Samuel Block is an associate in Mayer Brown's Chicago office and a member of the Litigation & Dispute Resolution practice. His practice includes a substantial amount of litigation arising under the Employee Retirement Income Security Act of 1974 (ERISA). He has represented benefit plans, plan sponsors, and ERISA fiduciaries in disputes involving excessive fees, investment strategy, denial of disability benefits, and other types of ERISA claims. 

Sam’s practice also includes a significant amount of employment litigation, white collar criminal defense, and pro bono work. This work has involved defending Fortune 500 companies in wage and hour disputes, advising clients on compliance with state, local, and federal employment laws, and representing Plaintiffs in a trade secret claim. His work has also entailed assisting in internal investigations on behalf of corporate clients in Foreign Corrupt Practices Act (FCPA) and False Claims Act (FCA) violations. Sam has briefed and argued an immigration case in front of the Seventh Circuit, winning a remand for his client. He has also successfully defended a school at trial in a contract dispute.

He previously worked for the City of Chicago in the Mayor's Office Fellowship Program. During law school, Sam served on Harvard Law School's Board of Student Advisers and was a finalist for the 2015 Ames Moot Court Competition.


  • Griffin v. AT&T Umbrella Benefit Plan No. 3, Case No. 1:18-cv-01804-WCG. Granting motion for summary judgment in an ERISA benefits lawsuit alleging that the AT&T plan improperly denied the plaintiff’s claims for short-term and long-term disability benefits.
  • LSC Development, LLC v. Osborne, No. 18-cv-5909. Denying motion to dismiss all nine counts of complaint against former employees and the new company they covertly formed in order to compete with plaintiff.
  • Arrazabal v. Barr, 929 F.3d 451 (7th Cir.). Vacating Board of Immigration Appeals denial of withholding of removal and Convention Against Torture claims. 
  • O’Risky v. Mead Johnson Nutrition Co., 2017 WL 3421552 (N.D. Ill.). Granting motion to dismiss common law claim for retaliatory discharge.
  • Part of team that achieved pre-trial settlement on behalf of defense contractor in ERISA class action alleging more than a billion dollars in damages.
  • Defending multiple universities in separate putative ERISA class actions regarding the administration of retirement plans offered to faculty and staff.
  • Representing a global communication company against multi-pronged challenge to the administration of its retirement plan and its disclosure obligations.


Northwestern University, BS, summa cum laude

Harvard Law School, JD, cum laude


  • Illinois


  • US Court of Appeals for the Seventh Circuit
  • US District Court for the Northern District of Illinois
  • US District Court for the Eastern District of Michigan
  • US District Court for the Eastern District of Wisconsin