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 6 - 10 of 25 reviews | Contracts & Agreements
Posted by Shelia | January 20, 2023 | Contracts & Agreements
Top-Notch Lawyer All the Way!
Jonathan Sack was referred to me and my husband by a previous client of his. He came very highly recommended and I can definitely see why. He reviewed a document we requested his feedback on and provided clear, concise advice on how it should be responded to. The consultation was easy going and fr...
Posted by anonymous | March 21, 2022 | Contracts & Agreements
Partner
I was referred to Jonathan by a friend, and within 30 minutes we'd connected and planned next steps. He was incredibly knowledgeable and generous. He didn't charge me for my consultation and quickly answered my questions and concerns about a new employment agreement. He's an excellent resource for wo...
Posted by anonymous | March 14, 2022 | Hired Attorney | Contracts & Agreements
Helped me out when I really needed it
I was suddenly let go from my job under shady circumstances, and I was so scared of my company that I wanted someone to make sure that it was actually in my best interest to sign their release and accept their severance. I called several attorneys and they all wanted hundreds of dollars to read m...
Posted by anonymous | September 20, 2021 | Hired Attorney | Contracts & Agreements
Consistently helpful and very practical
Jonathan helped me last year when I was leaving a job of long standing. He gave practical advice that helped me improve the agreement, and was consistently supportive and available. His charges are very fair. Even better, he's helped me with some further questions, over a year later. I would go back ...
Posted by anonymous | June 21, 2021 | Contracts & Agreements
Anonymous
I consulted with Jonathan in connection with a separation. He was very responsive and gave me advice that resulted in a severance package that was 33% more lucrative than I was expecting. He has good judgment, combined with lots of common sense and strong negotiating skills. Highly recommend him.
"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