Habla Español 312.263.7560
Habla Español312.263.7560312.263.7560

Mark A. DePaolo


With over 30 years of experience handling Illinois workers compensation claims, you’d be hard pressed to find a workers’ compensation circumstance Mark DePaolo hasn’t handled. Having briefed and argued numerous high-profile cases before the Illinois Workers’ Compensation Commission and the Appellate Court of Illinois, Mark’s vast knowledge base and experience puts his clients in the very best of hands.

Mark’s impressive line of credentials include having served as a past President of the Workers’ Compensation Lawyers Association, an organization he is still a current member of. Super Lawyers, an organization dedicated to recognizing exceptional lawyers through independent research and peer nominations, has selected Mr. DePaolo as an Illinois Super Lawyer a whopping seven times. But that’s not all! In 2010, Best Lawyers in America honored Mark as one of the finest Workers’ Compensation Lawyers in the field.

Mark DePaolo’s educational journey began in the Windy City, where he received his Bachelor of Arts undergraduate degree from DePaul University before earning his Juris Doctorate from Northern Illinois University Law School.

Since being admitted to the Illinois State Bar Association and the United States District Court for Northern Illinois in 1979, Mark has dedicated his career to helping people injured on the job find the compensation they are entitled to. His compassionate client focused approach and wealth of experience truly put Mark DePaolo a cut above the rest when it comes to Workers’ Compensation Law.

– Mark A. DePaolo, January 1994, Installation Speech as President of Illinois Workers’ Compensation Lawyers Association

If an industrialized society does not have a working class that
equals a middle class, then it has nothing!

Let’s Discuss Your Case
Thank you for your interest in DePaolo & Zadeikis.
Please fill out the form below and we will contact you as soon as possible

COVID-19 (Coronavirus) Update

As efforts concerning the containment of COVID-19 (Coronavirus) continue to evolve here in the U.S. and around the world, we want to assure you that Depaolo & Zadeikis remain committed to three important priorities:

As such, we continue to monitor the ongoing COVID-19 situation and decided to follow the guidelines and recommendations of the CDC and other state and local officials. In accordance with these recommendations and until further notice, DePaolo & Zadeikis Attorneys at Law will be making modifications to the delivery of our services until further notice. To be sure, our services will continue to be available to you – just differently as the pandemic response evolves.

Our offices remain open for business; however, we encourage all existing clients to help us limit exposure and the potential spread of COVID-19 by avoiding in-office meetings. We remain open for business virtually during normally scheduled work hours 9:30 am to 4:00 pm, Monday through Friday). All email, fax, telephone, and other electronic communication will continue without interruption. If you have a scanner please scan documents and send them to us in.PDF format. If you do not have a scanner, there are smartphone apps available such as CamScanner, Adobe Scan and Genius Scan (and many others), that will turn your smartphone into a document scanner at zero or little cost.

Our local courts continue to update and modify their policies in response to the current COVID-19 situation as well, and we are monitoring those to navigate the impact on your claims. At this point, the Courts and the Illinois Workers Compensation System are operating on a partial basis. We are continuing to advance our cases on an electronic basis as well as telephonically. As the situation evolves, we will advise our clients.

We also know that many of you have been personally impacted in a number of ways, and we apologize for any inconvenience these modifications may cause you but of course we are all experiencing this disruption together and will get through it together. We will resume normal operations as soon as the local, state and national governments give instructions that it is reasonable to do so. We appreciate your flexibility as we do our part to help bring this unprecedented situation under control.

Again, we are fully operational and are actively working on your claims. If there is anything you need, please feel free to contact our office (telephonically or electronically) during office hours so that we can direct your call and follow up accordingly.