John S. Mackey

John S. Mackey is a respected partner at Goodsill, where he focuses exclusively on labor and employment law. With decades of experience, he provides strategic counsel to Hawai‘i employers on a wide range of workplace issues, from compliance and terminations to litigation involving discrimination, harassment, and wage disputes.

John earned his Juris Doctor in 1992 from the University of Missouri School of Law. He also graduated in 1989 with a Bachelor of Arts in Economics from the University of Hawai‘i. His early legal training included clerking for the Honorable John C. Holstein of the Missouri Supreme Court, which laid a strong foundation for his litigation and advisory work.

John is a trusted advocate who defends employers during agency investigations and courtroom proceedings. He routinely handles cases involving harassment, disability accommodations, wage and hour laws, and breaches of employment contracts or non-compete agreements. He also guides companies through internal investigations and employee classification matters.

Beyond litigation, John plays a proactive role in preventing workplace disputes. He frequently speaks at legal seminars and provides employee training on topics like harassment prevention and labor compliance. His preventive strategies help organizations maintain a legally sound and respectful work environment.

Admitted to practice in Hawai‘i and before multiple appellate and federal courts, including the U.S. Court of Appeals for the 6th and 9th Circuits, John’s reach and insight are trusted throughout the state. Recognized in The Best Lawyers in America in 2020, he is known for his dedication to both employer advocacy and legal excellence.

John S. Mackey remains a pivotal legal resource for Hawai‘i businesses seeking clarity and defense in the dynamic field of employment law. With a practice grounded in experience and driven by results, he continues to serve as a steadfast partner to the island’s employers.

Law Office Affiliations

• Partner, Goodsill
• Member, Hawaii State Bar Association

Licensed State

Education

• University of Missouri School of Law
  Juris Doctor (JD)
• University of Hawaii
  Bachelor of Arts (BA)

Awards & Badges