At-Bay vs Heffernan Insurance Brokers: How Do They Compare for Professional Liability (E&O) Insurance?

Heffernan Insurance Brokers' small-business division shops E&O with insurers for sole proprietors through fast-growing firms; At-Bay offers its own MPL, up to $5 million, via licensed insurance professionals.

At-Bay publishes specific MPL provisions; Heffernan includes E&O in its small-business service and says it can custom-build packages for industries outside its named sectors. ^1,⁵

What Are the Key Differences Between At-Bay and Heffernan Insurance Brokers Professional Liability (E&O) Insurance?

How Much Policy Detail You Can Review

At-Bay lists MPL features including acquired-subsidiary coverage, independent-contractor coverage and disciplinary-proceedings defense. Heffernan’s small-business page names E&O as a coverage but gives no comparable line-specific terms:

Heffernan describes errors and omissions coverage as protecting against claims for problems with a company's product or service that result in a financial loss to a client. ⁵Company-reported. Small Business Insurance page as read on 2026-09-23; the page does not list specific exclusions, claims-made versus occurrence form, or endorsements.

At-Bay gives you more detail to use in an initial comparison; ask Heffernan for the policy form, limits and exclusions behind its offering. ¹

Which Business Each Route Fits

At-Bay describes eligibility for businesses across revenue sizes, subject to state restrictions. Heffernan says its small-business team serves sole proprietors through growing companies across several industries and can custom-design packages for unlisted sectors. If you have an unusual industry, ask Heffernan about a tailored package; for listed policy provisions, start with At-Bay’s MPL page. ¹ ⁵

How You Start

At-Bay takes broker submissions by email or through its Broker Platform. Heffernan asks buyers to contact its small-business division to request a quote and build a package. Ask what documents each needs and whether the Heffernan package will use a standard or custom E&O form. ⁴ ⁵

What Should You Confirm in At-Bay and Heffernan Insurance Brokers Professional Liability (E&O) Insurance Quotes?

Ask Heffernan for the policy wording, limits, exclusions and issuing insurer. ⁵
Ask At-Bay which insurer will issue its MPL and which state restrictions apply. ¹
Confirm whether Heffernan will custom-design your package or use a standard E&O form. ⁵
Compare the actual limits and premium offered by both. ⁵ ¹

At-Bay vs Heffernan Insurance Brokers Professional Liability (E&O) Compared

At-Bay vs Heffernan Insurance Brokers: Professional Liability (E&O) Insurance: documented features by provider

Criteria	At-Bay Miscellaneous Professional Liability (MPL) Insurance	Heffernan Professional Errors and Omissions Brokerage
Who It’s For	At-Bay says it provides primary MPL for businesses of all revenue sizes with limits up to $5 million, subject to state restrictions and eligibility requirements detailed in a separate MPL appetite guide. ¹Company-reported. Current MPL appetite paragraph; the linked appetite guide's specific eligibility requirements were not independently opened for this record.	Heffernan's small-business division says it serves sole proprietors through fast-growing companies across industries including construction, food, health care, hospitality, nonprofits, real estate, technology, transportation, and vintners and growers, and will custom-design a package for industries not listed. ⁵Company-reported. Small Business Insurance page as read on 2026-09-23; not exclusively E&O-specific, but describes the buyer base for the page listing this coverage.
How to Apply	At-Bay directs MPL submissions to underwriting by email or through automatic quotes on its Broker Platform, which At-Bay describes as a workflow of creating a quote, customizing limits and retentions, and binding the policy. ^1,⁴Company-reported. Current submission instructions and the general broker-platform workflow description; MPL-specific automation details were not separately confirmed.	Heffernan directs small-business buyers to contact the firm's small-business division to request a quote and says it will research and build a custom package for industries not already listed. ⁵Company-reported. Small Business Insurance page as read on 2026-09-23.
Coverage Features	At-Bay lists MPL coverage highlights including automatic coverage for acquired subsidiaries, claims-made-and-reported coverage, coverage for independent contractors, disciplinary-proceedings defense, a duty-to-defend contract, personal-injury coverage (including emotional distress), punitive damages where insurable, a professional-services definition written for each insured, and an 80/20 hammer clause. ¹Company-reported. Product-page coverage-highlights list; an 80/20 hammer clause is a settlement provision where the insurer pays 80% and the insured pays 20% of costs after the insured declines a recommended settlement. The issued policy and declarations control actual wording, limits and exclusions.	Heffernan describes errors and omissions coverage as protecting against claims for problems with a company's product or service that result in a financial loss to a client. ⁵Company-reported. Small Business Insurance page as read on 2026-09-23; the page does not list specific exclusions, claims-made versus occurrence form, or endorsements.
Role in This Line	At-Bay markets MPL as one of its own named insurance products, sold through its disclosed producer, At-Bay Insurance Services LLC, with the product page directed at "properly licensed insurance professionals" submitting business rather than at direct retail buyers. ^1,²Company-reported. Current MPL product page and license disclosures; this describes the distribution channel, not who bears the underwriting risk.	Heffernan lists errors and omissions among the coverages its small-business division places for clients, shopping the line with insurers rather than underwriting it. ⁵Company-reported. Small Business Insurance page as read on 2026-09-23; no dedicated professional-E&O product page was found.