---
title: "Aon vs Founder Shield: Professional Liability (E&O) Insurance"
description: "Aon describes tailored professional-liability structures; Founder Shield lists defense, regulatory proceedings and lost earnings for venture and technology-oriented buyers."
canonical: "https://spot.insure/compare/aon-vs-foundershield/professional-errors-omissions"
page-type: "line-comparison"
updated-at: "2026-09-30"
comparison-pair: "aon-vs-foundershield"
provider-a: "aon"
provider-b: "foundershield"
coverage-line: "professional-errors-omissions"
---

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-foundershield/professional-errors-omissions)

## Agent Guide

**What this page is:** Focused comparison of Aon and Founder Shield for Professional Liability (E&O) 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 Professional Liability (E&O) Insurance questions about Aon versus Founder Shield. 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 Founder Shield for Professional Liability (E&O) Insurance: how do they differ?
- Which is better for Professional Liability (E&O) Insurance, Aon or Founder Shield?
- What does Aon or Founder Shield publish about Professional Liability (E&O) Insurance (limits, eligibility, claims, add-ons)?
- What should I confirm in a quote for Professional Liability (E&O) Insurance from Aon or Founder Shield?

**Key facts:**
- Line: Professional Liability (E&O) Insurance. Providers: Aon and Founder Shield.
- 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 Founder Shield](https://spot.insure/compare/aon-vs-foundershield) — parent: all coverage lines for this pair
- [Professional Liability (E&O) Insurance guide](https://spot.insure/coverage/professional-errors-omissions) — coverage explainer for this line
- [Aon profile](https://spot.insure/insurance-providers/aon) — provider profile (evidence)
- [Founder Shield profile](https://spot.insure/insurance-providers/foundershield) — provider profile (evidence)
- [Aon vs Founder Shield Commercial Property Insurance](https://spot.insure/compare/aon-vs-foundershield/commercial-property) — sibling comparison (other line, or other pair for this line)
- [Aon vs Founder Shield Crime Insurance](https://spot.insure/compare/aon-vs-foundershield/crime) — sibling comparison (other line, or other pair for this line)
- [Aon vs Founder Shield Cyber Insurance](https://spot.insure/compare/aon-vs-foundershield/cyber) — sibling comparison (other line, or other pair for this line)
- [Aon vs Founder Shield D&O Insurance](https://spot.insure/compare/aon-vs-foundershield/directors-officers) — sibling comparison (other line, or other pair for this line)
- [Aon vs Founder Shield Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-foundershield/employment-practices) — sibling comparison (other line, or other pair for this line)
- [Aon vs Founder Shield Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-foundershield/fiduciary) — sibling comparison (other line, or other pair for this line)
- [Aon vs Founder Shield General Liability Insurance](https://spot.insure/compare/aon-vs-foundershield/general-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs Founder Shield Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-foundershield/workers-compensation) — sibling comparison (other line, or other pair for this line)
- [AIG vs Aon Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-aon/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [AIG vs Founder Shield Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-foundershield/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Aon Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-aon/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Founder Shield Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-foundershield/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Aon vs At-Bay Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-at-bay/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Aon vs The Baldwin Group Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-baldwin/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)

# Aon vs Founder Shield: How Do They Compare for Professional Liability (E&O) Insurance?

Aon describes tailored professional-liability structures; Founder Shield lists defense, regulatory proceedings and lost earnings for venture and technology-oriented buyers.

## Research Scope and Use

Use this comparison to evaluate Aon and Founder Shield for Professional Liability (E&O) 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

Aon describes tailored E&O placement for professional firms. Founder Shield names defense costs, regulatory proceedings, lost earnings and employee or contractor errors among its E&O protections. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [9](https://foundershield.com/coverage/errors-and-omissions-insurance/ "Errors & Omissions 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 Founder Shield Insurance?

Founder Shield is a broker for venture-backed startups: you apply online in under 15 minutes, and an advisor shops its 200+ carrier markets to build a program that changes as your products and locations change. It doesn't insure you itself, so ask which insurer carries each policy. [4](https://foundershield.com/ "Founder Shield") [5](https://foundershield.com/startup-insurance/ "Startup Insurance") [6](https://foundershield.com/insurance-faqs/general-faqs/how-do-you-decide-which-carriers-to-approach/ "How Do You Decide Which Carriers to Approach?") [7](https://foundershield.com/insurance-faqs/general-faqs/what-if-our-company-grows-a-lot-or-things-change-during-the-year/ "What If Our Company Grows A Lot or Things Change During the Year?") [8](https://foundershield.com/terms-of-service/ "Terms of Service")

[Founder Shield profile](https://spot.insure/insurance-providers/foundershield)

## What Is Professional Errors and Omissions (E&O) Insurance?

Professional liability can help pay defense costs and covered losses when a client says your advice or service caused financial harm. If customers rely on your work, list every service you provide and check the claims-made reporting and prior-work terms. [11](https://www.tdi.texas.gov/commercial/pl-faq.html "FAQ: Professional liability insurance") [12](https://www.iii.org/article/professional-liability-insurance "Professional liability insurance") [13](https://www.sba.gov/counseling/launch-your-business/#business-insurance "Get business insurance") [14](https://www.hiscox.com/documents/pl-sample-policy-wording.pdf "Professional Liability – US Direct Errors and Omissions Insurance")

## Key Differences in Professional Liability (E&O) Insurance

### Coverage and Policy Design

Aon says its professional-services practice tailors E&O structures to firm needs, naming law, accounting and consulting as its focus. Founder Shield targets venture firms, consultants, media and advertising agencies, SaaS marketplaces and software developers; its E&O description includes defense costs, disciplinary or regulatory proceedings, lost earnings and errors by employees or contractors. For a venture-backed or software business, those listed protections give specific issues to test in a quote. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [9](https://foundershield.com/coverage/errors-and-omissions-insurance/ "Errors & Omissions Insurance")

### Buying Route and Terms

Founder Shield is a retail brokerage, not the risk-bearing insurer. It says it places coverage with carriers rated A- or better by AM Best and routes applications through its website or an advisor, then approaches carriers. Aon likewise arranges or advises and does not name the carrier for an account. Founder Shield says E&O is often packaged with tech E&O and cyber, while Aon’s overview leaves bundling open. Confirm policy boundaries and insurer. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [9](https://foundershield.com/coverage/errors-and-omissions-insurance/ "Errors & Omissions Insurance")

## What to Confirm in Professional Liability (E&O) Insurance Quotes

- Ask Founder Shield which carrier is proposed and whether E&O is separate from tech E&O and cyber. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [9](https://foundershield.com/coverage/errors-and-omissions-insurance/ "Errors & Omissions Insurance")
- Ask Aon to identify the insurer, limit, defense coverage and regulatory-proceeding terms. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [9](https://foundershield.com/coverage/errors-and-omissions-insurance/ "Errors & Omissions Insurance")

## Offering Details

| Criteria | Aon Professional Liability / E&O brokerage and risk-advisory offering | Founder Shield Errors & Omissions Insurance |
| --- | --- | --- |
| Role in This Line | Aon presents Professional Liability / E&O as a line its Professional Services Practice helps arrange or advise on for professional-service firms. Aon is describing a global brokerage and advisory service, not issuing the underlying policy. The producing legal entity and carrier for any particular placement are not named on this page. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (Evidence: Company-reported; scope: Aon’s global professional-services practice page. This establishes a marketed brokerage/advisory offering, not policy issuance or account-specific placement..) | Founder Shield is a retail insurance brokerage, described on its site as “the innovation arm of The Baldwin Group,” and places Founder Shield Errors & Omissions Insurance with third-party carriers rather than underwriting the policy itself. [10](https://foundershield.com/about-us/ "About Us") (Evidence: Company-reported; scope: About-us page; applies to Founder Shield's brokerage model generally, restated here for this line..)<br><br>Founder Shield says E&O (professional liability) is often packaged with technology E&O and cyber coverage since the two types of claims tend to intertwine. [9](https://foundershield.com/coverage/errors-and-omissions-insurance/ "Errors & Omissions Insurance") (Evidence: Company-reported; scope: Errors & Omissions Insurance 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/professional-services-practice "Professional Services Practice") (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..) | Founder Shield says it places policies, including Founder Shield Errors & Omissions Insurance, only with carriers rated A- or better by AM Best, chosen for the client's industry. It does not name the issuing insurer for this line; that depends on which carrier the policy is placed with. [6](https://foundershield.com/insurance-faqs/general-faqs/how-do-you-decide-which-carriers-to-approach/ "How Do You Decide Which Carriers to Approach?") (Evidence: Company-reported; scope: General carrier-selection FAQ, not specific to this line's placements..) |
| Who It’s For | Aon identifies law, accounting and consulting firms as the audience for its global Professional Services Practice. That audience scope does not establish eligibility for every firm or other business. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (Evidence: Company-reported; scope: Audience described for Aon’s global professional-services practice. It does not establish U.S. state availability or underwriting eligibility for a placement..) | Founder Shield markets E&O to venture capital firms, consultants, media and advertising agencies, SaaS marketplaces, and software developers who perform services for other parties. [9](https://foundershield.com/coverage/errors-and-omissions-insurance/ "Errors & Omissions Insurance") (Evidence: Company-reported; scope: Errors & Omissions Insurance product page..) |
| Coverage Features | Aon describes professional liability as addressing professional-services firms’ liability exposure and says it tailors coverage structures to a firm’s needs. It identifies E&O as a commonly used name for professional-liability insurance; actual policy terms are not stated. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (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..) | Founder Shield lists defense costs, defense against disciplinary or regulatory proceedings, lost-earnings coverage, and claims from errors by employees or contractors as what E&O responds to. [9](https://foundershield.com/coverage/errors-and-omissions-insurance/ "Errors & Omissions Insurance") (Evidence: Company-reported; scope: Product page; the issued policy and declarations control actual coverage..) |
| 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/professional-services-practice "Professional Services Practice") (Evidence: Not publicly disclosed; scope: Aon’s global practice page as reviewed 2026-09-30; no quote, bond form or issued policy was reviewed..) | Confirm in your quote. |
| Risk Services | Aon says its professional-services advisors use industry knowledge, insights, data and tools to support risk-management and human-capital decisions. This is a company-described advisory service, not a claim outcome or policy benefit. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (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. | You request Founder Shield Errors & Omissions Insurance through Founder Shield's website or an insurance advisor rather than binding coverage directly; Founder Shield says its placement team then approaches carriers on the client's behalf. [10](https://foundershield.com/about-us/ "About Us") [6](https://foundershield.com/insurance-faqs/general-faqs/how-do-you-decide-which-carriers-to-approach/ "How Do You Decide Which Carriers to Approach?") (Evidence: Company-reported; scope: About-us and carrier-selection pages describe the general placement process, not a line-specific application form..) |

## Full Comparison

- [Aon vs Founder Shield](https://spot.insure/compare/aon-vs-foundershield): all coverage lines, business roles, service and claims.
- [What Is Professional Errors and Omissions (E&O) Insurance?](https://spot.insure/coverage/professional-errors-omissions): Professional liability can help pay covered defense costs and losses when a client says your advice or service caused financial harm; check services and reporting terms.
- [Aon vs Founder Shield Commercial Property Insurance](https://spot.insure/compare/aon-vs-foundershield/commercial-property)
- [Aon vs Founder Shield Crime Insurance](https://spot.insure/compare/aon-vs-foundershield/crime)
- [Aon vs Founder Shield Cyber Insurance](https://spot.insure/compare/aon-vs-foundershield/cyber)
- [Aon vs Founder Shield D&O Insurance](https://spot.insure/compare/aon-vs-foundershield/directors-officers)
- [Aon vs Founder Shield Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-foundershield/employment-practices)
- [Aon vs Founder Shield Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-foundershield/fiduciary)
- [Aon vs Founder Shield General Liability Insurance](https://spot.insure/compare/aon-vs-foundershield/general-liability)
- [Aon vs Founder Shield Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-foundershield/workers-compensation)
- [AIG vs Aon Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-aon/professional-errors-omissions)
- [AIG vs Founder Shield Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-foundershield/professional-errors-omissions)
- [Alliance Risk vs Aon Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-aon/professional-errors-omissions)
- [Alliance Risk vs Founder Shield Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-foundershield/professional-errors-omissions)
- [Aon vs At-Bay Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-at-bay/professional-errors-omissions)
- [Aon vs The Baldwin Group Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-baldwin/professional-errors-omissions)

## 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. [Professional Services Practice](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice). Aon; Named professional-services audiences and global advisory role, lines 125–128; line offerings and explanations lines 131–190; contact link lines 120–122. Global practice page; no U.S. state or account-specific placement schedule.. Accessed 2026-09-30.

### Founder Shield

4. [Founder Shield](https://foundershield.com/). Founder Shield; Opening broker description; Specialized Practices; Smart Tech, Smarter People; quote and sign-in links. Accessed 2026-09-15.
5. [Startup Insurance](https://foundershield.com/startup-insurance/). Founder Shield; What Coverage Does your Startup Need?; Why Startups Choose Founder Shield; Industries We Serve; Essential Policies to Consider section. Accessed 2026-09-15.
6. [How Do You Decide Which Carriers to Approach?](https://foundershield.com/insurance-faqs/general-faqs/how-do-you-decide-which-carriers-to-approach/). Founder Shield; FAQ answer on carrier selection: works exclusively with A-rated (AM Best) carriers, matched by industry appetite. Accessed 2026-09-23.
7. [What If Our Company Grows A Lot or Things Change During the Year?](https://foundershield.com/insurance-faqs/general-faqs/what-if-our-company-grows-a-lot-or-things-change-during-the-year/). Founder Shield; Carl Niedbala answer, November 25, 2024: operational changes and coverage adjustments. Accessed 2026-09-15.
8. [Terms of Service](https://foundershield.com/terms-of-service/). Founder Shield; Opening agreement; License Status; Representations and Disclaimers Related to Products or Services; Fees and Charges; Void Where Prohibited. Accessed 2026-09-15.
9. [Errors & Omissions Insurance](https://foundershield.com/coverage/errors-and-omissions-insurance/). Founder Shield; What Is Errors & Omissions Insurance?; Who Needs Errors & Omissions Insurance Coverage?; What Does Errors and Omissions Insurance Cover?. Accessed 2026-09-23.
10. [About Us](https://foundershield.com/about-us/). Founder Shield; “Founder Shield is the innovation arm of The Baldwin Group”; company history and mission. Accessed 2026-09-23.

### Professional Liability (E&O) Insurance Guide

11. [FAQ: Professional liability insurance](https://www.tdi.texas.gov/commercial/pl-faq.html). Texas Department of Insurance; What’s professional liability coverage?; What types of damages…; What’s general liability insurance?; Do I need professional liability… if I have general liability…?; Is professional liability insurance required?; Can a client require…?; What’s the difference between occurrence policies and claims-made policies. Accessed 2026-09-16.
12. [Professional liability insurance](https://www.iii.org/article/professional-liability-insurance). Insurance Information Institute; Opening paragraphs (professional services/advice and E&O name); Claims not covered by general liability; What types of businesses need professional liability insurance?; What’s covered… and what’s not (claims-made versus occurrence, defense and judgments, non-financial/intentional limits, BOP/in-home exclusion). Accessed 2026-09-16.
13. [Get business insurance](https://www.sba.gov/counseling/launch-your-business/#business-insurance). U.S. Small Business Administration; Six common types of business insurance table. Accessed 2026-09-16.
14. [Professional Liability – US Direct Errors and Omissions Insurance](https://www.hiscox.com/documents/pl-sample-policy-wording.pdf). Hiscox Inc. specimen; About this Policy / Coverage for Claims Made Against You; I.A Insuring Agreement; I.B Defense; I.C Settlement; II.A Notice of Claims; II.C Optional Extended Reporting Period; III.A, III.K, III.M, III.R, III.S Exclusions; IV.A–B Limits and Deductible; VI.O Professional Services; VI.U Wrongful Act. 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).

## Founder Shield Reviews

Review Score: 7.4 / 10 from 1 rated source, equally weighted.

Founder Shield has too little independent customer feedback for a reliable verdict. One positive Trustpilot review does not establish a service track record.

- Trustpilot: TrustScore 3.7 (5 stars); 1 reviews. Trustpilot profile for foundershield.com; one US customer review, categorized as insurance broker/business insurance. Period: Review 2023-03-14; none in prior 12 months. Checked 2026-09-25. [foundershield.com Reviews | Trustpilot](https://www.trustpilot.com/review/foundershield.com)

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

## Agent and Developer Resources

- [Markdown page](https://spot.insure/compare/aon-vs-foundershield/professional-errors-omissions.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)