Aon vs 
Chubb: How Do They Compare for Umbrella and Excess Liability Insurance?
Aon: umbrella and Excess Liability as separate coverage areas within construction liability. The page does not specify an attachment point, underlying policy, limits or terms for a particular placement. Chubb: for large global and national companies, Chubb specializes in lead umbrella and excess liability; for mid-sized companies it offers what it calls competitive excess casualty alternatives with claims handling and timely service. 3,7
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. 1,2
What Is Chubb?
Chubb fits technology firms seeking DigiTech ERM or small businesses with up to $30 million in revenue seeking a BOP; buyers wanting an instant direct purchase should compare online carriers. Agents can quote eligible small accounts, with a faster cyber route. 4,5,6
What Is Umbrella and Excess Liability Insurance?
Umbrella or excess insurance adds liability limits above the policies named in the quote after a covered claim exhausts their limits. It may fit if a contract sets higher limits; check which primary policies are listed and any gaps between them. 9,10,11,12,13
Key Differences in Umbrella and Excess Liability Insurance
Underwriter and market segment
Chubb underwrites umbrella and excess directly and separates solutions for global, mid-sized, energy and construction accounts. Aon describes a brokered placement. A buyer can compare Chubb’s named underwriting segments with the market access its broker offers. 3 7
Broker issue platform
Chubb offers appointed brokers Express Umbrella to reserve, quote, bind and issue business. 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. Ask whether the platform or adviser-led process gives your account the servicing and renewal support it needs. 3 7
Underlying policy terms
Chubb describes tailored excess solutions by account segment, while Aon lists umbrella and Excess Liability as separate coverage areas within construction liability. The page does not specify an attachment point, underlying policy, limits or terms for a particular placement. Neither overview gives your actual attachment point. Ask both to identify covered underlying policies, limits and exclusions in the quote. 3 7
What to Confirm in Umbrella and Excess Liability Insurance Quotes
- Ask Aon to confirm the quoted coverage trigger, underlying policies and exclusions; its offering says umbrella and Excess Liability as separate coverage areas within construction liability. The page does not specify an attachment point, underlying policy, limits or terms for a particular placement. 3
- Ask Chubb to confirm the quoted coverage trigger, underlying policies and exclusions; its offering says for large global and national companies, Chubb specializes in lead umbrella and excess liability; for mid-sized companies it offers what it calls competitive excess casualty alternatives with claims handling and timely service. 7
Aon and Chubb Review Scores for 2026
These averages can combine ratings for different products, locations, and customer groups, including approximate BBB grade conversions. Read each review for the sources, scope, and calculation.
Aon Review Score
Review Score
3 rated sources
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.[4][6][7]
Read Aon reviewsChubb Review Score
Review Score
5 rated sources
Chubb earns 5/5 from NerdWallet, which reports fewer-than-expected commercial property and liability complaints. Customer ratings are mixed across products and locations.[1][4][7][8][9]
Read Chubb reviewsAon vs Chubb Umbrella and Excess Liability Insurance Compared
Aon vs Chubb: Umbrella and Excess Liability Insurance: documented features by provider
| Criteria | Aon Umbrella and Excess Liability brokerage and risk-advisory offering | Chubb Umbrella & Excess Casualty 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 umbrella and excess liability, this is evidence of Aon’s brokered market offering; the page does not identify the insurer for a buyer’s placement. 3Company-reported. Aon’s global construction and infrastructure practice page. This establishes a marketed brokerage/advisory offering, not policy issuance or account-specific placement. | Chubb underwrites umbrella and excess liability insurance directly, spanning smaller and mid-sized companies through global multinationals, and offers it as an add-on within its small-business Total Account Solution. 7,8Company-reported. Umbrella & Excess Casualty product page and workers'-compensation Total Account Solution section. |
| 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. 3Not found in reviewed sources. Aon’s global practice page as reviewed 2026-09-30; no state-specific placement schedule or buyer quote was reviewed. This does not establish that Aon cannot arrange a placement. | Confirm in your quote. |
| Who It’s For | Aon 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. 3Company-reported. Audience described for Aon’s global construction and infrastructure practice. It does not establish U.S. state availability or underwriting eligibility for a placement. | Chubb structures umbrella and excess casualty into separate options for large global and national companies, mid-sized companies, the energy industry, and the construction industry, saying it tailors solutions to each segment's exposures. 7Company-reported. Umbrella & Excess Casualty Insurance Options section. |
| Coverage Features | Aon lists Umbrella and Excess Liability as separate coverage areas within construction liability. The page does not specify an attachment point, underlying policy, limits or terms for a particular placement. 3Company-reported. 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. | For large global and national companies, Chubb specializes in lead umbrella and excess liability; for mid-sized companies it offers what it calls competitive excess casualty alternatives with claims handling and timely service. 7Company-reported. Umbrella & Excess Casualty product page option descriptions. |
| 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. 3Not publicly disclosed. Aon’s global practice page as reviewed 2026-09-30; no quote, bond form or issued policy was reviewed. | The reviewed umbrella and excess casualty page does not publish specific attachment points, limit amounts or pricing; these vary by account and program. 7Not found in reviewed sources. Umbrella & Excess Casualty product page as read on 2026-09-23. When bundled through Chubb's small-business Total Account Solution, umbrella insurance is described only as providing "an additional layer of coverage over existing liability policies," without a published limit amount. 8Company-reported. Workers'-compensation Total Account Solution section. |
| 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. 3Company-reported. 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. | Chubb offers Express Umbrella, a web-based platform for appointed brokers to reserve, quote, bind and issue umbrella business, which Chubb says can help brokers build specialized books of business. 7Company-reported. Express Umbrella Online Platform section; available to appointed brokers, not directly to buyers. You can request a quote online, or an appointed independent agent or broker can place the policy through a Chubb Appointment. 7Company-reported. Umbrella & Excess Casualty product page quote call-to-action. |
Related Pages for Aon vs Chubb Umbrella and Excess Liability Insurance
Umbrella and Excess Liability Insurance Pages for Aon and Chubb
Other Coverage Lines Compared for Aon vs Chubb
Other Umbrella and Excess Liability Insurance Provider Comparisons
Sources for Aon vs Chubb Umbrella and Excess Liability Insurance
Sources About Aon
- Commercial Risk Solutions U.S. Brokerage Terms of Service. 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.
- 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.
- 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.
Sources About Chubb
- Insurance For Technology Companies. Chubb; Industry overview; Who we serve; Products and services: commercial package insurance (BOP, Benchmarq, Customarq), E&O/Cyber, Financial Lines, workers’ compensation, auto and umbrella; dedicated underwriting, claims and risk engineering. Accessed 2026-09-16.
- Terms Of Use. Chubb; Acceptance of Terms identifying Chubb Group Holdings Inc.; surplus-lines producer restriction; products not available to all users or jurisdictions; Chubb Limited safe-harbor language; Internet Portals for Chubb Business. Accessed 2026-09-16.
- Cyber Insurance Coverage & Products. Chubb; Cyber insurance product catalog: Cyber ERM, DigiTech ERM (technology E&O, media and cyber) and Pro ERM (non-licensed professional services); Marketplace quoting for eligible risks under $100 million revenue; first- and third-party coverage summaries. Accessed 2026-09-16.
- Umbrella & Excess Casualty Insurance. Chubb; Umbrella & Excess Casualty Insurance Options: Large Global and National Companies, Mid-Sized Companies, Energy Industry, Construction Industry; Express Umbrella Online Platform. Accessed 2026-09-23.
- Workers' Compensation Insurance for Small Business. Chubb; Total Account Solution: umbrella insurance providing an additional layer of coverage over existing liability policies. Accessed 2026-09-23.
Sources for the Umbrella and Excess Liability Insurance Guide
- Liability Insurance. Insurance Information Institute; Heading Umbrella Liability Insurance; sentence Umbrella Liability—also known as Excess Liability Insurance; underlying policies listed with limits; typically GL, auto and employers’ liability; starts when a covered loss exhausts the primary per occurrence limit; Most umbrella policies exclude EPL, professional liability, product recall, workers compensation, asbestos, pollution, war and terrorism. Accessed 2026-09-16.
- Commercial Insurance Guide. California Department of Insurance; Commercial Umbrella; excess over a basic liability policy; auto/CGL/WC or any liability policy can be covered; may respond if basic policy not in force or for gaps; SIR when no underlying. Accessed 2026-09-16.
- Lines of Insurance. California Department of Insurance; Umbrella or Excess Liability Policy: excess limits over existing liability; may provide additional coverages not provided by underlying policies. Accessed 2026-09-16.
- Coverage Hub. Coverdash; Excess & Specialty: Umbrella; Excess Liability. Accessed 2026-09-16.
- Products. Kinro; 09 Umbrella/Excess: additional limits above scheduled underlying policies; when to review; reviewed with. Accessed 2026-09-16.
