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“Success through research,
ingenuity and dedication.”



“Bravo to Sherman Marek, the lawyer who is taking on resident training, the indentured servant system in today’s medical establishment. . . Sleep-deprived residents provide nearly free labor. . . but at a great cost to themselves. . . Both patients and resident doctors deserve better.”

About Us

At the Marek Law Office, we investigate, develop and pursue major state and federal lawsuits nationwide. Our philosophy is that success arises from carefully investigating facts, thoughtfully applying the law, and steadfastly pursuing our clients’ goals.

If you have been directed to us, you may have potentially significant legal claims or information important to such claims. In today’s world of highly sophisticated laws and frequently complex facts, it is not always clear when you have claims or available legal remedies. Of course, you pay nothing unless we recover money for you.

The complicated, expensive, sweeping and prolonged nature of major lawsuits today is frequently beyond the ability of anyone law firm acting alone. The traditional approach is outdated and most individual firms are unable to rely solely on their own limited funds, generalized knowledge of the law, and localized operations.

At the Marek Law Office, we selectively recruit other law firms nationwide to assemble the right combination of resources, expertise, locations, and relationships necessary to meet the unique needs of each case. We have worked with many leading national plaintiffs’ law firms, including Lieff Cabraser; Sanford Heisler Sharp; Milberg; Cohen Milstein; Cooper & Kirk; Clifford Law; and Keller Rohrback. We have also worked with many leading regional and local plaintiffs’ law firms in New York, Chicago, Philadelphia, Atlanta, Minneapolis, Denver, Pittsburgh, Cincinnati, St. Louis, San Diego, and elsewhere. This approach maximizes our clients’ likelihood of success.


Sherman Marek, the principal attorney of Marek Law Office, has investigated and litigated complex commercial matters in state and federal courts for 30 years, particularly antitrust, employment, whistleblower, and class action matters. Currently, Mr. Marek represents whistleblowers in several pending False Claims Act lawsuits and investigations. Among other roles, he was previously lead counsel in a whistleblower action on behalf of the City of Chicago and State of Illinois against several Wall Street banks in connection with their home mortgage lending activities.

Mr. Marek was also lead counsel in a whistleblower action on behalf of the federal government against a nationwide healthcare supply company, which settled in 2011 for $85 million—one of the largest recoveries in history where the government did not actively litigate a action on its own behalf. He was also lead counsel for the plaintiff class in a multi-billion dollar antitrust class action against dozens of healthcare systems and medical associations seeking fair wages and safe work hours for medical residents. That case, which compelled the defendants to immediately adopt weekly work hour limits for residents, was followed widely in the national media, led to extensive collaboration with several members of Congress, and was litigated up to the United States Supreme Court.

Mr. Marek’s broad experience is reflected by the many court decisions published in his cases, including: City of Chicago and State of Illinois ex rel. Martinez v. Citigroup, Deutsche Bank, Goldman Sachs, JPMorgan Chase, Merrill Lynch and Morgan Stanley, No. 12-C-1814 (N.D. Ill. Sep. 17, 2012); U.S. Mason v. Medline, 731 F. Supp. 2d 730 (N.D. Ill. 2010); Jung v. Assoc. of American Medical Colleges, 226 F.R.D. 7 (D.D.C. 2005), Fed. Appx. 9 (D.C. Cir. 2006), 127 S. Ct. 1041 (2007); 339 F. Supp.2d 26 (D.D.C. 2004); 300 F. Supp.2d 119 (D.D.C. 2004); Salas v. Grancare, 22 P.3d 568 (Colo. App. 2001); Wallace v. HealthOne, 79 F. Supp.2d 1230 (D. Colo. 2000); Nicholas v. North Colorado Medical Center, Inc., 12 P.3d 280 (Colo. App. 1999), 27 P.3d 828 (Colo. 2001), 534 U.S. 1084 (2002); Ferbrache v. Metrolist, Inc., (D. Colo. 1998); Walsh v. McCain Foods, Ltd., 81 F.3d 722 (7th Cir. 1996); South Central Bank and Trust Co. v. Citicorp Credit Serv., Inc., 863 F. Supp. 635 (N.D. Ill. 1994); 811 F. Supp. 348 (N.D. Ill. 1992); In re Carbon Dioxide Antitrust Litigation, 155 F.R.D. 208 (M.D. Fla. 1993); 149 F.R.D. 229 (M.D. Fla. 1993); Scholes v. Stone, McGuire & Benjamin, 839 F. Supp. 1314 (N.D. Ill. 1993); 821 F. Supp. 533 (N.D. Ill. 1993); 143 F.R.D. 181 (N.D. Ill. 1992); 786 F. Supp. 1385 (N.D. Ill. 1992); Scholes v. Moore, 150 F.R.D. 133 (N.D. Ill. 1993); Mayfair Constr. Co. v. Waveland Associates, 619 N.E.2d 144 (Ill. App. 1 Dist. 1993), 624 N.E.2d 809 (Ill. 1993); and Matter of Wabash Valley Power Ass’n, Inc., 773 F. Supp. 1178 (S.D. Ind. 1991), 988 F.2d 1480 (7th Cir. 1993); 713 F. Supp. 1260 (S.D. Ind. 1989), 903 F.2d 445 (7th Cir. 1990); 72 F.3d 1305 (7th Cir. 1995), 519 U.S. 965 (1996).

Contact Us

Marek Law Office, P.C.
825 S. Waukegan Road, Ste. A8 #208
Lake Forest, Illinois 60045