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 Employment and Labor 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.

John has been featured in the Who’s Who in Labor Law section in Long Island Business News. 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.

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.

John has been named to Best Lawyers in America^® for Litigation-Labor and Employment from 2022-2025.