I am a results-oriented, energetic advocate for my clients. I am passionate about representing my clients. As most cases come from word-of-mouth referrals, I am proud of my reputation built one client at a time. Most clients are faced with a difficult challenge in a critical part of their lives: their jobs and careers. I am competitive and look forward to taking the fight to the employer to redress unfair and illegal actions. I align our firm's fee arrangement with the client's desired outcome so that there is an identity of interest in the result sought. My success is defined by each client obtaining the desired outcome as a consequence of my effective counsel. Most of all, I love what I do, and that is helping people and seeking fair results for clients who deserve better treatment from their employers.
5
Practice Areas
37 years | 5,000 cases
37 years | 200 cases
37 years | 400 cases
37 years | 500 cases
33%-40%
State: New Jersey
Acquired: 1989
No misconduct found
State: New York
Acquired: 1989
No misconduct found
State: District of Columbia
Acquired: 1991
No misconduct found
177 Client Reviews
Showing 16 - 20 of 20 reviews | Communication Style
Posted by Trevyn | January 21, 2020 | Lawsuits & Disputes
Incredible Support
Although i was located in a country with 7 hour time difference, and contacted Jonathan just before Christmas, he was extraordinarily efficient and available to me at all times. Even through the holidays, whilst he travelled with his family, we spoke and mailed regularly. His ability to combine empa...
Posted by anonymous | April 24, 2019 | Hired Attorney | Employment & Labor
Exceptional Employment Lawyer
Its never a pleasant situation if you need an employment lawyer but if you need one, Jonathan is your man. I have worked with him in two instances. He is very realistic and upfront about a case, which makes the process very efficient and once he is on-board with your case, he is the ferocious advocat...
Posted by anonymous | December 20, 2018 | Hired Attorney | Discrimination
Jonathan Sack delivers !
I engaged Jonathan and his team to assist with an age and gender discrimination situation at my former firm. Jonathan was responsive and supportive. He was with me every step of the way, and were ultimately vindicated. Jonathan is a straight shooter. He brings decades of experience to the table. ...
Posted by anonymous | December 05, 2017 | Employment & Labor
Strong and knows the Law
Johnathan knows workers rights and explained everything to me so I understood what was happening and what my options where. I would recommend speaking to him.
Posted by anonymous | November 13, 2017 | Hired Attorney | Employment & Labor
Anonymous
Jonathan was direct and thorough during the whole process of filing and arbitration. He was available to discuss concerns and issues whenever I needed him. He put my mind at ease and explained clearly what would be happening. Jonathan and Michael Mui did an excellent job in representing me and making...
"Jonathan is one of the most professional, effective, and direct attorneys I have ever met. His knowledge of labor and employment law is vast and very respected. You can't go wrong having him on your team."
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2025
Super Lawyer, Super Lawyers
2024
Super Lawyer, Super Lawyers
2024
Client's Choice, Avvo
2023
Super Lawyer, Super Lawyers
2017
Super Lawyer, Super Lawyers
1986
Dewey Scholarship, Dewey Scholarship
1989 - Present
Partner, Sack & Sack, LLP
1989 - Present
New York State Bar Association
1989
JD - Juris Doctor
1986
BA - Bachelor of Arts
English