Connor & Gallagher OneSource (CGO)

Insurance Broker - Insurance| Benefits|HR & Payroll|401k & 403b

Rating: 5/5 - (9 reviews)
Named the 2026 Top Independent Insurance Broker by Insurance Business Review. We combine strategic consulting, advanced data analytics, and hands-on administrative support to deliver sustainable, compliant, and cost-effective benefit programs. Our approach integrates day-to-day service execution with long-term planning to help employers reduce costs, improve outcomes, and maintain competitive benefits in a rapidly evolving regulatory environment.

About Connor & Gallagher OneSource (CGO)
- Founded in 1997
- Independent insurance broker
- Scored in the top percentile of client satisfaction scores (Net Promoter Score/NPS) 4 years in a row - 2023, 2024, 2025, & 2026.
- Based in Illinois but serve companies and their employees across the U.S.

CGO is a full-service insurance broker that partners with organizations in the areas of insurance, employee benefits, HR, recruitment process outsourcing, payroll and 401k. We have in-house consultants and customer service teams specializing in each field.

Company Details

Editor Verified
Address
750 Warrenville Road, Suite 400
Lisle, IL 60532
Phone
Company Size 100-249
Revenue Range $25M-$50M

Products & Services

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Property and Casualty Insurance

Property and Casualty Insurance

We start with a thorough review of your company and develop a risk management strategy based on our analysis and niche...

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Employee Benefits Broker

Employee Benefits Broker

We combine strategic consulting, advanced data analytics, and hands-on administrative support to deliver sustainable,...

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Employer Sponsored Retirement Plan

Employer Sponsored Retirement Plan

We Aim to Build a Stronger Retirement Plan for Your Company in 5 Steps CGO specializes in employer sponsored...

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Payroll

Payroll

Our solution streamlines payroll management by simplifying the entire process, greatly reducing processing time with...

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Recruitment Process Outsourcing

Recruitment Process Outsourcing

Our recruitment service is tailored to support your company from job requisition to offer acceptance, ensuring a...

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Financial Planning and Wealth Management

Financial Planning and Wealth Management

Our financial planning and wealth management team is committed to ensuring that everything we do is in the best...

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Liability Insurance

Liability Insurance

We start with a thorough review of your company and develop a risk management strategy based on our analysis and niche...

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Labor Law Poster Service

Labor Law Poster Service

Keeping your labor law posters up to date isn’t just a good practice — it’s a legal requirement. All employers with at...

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Auto Insurance

Auto Insurance

Use our personal insurance shoppers to find and compare rates from several highly rated insurance carriers and present...

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Resources & Content

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Should Your Organization Move to a PEP? A Side-by-Side Comparison with Traditional 401(k)s

Should you move your company retirement plan into a Pooled Employer Plan (PEP), or keep a traditional 401(k)? PEPs were...

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How Musculoskeletal Claims Are Killing Your Group Health Plan (& What To Do About It)

Musculoskeletal claims can account for 15% to 30% of total medical spend. That makes them one of the top drivers of...

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Why January is the Best Time to Reset Your Company 401(K) Plan Governance

The start of a new year is more than a calendar change — it’s an opportunity for plan sponsors to strengthen fiduciary...

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Employee Training Software (LMS) Offer

Easy to use and inexpensive employee training software includes 150+ workplace safety and compliance trainings,...

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Payroll & HRIS Service Offer

As your partner, we aim to offer a flexible, transparent, and streamlined Payroll and HRIS service at a competitive...

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HR Outsourcing Offer for 2025

We help over 150 small and mid-sized organizations manage the complexity of the employment relationship by executing...

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Retirement Plan Services

CGO specializes in 401(k) and 403(b) retirement plan strategies. We are an independent advisory firm, which allows us...

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Wise Financial Minds With Your Best Interests at Heart

Scott Krase is a Wealth Manager for the independent, fee-only wealth management division for Connor & Gallagher...

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Recruitment Process Outsourcing Service

Our recruitment service is tailored to support your company from job requisition to offer acceptance, ensuring a...

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