Aon vs 
HUB International: 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. HUB International: hUB describes umbrella and excess liability coverage as protection against potentially catastrophic liability claim settlements and judgments that exceed the limits of a client's underlying general liability, auto or employers'-liability policies. 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 HUB International?
HUB suits technology businesses seeking a specialist broker—its practice says it insures more than 5,000 technology companies; qualifying small accounts can use Insureon online, while mid-market buyers need an advisor. 4,5,6
Read the HUB International profile
Read the HUB International Umbrella and Excess Liability Insurance page
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. 8,9,10,11,12
Key Differences in Umbrella and Excess Liability Insurance
How the excess layer follows underlying coverage
Aon describes 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. HUB International describes hUB describes umbrella and excess liability coverage as protection against potentially catastrophic liability claim settlements and judgments that exceed the limits of a client's underlying general liability, auto or employers'-liability policies. Ask whether the proposed form follows the underlying wording or adds a stated feature, and identify the policies and exhaustion points it requires. 3 7
Capacity and buyer segment
Aon describes 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. HUB International describes hUB describes a "Global Reach, Local Touch" approach built on extensive carrier relationships and says it applies risk-services, claims, litigation and analytics expertise across its casualty programs, which include umbrella and excess placements. Compare the stated industry appetite and available capacity with your operations, then request the actual limit and attachment point for your account. 3 7
Broker or insurer service route
Aon describes 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. HUB International describes hUB brokers umbrella and excess liability insurance through its casualty practice rather than underwriting the coverage itself. Ask who handles underwriting questions, renewal changes and claims advocacy for the layer. 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 HUB International to confirm the quoted coverage trigger, underlying policies and exclusions; its offering says hUB describes umbrella and excess liability coverage as protection against potentially catastrophic liability claim settlements and judgments that exceed the limits of a client's underlying general liability, auto or employers'-liability policies. 7
Aon and HUB International 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 reviewsHUB International Review Score
Review Score
2 rated sources
Customers who reviewed HUB on BBB rate it 1 out of 5, but that is only 7 reviews for a very large broker. BBB's own business grade is A-.[7][6]
Read HUB International reviewsAon vs HUB International Umbrella and Excess Liability Compared
Aon vs HUB International: Umbrella and Excess Liability Insurance: documented features by provider
| Criteria | Aon Umbrella and Excess Liability brokerage and risk-advisory offering | HUB International Umbrella and Excess Liability Insurance 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 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. | HUB brokers umbrella and excess liability insurance through its casualty practice rather than underwriting the coverage itself. 7Company-reported. Casualty insurance product page as read 2026-09-23; the page does not name an issuing insurer. |
| 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. | The casualty insurance page does not name an issuing insurer for umbrella or excess coverage; HUB places this coverage with insurers that vary by client and program. 7Not found in reviewed sources. Checked the casualty insurance page on 2026-09-23; no carrier is disclosed there. |
| 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. | HUB says its casualty expertise, which includes umbrella and excess liability, spans transportation, construction, healthcare, hospitality, manufacturing/distribution and real estate industries. 7Company-reported. Product-page industry list for the broader casualty practice; not umbrella-specific eligibility criteria. |
| 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. | HUB describes umbrella and excess liability coverage as protection against potentially catastrophic liability claim settlements and judgments that exceed the limits of a client's underlying general liability, auto or employers'-liability policies. 7Company-reported. Product-page coverage description; the issued policy and its exclusions control an actual claim. |
| 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. | Published umbrella or excess limit amounts, attachment points or premium information were not found on the casualty insurance page. 7Not publicly disclosed. Checked the casualty insurance page on 2026-09-23; limits are set on the quote and declarations. |
| 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. | HUB describes a "Global Reach, Local Touch" approach built on extensive carrier relationships and says it applies risk-services, claims, litigation and analytics expertise across its casualty programs, which include umbrella and excess placements. 7Company-reported. Product-page service description; a company-reported capability describing the broader casualty practice, not umbrella-specific service detail. |
Related Pages for Aon vs HUB International
Umbrella and Excess Liability Pages for Aon and HUB International
Other Coverage Lines Compared for Aon vs HUB International
Other Umbrella and Excess Liability Insurance Provider Comparisons
Sources for Aon vs HUB International
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 HUB International
- About Us. HUB International; Opening description; 1998 formation of HUB International Limited; 2022 Insureon acquisition; headquarters and employee/office counts. Accessed 2026-09-16.
- Contact Us. HUB International; Business Solutions paths for Commercial Insurance Solutions versus Small Commercial Insurance Solutions via Insureon; office search. Accessed 2026-09-16.
- Insurance for Technology Companies. HUB International; Technology Company Insurance & Risk Management: startup, software, hardware and digital-media introduction; Business Coverage and People Protection lists; technology-client count. Accessed 2026-09-16.
- Comprehensive Casualty Insurance Solutions. HUB International; Umbrella & Excess Liability section: protection for potentially catastrophic liability claim settlements and judgments; General & Product Liability section; Global Reach, Local Touch carrier-relationship description; industries served list; Connect With a HUB casualty insurance broker. 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.
