Our Staff





Managing Partner Daniel Orenstein was born in Canton, Ohio, and raised in the greater Chicagoland area where he still lives today.


In 1997, he received his undergraduate degree in political science at The University of Iowa in Iowa City, Iowa. While at the University, Mr. Orenstein was President of numerous student organizations and was recognized by the Finkbine Association as one of the University of Iowa’s student leaders.


Mr. Orenstein attended Chicago-Kent College of Law, where he earned a J.D. in 2000. While in law school, Mr. Orenstein earned a Cali Award for excellence in the area of International Human Rights Law.

Mr. Orenstein has built an exceptional reputation with clients throughout the United States as an effective and aggressive advocate for their interests within the State of Illinois.


When Mr. Orenstein founded his own practice, Orenstein & Associates, P.C., in 2010, his vision was to offer personalized, superior services to clients with a wide variety of legal needs and concerns. He endeavored to create attorney-client relationships that were sustained not only by his professional capability, but especially by the high ethical standards that govern his professional and interpersonal conduct. As a result, Mr. Orenstein has successfully represented numerous high-profile clients in State and Federal Courts. He has consistently returned desired results, and he has maintained loyal, long-term, and highly-valued relationships with both corporate and individual clients.


Mr. Orenstein is a member of the Illinois State Bar and a member of the Bar for the United States District Court for the Northern District of Illinois. In addition to client representation, Mr. Orenstein also travels throughout the United States to provide training and education seminars on Workers’ Compensation Law and a variety of other topics to clients, businesses, and organizations.



Jeremy Brunner joined Orenstein and Associates in 2016.  Mr. Brunner litigates on behalf of clients in front of the Illinois Worker’s Compensation Commission as well as appeals at the Circuit Court.


Since being sworn in as an attorney in 2009, Mr. Brunner has been providing legal and consultation services to individuals, small businesses, and not-for-profit organizations regarding issues such as taxation, business modeling, and incorporation.  Mr. Brunner has previously interned at the Circuit Court of Cook County, Tax and Miscellaneous Remedies where he assisted the Court with the handling of Worker’s Compensation appeals.


Mr. Brunner received his bachelor’s degree from Illinois Wesleyan University and continued his education at the John Marshall Law School where he graduated with his juris doctorate and masters of law with honors from the Center for Taxation and Employee Benefits.



Practice Administrator Rina M. Rothmann was born and raised in the North suburbs of Chicago.


Ms. Rothmann came to Orenstein & Associates, P.C. in 2014 with a nearly two-decade-long tenure in non-profit program administration and direct service. From 2006 through 2013, Ms. Rothmann worked exclusively within domestic violence shelter programs in the greater Chicagoland area. As an advocate, she provided support to women, children, and families that had survived family and interpersonal violence. As a residential program supervisor and as an activist, she worked towards the development of innovative anti-violence programming, cross-cultural services, interfaith peace-building initiatives, and educational opportunities for vulnerable populations.


Prior to that, Ms. Rothmann lived in the Iowa City area for 10 years. She studied psychology, social work, and comparative religion at the University of Iowa and, upon completion of her coursework, she supported her community through the provision of case management services and the coordination of group home services for individuals with disabilities. She worked as a volunteer with Iowa City’s Rape Victim’s Advocacy Program, the Free Medical Clinic, and with the Women’s Resource and Action Center. She served on the University of Iowa’s Campus Climate Committee to institute substantial revision to the University’s sexual assault policies, and she worked as a community organizer and advocate in the interests of marginalized, under-served, and at-risk populations.