John K. Diviney
Partner
John K. Diviney
Partner
John enjoys helping companies effectively manage employee-union relationships, fostering improved operations and better business outcomes. Having held significant leadership positions on several boards, John understands decision-making and leadership issues for businesses and executives, which informs his practice.
Contact
Email: [email protected]
Phone: (516) 357-3234
Fax: (516) 357-3333
926 RXR Plaza
Uniondale, NY, 11556
Practice Groups
Bar Admission
New York
John K. Diviney represents clients in labor arbitrations and grievances; unfair labor practice charges; employment discrimination, harassment, and retaliation claims; wrongful competition and restrictive covenant disputes; and wage and hour collective and class actions.
A partner in Rivkin Radler’s Labor & Employment Practice Group, John regularly appears before federal and state regulatory agencies, including the National Labor Relations Board (NLRB), the Equal Employment Opportunity Commission (EEOC), state and federal labor departments, and various fair employment practices agencies.
John also has acted as the lead negotiator for collective bargaining with major unions across the country. He has handled negotiations in the transportation, defense, manufacturing and service industries, in addition to the public sector, as well as handling contract grievances and arbitrations.
John regularly counsels clients on regulatory compliance under state and federal statutes, including the Family and Medical Leave Act (FMLA) and the Americans with Disabilities Act (ADA), wage and hour issues, and the review of layoffs, discipline, and termination decisions.
Bar Affiliations
Suffolk County Bar Association
Education
St. John’s University School of Law, J.D.
Cornell University School of Industrial and Labor Relations, B.A.
News & Publications
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Over 25 Percent of Rivkin Radler Attorneys Recognized by Best Lawyers in America®
August 21 | 2025 -
38 Rivkin Radler Attorneys Included in The Best Lawyers in America®
August 15 | 2024 -
NY Amends Home Care Worker Minimum Wage
May 19 | 2023
View All Publications
Webinars
- New Employment Laws and Regulations Regarding Marijuana in the Workplace
November 6 | 2022
Currently, John serves on the board of directors at John T. Mather Hospital, and, for over 10 years, he has been a member of the Three Village Central School District Board of Education, serving as its president, vice president, and chairperson of its audit committee.
He has served as the co-chair of the Labor and Employment Law Committee of the Suffolk County Bar Association and is a former officer of the Suffolk Academy of Law.
John has been named to Best Lawyers in America® for Litigation-Labor and Employment (2022-2026); Employment Law-Management (2026); Labor Law-Management (2026). He has also been featured in the “Who’s Who in Labor Law” section in Long Island Business News.
