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William Robert Cassian

Personal injury Attorney at Joliet, IL

4.0   4 reviews
  • Licensed for 29 years
    State IL
    Acquired 1994
    Active and Authorized to Practice Law No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About William

Learn William’s areas of practice.

Practice areas
  1. Car accident

  2. Medical malpractice

    29 years

  3. Personal injury
    Mr. Cassian handles all types of injury cases from dog bites and slip and fall injuries to auto accidents and everything in between.

    29 years

  4. Animal and dog bites

Mr. Cassian's practice focuses on the litigation of civil matters such as personal injury, medical malpractice, commercial litigation and unemployment compensation claims. 
When he was 13 years old, he lost his father to a heart attack that should have been diagnosed and treated.  Over the course of four days where his father had seen several doctors complaining of left jaw and shoulder pain, his heart grew weaker until, on the fifth day, he died after pulling to the side of the road on his way home from work.  The doctors had missed the classic signs of heart attack probably because he was only 37 years old.  In any event, this is what led to Mr. Cassian seeking a career in the legal field.  He knows what it feels like to experience loss due to negligence.
Since taking and passing the State Bar Exam in 1994, Mr. Cassian has handled countless litigation matters in Northern Illinois Courthouses. He has conducted jury trials in Cook, Will, Dupage, Kane, Kankakee, Kendall, Winnebago and LaSalle Counties.  During the 11 years before he opened his own firm, he worked for a national law firm based in Illinois.  During his time there, he represented one of the largest retailers in the world, represented numerous hospitals, the insureds of several well-known insurance companies and numerous physicians and nurses in the defense of a variety of claims. 
"Over the years, I have developed a diverse civil practice. Since 1994, I have concentrated on personal injury, medical malpractice, unemployment compensation and collections work. For over a decade, I represented defendants such as doctors, hospitals and major retail establishments as well as the insureds of many large insurance companies. I have developed an extensive knowledge of what it takes to prepare a claim or case and present it to the insurance company or claim representative that represents the defendant. I have practiced in Cook, Dupage, Will, Kane, Kendall, Lake, LaSalle, Bureau, Champaign, Vermillion, Sangammon, Kankakee and many other Illinois Counties. Not only have I appeared before judges in these counties, I have presented trials to juries in many of these counties. I know what it takes to win the cases that I accept and I keep my clients informed along the way.
I have also performed countless unemployment compensation hearings on behalf of both employees and employers."

Contact William

Cassian & Carter, LLC
3077 W Jefferson St Ste 207
Joliet, IL, 60435-5264


4.0 / 5.0
  4 customer reviews
5 Star
4 Star
3 Star
2 Star
1 Star
Posted by Jennifer | May 26, 2023
This review is from a potential client who consulted with this attorney.
| Consulted Attorney
Highly Recommended
Bill's extremely knowledgeable, honest and most importantly; compassionate in regards to the death of our child. He explained everything clearly, answered all of our questions and was just a phone call away. He knows the law and has been doing this for a long time; if we could give him 10 stars - we would.
Posted by Samantha C. | November 19, 2015
This review is from a person who hired this attorney.
| Hired Attorney
Highly Recommended
Mr. Cassian is a great attorney. I had an unemployment hearing because my ex employer was contesting. I don't know what the decision is yet, but regardless he is knowledgeable and experienced. He knows exactly what needs to be questioned. He handled everything in a very calm and professional way. I would definitely hire again! He's real deal and is completely affordable. Other attorney's wanted to charge an arm and a leg for their services. He worked very hard on this for me and contacted me anytime I had questions prior to the hearing. I don't think any other attorney could have done a better job! Thanks Mr. Cassian!
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Posted by Laura | April 13, 2015
Successful Unemployment Appeal!
When my unemployment benefits were denied, I was referred to Mr. Cassian by another lawyer who had successfully negotiated a separation agreement. Mr. Cassian is knowledgeable, compassionate, honest and was a calming force when my self confidence was at an all time low. I am very grateful to him for walking/talking me through the appeal process. We won the appeal and the much needed unemployment checks began arriving within 24 hours.
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Posted by anonymous | July 8, 2021
This review is from a person who hired this attorney.
| Hired Attorney
I have never expected a lawyer to be so scared to go to trial. He lost his concentration often and totally messed up my case. I went to get another lawyer. Not recommended at all.
Response from William Cassian July 9, 2021
It should be noted that this person wrote this review anonymously. Despite that, I have had only one client in the past 10 years that has been unhappy with me, so I know exactly who this is. This client tripped and fell on a sidewalk in front of her residence. After a lengthy litigation process, we appeared before a settlement judge who hears these cases every day. The judge recommended an amount for settlement and we got exactly that amount. This client accepted the settlement and received $100,000 in her pocket tax free after paying attorney's fees, costs and medical. It should also be noted that, although she claims to have talked to another attorney, she stayed with me. I guess it really is true, even though you try your best, you can't please everyone.
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Contact for Details


AVVO RATING 7.8 (Very Good)

Work Experience

  • Partner
  • Cassian & Carter LLC
  • 2010 - Present
  • Partner
  • Hinshaw & Culbertson, LLP
  • 1999 - 2010


  • The John Marshall Law School
  • JD - Juris Doctor
  • 1994
  • Illinois State University
  • BA - Bachelor of Arts
  • 1991

Legal Cases

  • Medical Negligence
  • We recovered $1.3 million.
  • Slip and Fall
  • Recovered $550,000.00
  • Auto Accident
  • Recovered $725,000.00


  • Illinois State Bar Association
  • Member
  • 2010 - Present

Attorney endorsements

Received (5)
Given (10)
Endorse William
Unknown Attorney | Mar 15
Relationship: Fellow lawyer in community
"An excellent lawyer who treats clients with patience, care, understanding, and utmost professionalism - an even better person and I wholeheartedly recommend for future services."
Litigation Attorney | Sep 24
Relationship: Fellow lawyer in community
"I endorse this lawyer."
Personal injury Attorney | Mar 11
Relationship: Opposing Counsel on matter
"I endorse this lawyer."
Personal injury Attorney | Mar 11
Relationship: Worked together on matter
"I worked with Bill for several years. He is an outstanding attorney and I endorse him without hesitation."
Medical malpractice Attorney | Feb 12
Relationship: Fellow lawyer in community
"I endorse this lawyer."
Personal injury
Personal injury
Personal injury
Criminal defense
Personal injury
Criminal defense
Divorce and separation