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 1 - 4 of 4 reviews | Arbitration
Posted by anonymous | February 02, 2022 | Hired Attorney | Arbitration
Someone who truly puts his client first
I reached out to Jonathan to help me arbitrate a case against my former employer. From day one Jonathan explained the process and steps involved. I was always consulted and my opinion was taken into account. He diligently prepared the case and fought it. His team was outstanding, taking down a powerf...
Posted by Jillian | May 26, 2021 | Hired Attorney | Arbitration
Highly effective in Employment & Labor law.
Jonathan is without doubt the best lawyer for employment & labor, arbitration and litigation. I hired Jonathan for an employment dispute. I have no hesitation in recommending him. He is incredibly effective, knowledgeable and helped to get the best outcome in my case.
Posted by Claudio | April 06, 2018 | Hired Attorney | Arbitration
"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...
Posted by anonymous | November 13, 2017 | Hired Attorney | Arbitration
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