Firm Administrator

“Other than founder John Eder, Terri Jo O’Donnell is our longest-serving team member,” says partner Shelly Casella-Dercole of the firm’s secretary, who started in 1989. “Terri Jo knows everything about our business. She is a master at proofing audit reports to make sure our audit clients get the best possible audit report. She is also the go-to for almost everything in the office.”


O’Donnell’s main areas of emphasis are client relations and employee support. “I take pride in assisting clients with questions that they have,” the Marengo native says. “Clients tend to be leery of anything related to the government, so it feels good when I can relieve their anxiety by answering what I consider an easy question. As for employee support, I believe one of my main jobs is to help the accountants and support staff in any way to make their job easier. I try to help with anything that they ask — and I try to do it in a very timely manner.”


Prior to joining Eder, Casella & Co., O’Donnell worked in a bank’s mortgage department. Throughout her years at the firm, she has seen plenty of growth and change, but one thing has remained the same — the family-oriented atmosphere. “The managing partners realize that an employee’s family is most important, and are very accommodating to time off requests and emergencies, as well as also including family in various company functions,” she says. “It truly is a pleasure coming to work each day if you work with, and for, people that care about you.”


When not on the job, the widowed mother of two grown children — Ashley and Michael — enjoys “reading, walking my dogs, and spending time with my family, especially my two granddaughters,” she says. “There’s a quote I live by: ‘Enjoy life today, because yesterday is gone and tomorrow is never promised.’”



Get to Know Terri Jo — Five Facts:


1. If I wasn’t working at the firm, I’d be… “A realtor.”


2. I’m motivated by… “My family. I have a good work ethic that I tried to instill in my children. I enjoy working, and I’ve done the best job that I can so that they have been able to reach some of their goals (college, careers, etc.).”


3. My first job was… “A cashier in a small department store in Marengo. I enjoyed working with customers and keeping the store neat and organized.”


4. People would be surprised to know… “I’m a huge NASCAR fan!”


5. My hero is… “My mom. She has been through a lot in childhood and adulthood, but she always made sure that my dad, brother, and I had what we needed. She’s always there for all of us, as well as my bosses and co-workers — she bakes for them.”



Connect with Terri Jo

Email:  todonnell@edercasella.com

Direct:  815.331.8131


5400 West Elm Street

Suite 203

McHenry, IL 60050

(815) 344-1300

(815) 344-1320 Fax


760 West Main Street

Suite 100

Barrington, IL 60010

(847) 382-3366

(847) 382-0608 Fax


Monday - Friday

8:00 AM - 4:30 PM


Monday - Friday

8:00 AM - 4:30 PM


6071 Washington Street

Unit B

Gurnee, IL 60031

(847) 336-6455

(847) 336-9594 Fax


Monday - Friday

8:00 AM - 4:30 PM

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