Mary E. Dennison, Cleveland Labor & Employment Attorney

Mary E. Dennison


200 Public Square
Suite 2800
Cleveland, Ohio 44114

Primary Practices

Mary E. Dennison works closely with business owners, individuals and organizations as a member of Hahn Loeser’s Labor & Employment practice area in the Firm’s Cleveland office. Mary guides clients through a variety of legal issues, including employment agreements, confidentiality agreements, Worker’s Compensation, business formation and business operating agreements.

Mary also has professional problem-solving experience in commercial litigation, appellate advocacy, warranty law, product liability and personal injury law. While completing her law degree, Mary served as a judicial extern to Justice R. Patrick DeWine of the Supreme Court of Ohio.


  • Capital University Law School, J.D., cum laude, 2020
    • Honors & Activities: Order of the Barristers; Top four Best Briefs at ABA National Appellate Advocacy Moot Court Competition; CALI Award for Excellence in Appellate Advocacy; Dean’s List
  • Wheeling Jesuit University, B.A., English, 2017
    • Honors & Activities: Sigma Tau Delta English National Honor Society, Secretary and Treasurer; Dean’s List; Student Athlete Advisory Committee; NCAA Division II lacrosse player, three-year captain
Community Involvement

St. Columbkille Parish, Lector

Awards & Distinctions

Rising Star, Ohio Super Lawyers, 2024

Bar Admissions

State of Ohio, 2020


State of Pennsylvania, 2022


U.S. District Court for the Northern District of Ohio


U.S. District Court for the Southern District of Ohio


U.S. Court of Appeals for the Sixth Circuit


Memberships & Affiliations

Cleveland Metropolitan Bar Association, Member


Ohio State Bar Association, Member


Pennsylvania Bar Association, Member