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 91 - 95 of 177 reviews
Posted by anonymous | June 08, 2020 | Hired Attorney | Employment & Labor
Tough as nails
Jonathan is a no nonsense, aggressive attorney. He will tell it to you straight even if it’s not what you want to hear but it’s the reality and he knows from years of experience. Jonathan’s tone can be abrupt and to the point, there is no mincing words with him, but you can rest assured, it’s this sa...
Posted by anonymous | June 03, 2020 | Employment & Labor
Account Manager
I consulted Jonathan Sack about a severance letter I received from my employer, which recently reduced staff. I did not know IF I had a case to negotiate more severance benefits but Jonathan guided me to ask the right questions. Turns out I did not have a case other good performance reviews, which ...
Posted by anonymous | May 07, 2020 | Employment & Labor
Managing Director
Jonathan is an outstanding lawyer. He really cared about my situation, spent a lot of time assisting me in negotiating my severance package and is super responsive. I will be using him going forward through the rest of my career.
Posted by anonymous | April 15, 2020 | Employment & Labor
Director
Jonathan Sack has been on my side protecting my interest and my family's interest throughout my wall street career for the last 25+ years. In numerous occasions Jonathan has constantly delivered for me on improved employment offers, higher employment severance packages and shorter non compete negoti...
Posted by anonymous | April 15, 2020 | Hired Attorney
Family Office
Jonathan is an very intelligent and attentive attorney. He will fight for you until everything is made right. After years I still have issues that arise from my matter and he continues to address them in a timely manner. I have recommended him to fellow colleagues and will continue to recommend h...
"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