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 136 - 140 of 177 reviews
Posted by David | July 23, 2018 | Hired Attorney | Wrongful Termination
Provided Help During a Difficult Exit
Jonathan was recommended to me by a friend when an exit from my employer ended up not going as smoothly as hoped. Jonathan got on the phone with me within hours (on his vacation) and provided consultation. I hired Jonathan, and he was very responsive and helpful. Though we were unable to get as much ...
Posted by anonymous | July 06, 2018 | Hired Attorney | Employment & Labor
Successful discrimination claim against large financial services firm
Represented me against my former employer (a large bank) in a retaliation and discrimination claim. Quietly resolved the matter by negotiating a very generous severance package representing multiple years of my annual compensation. Very knowledgeable and capable attorney. Developed and executed a re...
Posted by anonymous | May 22, 2018 | Hired Attorney | Employment & Labor
Provided a boost to my confidence at a trying time in my career
Jonathan was recommended to me in the midst of a crisis in my career and provided me with the confident coaching I needed to effectively negotiate a generous exit package with my employer. While he was eager to negotiate on my behalf, he respected my desire to first attempt negotiating on my own wit...
Posted by Heather | May 12, 2018 | Divorce & Separation
Very constructive, focused and helpful consultation
In 10 minutes, Jonathan was able to answer legal questions that had been nagging me for weeks about terms of my separation agreement. He understands the legal and human aspects of employment law and is very practical about nuances in agreements. If I had a bigger issue, I would absolutely go back t...
Posted by Claudio | April 06, 2018 | Hired Attorney | Lawsuits & Disputes
"Who you gonna call?"
I have been in finance for over 35 years and this was my first dispute/litigation/arbitration. Jonathan was about as professional as I have seen anyone. He asked the right questions, designed a clear, effective game plan and then executed very well. He becomes emotionally vested in his cases and 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