Joseph P. Calandrelli

781.359.9034 | 781.359.9001 |

Mr. Calandrelli joined O’Connor, Carnathan & Mack in May 2014.

Mr. Calandrelli is a trial lawyer with extensive experience in state and federal courts throughout New England. Mr. Calandrelli’s practice includes all areas of civil litigation, with a particular focus on handling construction cases, real estate matters, employment issues, shareholder disputes, and other complex commercial matters. He also routinely handles all types of tort-related cases, including personal injury, tortious interference, and slander/defamation claims. Although well-versed in the litigation process, Joseph also routinely advises clients on risk assessment issues with the goal of developing a plan to keep his clients out of the courtroom where possible. Where litigation is necessary, Mr. Calandrelli strives at the outset of each case to develop a uniquely tailored litigation strategy that is aimed at obtaining the most advantageous result in a timely and efficient manner.

Some of Mr. Calandrelli’s recent accomplishments include:

  • Successfully defended software developer in $5 million case brought by individual claiming developer engaged in unlawful marketing of its product to third parties who used software for criminal purpose. Case was dismissed at summary judgment with decision affirmed on appeal.
  • Successfully defended through trial controlling member of medical device company against breach of fiduciary duty claims brought by minority member.
  • Obtained numerous favorable resolutions for general contractors and subcontractors in payment and performance–related issues.
  • Obtained favorable settlement for real estate broker in dispute with former client concerning commission payments.
  • Secured prompt dismissal of claims brought against law firm under RICO and other related federal statutes.
  • Obtained favorable settlement for former officer of closely-held company for its failure to timely pay wages.

Work Experience

O’Connor, Carnathan and Mack, LLC Partner
Kenney & Sams, P.C. Associate
Prince Lobel Tye, LLP Associate
Superior Court of Massachusetts Judicial Intern

Honors and Awards

  • Voted Massachusetts “Rising Star” attorney
    • 2013 to date


  • Northeastern University School of Law, J.D.
  • Dartmouth College

Bar Admission

  • Massachusetts