John Andrew O'Leary
Attorney John A. O'Leary • Worcester, MA
Dui DwiGeneral PracticeInsurancePersonal Injury
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Contact
Email
Phone
(508) 466-5968
Address
47 Harvard St, Worcester, MA, 01609-2840, US
Professional
About
Attorney John O'Leary has over 25 years of criminal and civil litigation experience in the District and Superior Courts of Massachusetts. He has worked both sides of the aisle in each area of the law -- prosecuting and defending hundreds of criminal and civil cases to verdict. He knows how the other side thinks, how they prepare, and how to optimize your chances of winning at trial. As an Assistant District Attorney and as an Assistant Attorney General, Attorney O'Leary investigated and litigated a diverse array of misdemeanors and felonies, from street crimes and gang activities to complex white-collar fraud cases. In private practice, he has defended multinational insurance companies and insureds in defeating exaggerated and non-existent bodily injury claims, as well as fraudulent theft and property damage claims. As a private practitioner of law, Attorney O'Leary is able to apply his decades of experience in courtrooms throughout the state to helping individuals achieve the best possible outcome for their litigation.
About Dui Dwi Law
DUI/DWI attorneys defend individuals charged with drunk or impaired driving. They protect clients' rights and work to minimize consequences. Common matters include dui defense, dwi defense, license suspension, ignition interlock.
Credentials
Education
1994 New England School of Law JD - Juris Doctor 1991 College of the Holy Cross BA - Bachelor of Arts 1987 Doherty Memorial High School Diploma
Recognition & Involvement
Awards
2008 Spotlight Award, DA Joseph D. Early, Jr. 2001 AG Shannon Award for Excellence, AG Thomas Reilly
Associations
2002 - Present U.S. District Court for the District of Massachusetts 1994 - Present Massachusetts Bar Association Worcester County Bar Association
Speaking
2021 Worcester County Bar Association Witness Representation Under the 5th Amendment 2021 Worcester County Bar Association handling OUI Cases 2020 Massachusetts Bar Association Litigating in the Age of COVID 2020 Massachusetts Bar Association 58A Detention Hearings 2020 Massachusetts Bar Association Litigating OUIs
Other Dui Dwi Attorneys in Worcester, MA
Updated: Jun 07, 2026