporate Risk & Broking Brokerage Terms, Conditions & Disclosures (Canada & US)")

The documented entry route affects what you prepare and when you receive a usable proposal. An application, online indication, or insurer quote is not itself confirmation that coverage is bound.

### Service and Renewals

Aon's published description: Aon says it consults with clients before placing or renewing coverage and, where applicable, administers the insurer relationship for selected programs, including billing, data reporting and negotiated requirements. [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")

WTW's published description: WTW’s North American terms say it reviews binders, policies and endorsements against negotiated specifications and client instructions and advises on errors or recommended changes. [15](https://www.wtwco.com/-/media/WTW/notices/BTCD-CRB-NA-June-2025.pdf "Corporate Risk & Broking Brokerage Terms, Conditions & Disclosures (Canada & US)")

Service descriptions identify possible support routes, not a guaranteed response time or claims result. Ask who will handle certificates, endorsements, renewals, and claim communications for the policy you are considering.

## Questions to Resolve Before Comparing Quotes

Ask each provider to identify the producer of record, the legal insurer for every proposed policy, and the state-specific availability of each requested line. Request the insurer's forms and endorsements, then compare limits, retentions, exclusions, conditions, and any required companion policies.

Ask what information remains outstanding before binding, who will confirm the effective date in writing, and which team handles changes, certificates, renewals, and claim communications. Request premium, taxes, fees, and producer compensation separately where applicable. Neither public product descriptions nor a quote alone establishes identical protection, final eligibility, or a bound policy.

## Compare Services

What each provider documents about the services you may need.

| Criteria | Aon | WTW |
| --- | --- | --- |
| Business role | Aon’s U.S. Commercial Risk terms describe Commercial Risk Solutions U.S. as broker of record for certain insurance programs. Separate electronic-delivery terms name Aon Risk Services Companies, Inc. acting for itself and licensed brokerage subsidiaries to deliver arranged policies; the terms define an insurer as the policy issuer and risk bearer. These group-level descriptions do not identify the producer or authority for a particular placement. [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/about/leadership-and-governance/aon-commercial-risk-us-electronic-disclosure-and-consent-terms "Aon Commercial Risk U.S. Electronic Disclosure and Consent Terms") (Evidence: Company-reported; scope: Company-reported U.S. Commercial Risk brokerage and electronic-delivery terms; certain programs only. No specific insured, licensed producer, appointment, policy issuer, state authority or placement was matched.; verified: 2026-09-29.) | For Corporate Risk & Broking engagements governed by its North American terms, WTW says it normally acts as the client’s insurance intermediary. The terms separately disclose that WTW or affiliates may provide insurer-side services, including in some MGA or program-manager arrangements. [15](https://www.wtwco.com/-/media/WTW/notices/BTCD-CRB-NA-June-2025.pdf "Corporate Risk & Broking Brokerage Terms, Conditions & Disclosures (Canada & US)") [16](https://www.wtwco.com/-/media/WTW/Notices/BTCD-CRB-NA-January-2024 "Corporate Risk & Broking Brokerage Terms, Conditions & Disclosures (Canada & US)") (Evidence: Company-reported; scope: Corporate Risk & Broking engagements governed by WTW’s North American terms. This describes the ordinary role under those terms and the disclosed possibility of separate insurer-side services; it does not establish an insurer-side role in a particular engagement or make every WTW business exclusively buyer-side.; verified: 2026-09-28.)<br><br>WTW’s US product disclosures name Willis Towers Watson Northeast, Inc. as one of the licensed entities through which the group offers insurance products. WTW plc’s 2025 subsidiary exhibit lists that company among its subsidiaries as of December 31, 2025, but does not identify its direct or intermediate owner. [17](https://www.wtwco.com/en-us/solutions/services/trade-credit-insurance "Trade Credit Insurance") [21](https://www.sec.gov/Archives/edgar/data/1140536/000119312526069307/wtw-ex21_1.htm "Exhibit 21.1 to Willis Towers Watson Public Limited Company 2025 Form 10-K: Subsidiaries") (Evidence: Company-reported; scope: WTW group-level US product-distribution disclosure and WTW plc Exhibit 21.1 dated 2025-12-31. “Licensed entity” is the company’s description; neither source verifies current authority by state or line, identifies the producer for a particular placement, or establishes the direct/intermediate ownership chain.; verified: 2026-09-28.) |
| Customer focus | Aon markets a dedicated Middle Market practice for mid-sized organizations and says it serves growing businesses across North America. The reviewed page gives no numerical size cutoff and does not establish U.S.-only eligibility; Aon’s broader global client statement describes the parent’s client base, not this practice’s eligibility rules. [4](https://www.aon.com/en/capabilities/middle-market-clients "Middle Market Clients") [3](https://www.sec.gov/Archives/edgar/data/315293/000162828026008116/aon-20251231.htm "Aon plc Form 10-K for the year ended December 31, 2025") (Evidence: Company-reported; scope: Company-reported marketing page, North America; no numerical revenue, employee-count, state or U.S.-only eligibility definition is stated.; verified: 2026-09-29.) | At WTW’s December 2024 Investor Day, management described Risk & Broking as roughly half large business and half middle market and below; the answer did not give a US-specific share. [19](https://investors.wtwco.com/static-files/ea54f7ae-6b23-4006-98e1-5b2cd32b3f37 "WTW Investor Day transcript, December 3, 2024") (Evidence: Company-reported; scope: Management commentary in the December 3, 2024 Investor Day Risk & Broking Q&A. The answer says “our business”; it does not expressly characterize the split as worldwide, provide a US-specific share or customer count, or guarantee account-tier eligibility.; verified: 2026-09-28.)<br><br>WTW’s US manufacturing practice says it combines manufacturing expertise and data analytics in insurance-program design, and that its broking specialists have access to the global insurance market to identify insurer partners suited to a client’s risk. [18](https://www.wtwco.com/en-us/industries/manufacturing "Manufacturing") (Evidence: Company-reported; scope: WTW’s US manufacturing industry page, “How we serve our clients.” This is a company-described practice approach, not independent evidence of actual placement breadth, a guaranteed insurer fit, or a placement outcome.; verified: 2026-09-28.) |
| Application process | For certain U.S. Commercial Risk programs, Aon says it consults with the client about market conditions, insurers to approach and program strategy, helps prepare underwriting information and applications, and obtains the client’s instructions to bind specific programs based on Aon’s proposal. The client signs applications that require a signature. [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") (Evidence: Company-reported; scope: Company-reported contractual terms for certain U.S. Commercial Risk programs; not a universal workflow, online checkout claim, insurer role or guarantee that a quote can bind.; verified: 2026-09-29.) | Under WTW’s North American Corporate Risk & Broking terms, an insurer quote is an offer, not confirmation of coverage, and may change or be withdrawn before the client orders binding. If the client chooses to bind, WTW says it will secure a formal insurer commitment, typically a binder. [15](https://www.wtwco.com/-/media/WTW/notices/BTCD-CRB-NA-June-2025.pdf "Corporate Risk & Broking Brokerage Terms, Conditions & Disclosures (Canada & US)") [16](https://www.wtwco.com/-/media/WTW/Notices/BTCD-CRB-NA-January-2024 "Corporate Risk & Broking Brokerage Terms, Conditions & Disclosures (Canada & US)") (Evidence: Company-reported; scope: Commercial placements governed by WTW’s North American Corporate Risk & Broking terms, June 1, 2025, p. 4. An insurer commitment/binder follows the client’s order to bind; this does not establish a self-service online journey or promise that a quote will remain available.; verified: 2026-09-28.) |
| Servicing and renewals | Aon says it consults with clients before placing or renewing coverage and, where applicable, administers the insurer relationship for selected programs, including billing, data reporting and negotiated requirements. The terms do not promise automatic renewal, a timetable, a specific market or a particular outcome. [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") (Evidence: Company-reported; scope: Company-reported terms for selected U.S. Commercial Risk programs; administration varies where applicable and may be changed by written agreement.; verified: 2026-09-29.) | WTW’s North American terms say it reviews binders, policies and endorsements against negotiated specifications and client instructions and advises on errors or recommended changes. The terms also expect the client to review those documents. [15](https://www.wtwco.com/-/media/WTW/notices/BTCD-CRB-NA-June-2025.pdf "Corporate Risk & Broking Brokerage Terms, Conditions & Disclosures (Canada & US)") [16](https://www.wtwco.com/-/media/WTW/Notices/BTCD-CRB-NA-January-2024 "Corporate Risk & Broking Brokerage Terms, Conditions & Disclosures (Canada & US)") (Evidence: Company-reported; scope: Clients governed by WTW’s North American Corporate Risk & Broking terms, June 1, 2025, p. 5. This describes a stated document-review process and the client’s separate essential review duty; it is not a guarantee all errors will be detected or corrected.; verified: 2026-09-28.) |

## Related Reading

- [What Is Aon?](https://spot.insure/insurance-providers/aon)
- [What Is WTW?](https://spot.insure/insurance-providers/wtw)

## Related Comparisons

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- [Berkshire Hathaway Specialty Insurance vs WTW](https://spot.insure/compare/berkshire-hathaway-specialty-insurance-vs-wtw)
- [biBerk vs WTW](https://spot.insure/compare/biberk-vs-wtw)
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- [Corgi vs WTW](https://spot.insure/compare/corgi-vs-wtw)
- [Coterie Insurance vs WTW](https://spot.insure/compare/coterie-vs-wtw)
- [Counterpart vs WTW](https://spot.insure/compare/counterpart-vs-wtw)
- [Coverdash vs WTW](https://spot.insure/compare/coverdash-vs-wtw)
- [Cowbell vs WTW](https://spot.insure/compare/cowbell-vs-wtw)
- [Embroker vs WTW](https://spot.insure/compare/embroker-vs-wtw)

## Sources

### [Aon Official Website](https://www.aon.com/)

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. [Aon Commercial Risk U.S. Electronic Disclosure and Consent Terms](https://www.aon.com/en/about/leadership-and-governance/aon-commercial-risk-us-electronic-disclosure-and-consent-terms). Aon; Lines 120–125: Aon Risk Services Companies, Inc. acting for itself and licensed brokerage subsidiaries in electronic delivery; insurer is defined as issuer and risk bearer. The passage does not identify a producing entity or insurer for a particular placement. Accessed 2026-09-28.
3. [Aon plc Form 10-K for the year ended December 31, 2025](https://www.sec.gov/Archives/edgar/data/315293/000162828026008116/aon-20251231.htm). Aon plc / U.S. Securities and Exchange Commission; Cover lines 23–34: Aon plc is incorporated in Ireland and gives Dublin as principal executive office; lines 261–263: global client breadth; lines 271–273 and segment discussion: company-reported Commercial Risk brokerage and risk-consulting operations. Filing is parent-level evidence, not placement producer, authority or insurer evidence. Accessed 2026-09-29.
4. [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.
5. [Directors’ and Officers’ (D&O) Liability Insurance](https://www.aon.com/en/capabilities/risk-transfer/directors-and-officers-liability-insurance). Aon; Lines 135–160: general covered allegations and Side A, B and C scenarios, including public/private differences; lines 171–185: insurer-selection analytics, brokerage/claims-team collaboration and management-liability specialization. Product explanation and company-reported services; not an Aon-issued policy or quote. Accessed 2026-09-29.
6. [Professional Services Practice | Insurance Broking & Risk Management](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice). Aon; Lines 125–128: global professional-services team and named law, accounting and consulting firm audience; lines 131–147: professional-liability/E&O offering and terminology; lines 151–176: cyber and EPL offerings, including management liability described at lines 158–163 as a partnership program/category; lines 180–189: professional-services P&C listing, including crime, fiduciary, kidnap and ransom, and automobile liability. “Loss Prevention” section (directly inspected passage at lines 209–212) conditions law-firm loss prevention on Aon broking of lawyers’ professional liability. Global practice page; no state-specific placement schedule. Accessed 2026-09-29.
7. [Cyber Risk](https://www.aon.com/en/capabilities/cyber-resilience). Aon; Lines 194–205: cyber risk financing and cyber insurance; lines 206–230: claims advocacy/preparation and third-party incident-response providers, separate client contracts, no performance guarantee, and possible referral remuneration. Company-reported global service description. Accessed 2026-09-29.
8. [Property Risk Management](https://www.aon.com/en/capabilities/risk-management/property-risk-management). Aon; Lines 132–140: property/buildings/contents and possible business-interruption cover, broker team services; lines 148–159: rates, retentions, limits, deductibles, benchmarking and U.S.-available Property Risk Analyzer; lines 161–168: global market access and alternate risk transfer. Tool availability does not establish placement availability or authority by state. Accessed 2026-09-29.
9. [Marine Insurance and Risk Management](https://www.aon.com/en/capabilities/risk-transfer/marine-insurance-and-risk-management). Aon; Lines 123–126: global marine practice, customer examples and marine claims/risk services; lines 155–175: cargo offerings including project cargo, general cargo, stock throughput, excess storage and freight/logistics. No U.S. placement terms, insurer, limits or state authority specified. Accessed 2026-09-29.
10. [Commercial Surety](https://www.aon.com/en/capabilities/risk-transfer/commercial-surety). Aon; Lines 125–127: commercial surety bond description and three parties; lines 190–210: Aon says it approaches the surety market globally and describes its brokerage support, with offerings depending on jurisdiction; lines 211–222: examples of bond types. Global company marketing; no U.S. producing entity, state authority, issuer or placement terms. Accessed 2026-09-29.
11. [About | Aon](https://www.aon.com/en/about). Aon; Aon’s company overview and Our Capabilities list distinguish Risk Capital from Human Capital and describe group-wide capabilities. General company identity context; not placement, authority or insurer evidence. Accessed 2026-09-28.
12. [Broking and Risk Transfer | Aon](https://www.aon.com/en/capabilities/risk-transfer). Aon; Explore Our Risk Transfer Offerings; Property & Casualty, Specialty, Management Liability and industry listings. Broad catalogue only; not sufficient for a dedicated line record by itself. Accessed 2026-09-28.
13. [Financial and Executive Risks | Insurance Broking & Risk Management](https://www.aon.com/en/capabilities/risk-transfer/financial-and-executive-risks). Aon; Financial Services Group Overview; D&O, fiduciary, EPL and crime references plus policy design and insurer market knowledge. Broad category/source context; not sufficient by itself to establish a separate U.S. product. Accessed 2026-09-28.
14. [Construction and Infrastructure Insurance and Risk Management](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management). Aon; Lines 125–126: global construction practice designing and placing risk solutions; lines 137–156: industry-specific property, casualty, construction professional liability, subcontractor default and construction surety offerings; lines 167–195: global coverage areas explicitly list Builders Risk, general/umbrella/excess liability within construction liability, workers compensation and surety among other categories. These are construction-practice marketing statements; page does not provide U.S. state or placement availability for each line. Accessed 2026-09-29.

### [WTW Official Website](https://www.wtwco.com/en-us)

15. [Corporate Risk & Broking Brokerage Terms, Conditions & Disclosures (Canada & US)](https://www.wtwco.com/-/media/WTW/notices/BTCD-CRB-NA-June-2025.pdf). WTW; Document dated 2025-06-01; pp. 4–6: quote/binding, document review, claims reporting, intermediary and affiliate disclosures. Accessed 2026-09-28.
16. [Corporate Risk & Broking Brokerage Terms, Conditions & Disclosures (Canada & US)](https://www.wtwco.com/-/media/WTW/Notices/BTCD-CRB-NA-January-2024). WTW; Document dated 2024-01-01; pp. 4–5 and 7: quote/binding, document review, claims reporting and Brokerage Disclosures. Accessed 2026-09-28.
17. [Trade Credit Insurance](https://www.wtwco.com/en-us/solutions/services/trade-credit-insurance). WTW; North America licensed-entity disclaimer naming Willis Towers Watson Northeast, Inc. as one US entity. Accessed 2026-09-28.
18. [Manufacturing](https://www.wtwco.com/en-us/industries/manufacturing). WTW; “How WTW can help manufacturers”; “How we serve our clients”; North America licensed-entity disclaimer. Accessed 2026-09-28.
19. [WTW Investor Day transcript, December 3, 2024](https://investors.wtwco.com/static-files/ea54f7ae-6b23-4006-98e1-5b2cd32b3f37). WTW Investor Relations / Refinitiv StreetEvents; PDF p. 27 / HTML lines 995–999, Risk & Broking Q&A. Accessed 2026-09-28.
20. [Willis Towers Watson Public Limited Company Form 10-K for year ended December 31, 2025](https://www.sec.gov/Archives/edgar/data/1140536/000119312526069307/wtw-20251231.htm). U.S. Securities and Exchange Commission; Cover; Certain Definitions; Item 1 business and corporate structure; statement on underwriting. Accessed 2026-09-28.
21. [Exhibit 21.1 to Willis Towers Watson Public Limited Company 2025 Form 10-K: Subsidiaries](https://www.sec.gov/Archives/edgar/data/1140536/000119312526069307/wtw-ex21_1.htm). U.S. Securities and Exchange Commission; Exhibit header lines 2–6; US subsidiary table lines 319–320. Accessed 2026-09-28.
22. [Business Insurance: Small Business Insurance](https://www.wtwco.com/-/media/wtw/solutions/services/small-business-insurance.pdf). WTW; One-page brochure, pp. 1: listed protections, licensed-broker/carrier statement, Canadian SME service contact and target-industry description. Accessed 2026-09-29.
23. [Marine](https://www.wtwco.com/en-us/solutions/marine). WTW; “Our solutions” cargo brokerage; marine specialist count; claims advice and average-adjuster service; North America licensed-entity disclaimer. Accessed 2026-09-28.
24. [Digital Infrastructure Protector](https://www.wtwco.com/en-us/solutions/products/digital-infrastructure-protector). WTW; Integrated policy coverage for building, operational property, marine and cargo under one policy; integrated data-center construction/operations; cyber and liability protection in broader solution; separate-policy preference caveat; capacity and North America licensed-entity disclaimer. Accessed 2026-09-29.
25. [Residential | WTW](https://www.wtwco.com/en-us/industries/residential). WTW; “Specialized insurance products”: lists property insurance and financial lines, including errors and omissions; inspected official indexed text 2026-09-29. Direct reader access failed; indexed page crawl was about five months old. Accessed 2026-09-29.
26. [WTW 2024 Form 10-K](https://www.sec.gov/Archives/edgar/data/1140536/000095017025026278/wtw-20241231.htm). U.S. Securities and Exchange Commission / Willis Towers Watson Public Limited Company; Part I, Item 1, FINEX and Surety business descriptions: the 2024 annual report identifies management and professional liability, employment practices, crime, cyber and M&A insurance solutions, and a global bond-placement team; indexed passages rechecked 2026-09-29. Accessed 2026-09-29.

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

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