Mackenzie A. Queenin

Associate vCard


  • Boston College (JD)
  • Providence College (BA, magna cum laude)

Bar Admissions

  • Massachusetts
  • Rhode Island

Mackenzie represents clients in all aspects of litigation, with a special focus on internal investigations, state and federal government investigations and white collar defense.  She represents corporations, CEOs, directors, officers, and other individuals in all phases of investigations, regulatory enforcement proceedings, criminal prosecutions, and civil matters.

Before joining Mintz Levin, Mackenzie was a litigation associate in the Boston office of another international law firm.  During law school, she was an assistant district attorney with the Middlesex County District Attorney’s Office Criminal Prosecution Clinic and an intern with the Honorable Judge Selya at the U.S. Court of Appeals for the First Circuit.  Mackenzie also served as an Executive Articles editor on the Environmental Affairs Law Review.

Representative Matters

  • Conducted over a dozen employee interviews in conjunction with an internal investigation for publicly traded company and advised general counsel on breadth of exposure
  • Conducted internal investigation for alcohol distributor concerning illegal pay-to-play practices
  • Represented the board of directors of a Massachusetts non-profit in an investigation by the Attorney General
  • Represented a former employee of a public  company in parallel investigations by the SEC and USAO regarding violations of securities laws
  • Defended corporations, non-profits, and educational institutions against employee discrimination charges filed with the MCAD and EEOC
  • Represented executives of specialized insurance company before federal grand jury in a Hobbs Act investigation
  • Part of trial team in an insurance coverage and bad faith/extra-contractual liability lawsuit
  • Obtained consent decree in a 18 USC 1983 civil rights action against the city of Brockton, Massachusetts and top officials in order to enjoin obstructive acts by city officials to block a state-approved power plant
  • Drafted employer handbook for foreign corporation opening first location in Massachusetts