Attorney at law
Michael J. Brennan
40+ Years of Effective Personal Injury Law
Proudly Serving Clients in Orland Park + the Chicagoland area
Attorney Michael J. Brennan has been fighting for injury victims and their families in Illinois for nearly four decades. Since 1985, he has built a legal career rooted in trial experience, client-focused service, and a strong commitment to results. He opened the Law Offices of Michael J. Brennan in 1995 to provide individuals in Cook County and across the southwest suburbs with direct, one-on-one legal representation after life-changing injuries.
Today, Michael focuses exclusively on personal injury and wrongful death cases — including car accidents, nursing home abuse, medical malpractice, and catastrophic injury claims. He represents individuals and families in Orland Park, Tinley Park, Oak Lawn, Palos Heights, and throughout the Chicagoland area.
At his firm, every case is personally handled by Michael from beginning to end. Clients never get passed off to a junior associate or case manager. That level of personal involvement makes a difference — and it’s one of the reasons why Michael has earned the trust of clients throughout the region.
Michael J. Brennan: Background + Experience
Before founding his own practice, Michael served as an Assistant State’s Attorney for Cook County, where he prosecuted criminal cases and built a deep understanding of courtroom dynamics, evidence, and cross-examination. That early trial experience continues to serve his clients today, especially when personal injury cases move from the negotiation table into the courtroom.
Michael uses that prosecutorial insight to anticipate the strategies used by insurance companies and defense counsel. He is a skilled negotiator, but never hesitates to take a case to trial if that’s what’s required to pursue full and fair compensation.
Whether you’re recovering from a serious injury or dealing with the loss of a loved one, Michael will take the time to listen, investigate your case thoroughly, and guide you through every step of the legal process.
A Personal Approach to Every Case
Michael understands that reaching out to a lawyer usually follows a crisis — an accident, a traumatic injury, or the loss of a family member. He believes you deserve to work with someone who sees you as a person, not a case number.
At his firm, you’ll never be passed around or left wondering who’s handling your claim. Michael will be your point of contact — the person who answers your questions, makes the calls, and represents you in court.
If you’re looking for a local personal injury lawyer who combines experience, integrity, and personal attention, you’re in the right place.
No Legal Fees Unless We Win
Get a Free Case Evaluation
40+ Years of Experience
Millions Recovered for Our Clients
Michael is a Former State’s Attorney
SETTLEMENT
$8,400,000
Truck Accident
SETTLEMENT
$525,000
Car Accident
SETTLEMENT
$750,000
Medical Malpractice
SETTLEMENT
$500,000
Slip + Fall
SETTLEMENT
$375,000
Dog Bite
Frequently Asked Questions
What types of cases does Michael J. Brennan handle?
Michael focuses exclusively on personal injury and wrongful death cases. These include car accidents, medical malpractice, nursing home neglect, catastrophic injuries (like TBI or spinal cord injuries), and third-party workplace injury claims.
Will I work directly with Michael or be handed off to staff?
You will work directly with Michael. He personally handles every case from start to finish. You won’t be passed off to an associate or paralegal.
Where does Michael J. Brennan practice?
Michael serves clients in Orland Park, Tinley Park, Oak Lawn, Palos Heights, and throughout Cook County and Will County. His office is conveniently located in Orland Park.
Does Michael take criminal cases?
Michael’s practice is now solely focused on personal injury and wrongful death matters. If you’re looking for criminal defense representation, he may be able to refer you to a trusted colleague.
How much does it cost to hire Michael J. Brennan?
There are no upfront costs. All personal injury cases are handled on a contingency fee basis — meaning you only pay if we win your case.
Recent Personal Injury + Accident Articles
How Traffic Light Cameras Can Be Used As Evidence Of A Car Collision Accident
Cameras on traffic lights are everywhere. Originally installed to deter people from running red lights, traffic cameras have become an unexpected ally in resolving car accident disputes. These silent witnesses can provide crucial evidence in determining fault and...
Determining The Foreseeability Of Harm
The law assumes that a person who causes harm and is of sound mind should have foreseen that his or her actions will result in harming the next person. The concept of foreseeability of harm places liability on a defendant whose actions lead to harming another person....
The Most Common Injuries Resulting From Dog Bites
It's no surprise that dogs can be dangerous in the wrong hands or in the wrong situation. Often, we hear news stories of frightening dog attack incidents that have resulted in serious injury or even death. While the vast majority of dog bites are preventable, the fact...