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 61 - 65 of 67 reviews | Practice Area Knowledge
Posted by Randi | December 06, 2017 | Hired Attorney | Employment & Labor
AMAZING LAWYER--One of a kind--Brilliant & Effective--WINNER
I'm pleased to recommend Jonathan Sack with the highest ratings and know that he will exceed your expectations. Jonathan represented me for an employment issue. My settlement was much larger than anticipated (nearly triple). He made it easy for me and handled everything in a turnkey fashion. The q...
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...
Posted by anonymous | November 02, 2017 | Hired Attorney | Employment & Labor
Smart, to the point, gets it done.
Jonathan was able to cut through a nuanced employment dispute to quickly get to the essence. He was aggressive, yet fair-minded, reasonable, and restrained when leading the negotiation. Before choosing Sack & Sack, I interviewed a number of high-profile attorneys and heard out their proposed stra...
Posted by Liz | October 19, 2017 | Hired Attorney | Discrimination
Amazing Advocate to have on your side
Jonathan is extremely knowledgeable, fierce, straight forward, and compassionate. He is definitely the advocate you need when you are being discriminated by your employer. Jonathan made sure the timing was right before pulling the trigger on my case. He made sure I was emotionally and financially ...
"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