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Why Connor & Gallagher
Why Connor & Gallagher

One solution for your many business needs: Go CGO

Welcome to Connor & Gallagher OneSource, or CGO for short.  The name says it all.  We are the one source for all of your Human Capital and Risk Management needs. Now there’s only one place your business needs to go: Go CGO.

CGO is committed to providing you the best service the insurance industry has to offer.

The Client Experience

We scored nearly twice the insurance industry average for our Net Promoter Score, which is a rating of client satisfaction. We strive to continue to raise the bar each and every day to ensure our customers have the best experience possible.
CGO 2023 NPS

Our Happy
Clients Say It Best

I have never seen customer service at this level-they will go out of their way to make life easier for you, will do things for you that you actually should be doing yourself! I would really recommend them.”
Customer service is excellent and everyone that I have dealt with makes me feel that they care about our company and our employees.”

Our Happy
Clients Say it Best

Whether it is changing something on our auto coverage or adding a certificate holder the response time is exceptional.”
Anytime we have questions or need certificates of insurance for our customers they always respond on the same day.”

Our Happy
Clients Say it Best

They have taken a burden off me in an area I don’t know much about and know I have a great degree of liability.”
They are always up to date on the most current legislation.”

Our Happy
Clients Say it Best

client advocacy
During claims they always assist us and guide us to make the process less stressful for our company.”
They think about OUR company’s best interest.”

Our Happy
Clients Say it Best

communication & education
They help us understand the ever changing spider web that is the insurance industry.”
Communication is frequent and appropriate, without being annoying. I receive information about changes in the law that is relevant to my program. The educational webinars are succinct and informative.”
Connor & Gallagher Flyers

We’ll be your advocate.

Effective insurance agents aren’t just your broker, they’re your advocate.  In order to be the best advocate they can possibly be, your insurance agent must maintain strong carrier relationships. Connor & Gallagher OneSource is proud to maintain some of the strongest carrier-agent relationships in the industry. When your insurance agent has a strong relationship with their carrier, your business benefits through the following processes.

  • Quote Pricing
  • Claims Handling
  • Renewal Pricing

It's not just us who want you to know how strong our relationship is with our carriers, though. Our carriers want you to know, too! That's why they have chosen Connor & Gallagher OneSource to appear in advertisements that are targeted to business owners. Like these ads for ICW and The Hartford, featuring our very own Tom Connor.

We have a great selection of highly rated national and regional carriers.
Acuity Logo
Chubb Logo
Cincinatti Insurance Companies Logo
Harleysville Logo
The Zenith Logo
AmTrust Logo
Selective Logo
Zurich Logo
ICW Group Logo
Accident Fund Insurance Company of America
Pekin Insurance
Pie Insurance

More Reasons to Go CGO

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Continuous education, safety and reducing costs

Our goal is to help you understand what factors affect your insurance costs. We then help you implement practices that will help bring those costs down year after year.

Go CGO for your own go-to service team

We don’t have call centers; we have service teams dedicated to your account. These teams are comprised of licensed insurance professionals who take a personal approach to your day-to-day account servicing.
Best Insurance Agency to Work For



John Gardner

Managing Partner

John graduated from Xavier University with a Bachelor of Science in Finance and Marketing. He started in the insurance business on the company side working as an underwriter for the first 6 years of his career. John then moved to the agency side and joined Connor & Gallagher OneSource as a partner in 2003. Along with managing his own book of business, John manages all of the Property and Casualty sales staff. Outside of work John enjoys fishing, playing golf, and spending time with his family. John has been married to his wife Kim for over 25 years and they have 4 wonderful children.


Luke Barnett

Managing Partner

Luke Barnett joined CGO in 2005 and started the Employee Benefits Consulting Practice. Since then he has overseen CGO’s entry into the Retirement Planning, Payroll, and HR Consulting space. He attended and graduated from Wheaton College in 2003. He lives in Wheaton, IL with his wife and four children.


Bob Glonek


Bob Glonek graduated from Illinois State University with a BS in Economics. His insurance designations include CRIS (Construction Risk Insurance Specialist) and CLCS (Commercial Lines Coverage Specialist). After college Bob worked in the steel, paper, dairy distribution and construction industries. He specializes in insuring real estate, construction, private equity/ M&A due diligence, distributors and manufacturers both domestically and internationally. Bob has been married to his wife Laura for over 33 years, and has 2 children and 2 grandchildren. Outside of work they enjoy tennis, sailing, traveling and searching for new hidden gem restaurants.


Tom Connor


Tom Connor graduated from Illinois State University with a Bachelor of Science in Occupational Safety and Business Administration. He remains an active supporter of the Katie School of Insurance at Illinois State. Tom has 40 years of experience in the Commercial Insurance space. The last 25 years as President of Connor & Gallagher OneSource. Tom’s expertise includes large commercial risk management and placement. He has specific concentrations in loss sensitive workers’ compensation and large property exposures. Tom has been married to his wife Cindy for 44 years and has one son. He loves lake time, golf, traveling and being a St. Louis Cardinals baseball fan. Most of all he is inspired by watching those he has mentored become industry professionals and leaders in our field.


Dan Gallagher


Dan Gallagher graduated from Illinois State University with a Bachelor of Science degree in 1981. He is licensed in property, casualty, life & health insurance in the state of Illinois. Dan has been working in commercial lines business insurance since 1981. In 1997 Tom Connor and Dan started Connor & Gallagher Insurance Services (now called Connor & Gallagher OneSource) and have been fortunate enough to see it grow from the two of us to a staff of over 100 qualified insurance professionals today. In addition to his management responsibilities at Connor & Gallagher OneSource, Dan is still involved in managing his own book of commercial lines Property and Casualty business. He has customers that have had their insurance coverage placed through him going back to the early 1980s. Dan very much appreciates and values these long-term relationships and makes sure that he is always there to serve his customers’ needs. Dan and his wife have been married for over 35 years. They have 5 grown children that they are very proud of. Dan’s family has a summer home in southwest Michigan and they enjoy spending as much time there as they can with family and friends.

Connor & Gallagher Building

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