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 51 - 55 of 67 reviews | Practice Area Knowledge
Posted by anonymous | May 04, 2019 | Hired Attorney | Employment & Labor
Exceptional legal advocacy
Jonathan has successfully defended my interests and provided me outstanding guidance on a number of employment matters. His 30+ years in the industry, direct approach and professional demeanor make him an excellent advocate for anyone seeking legal assistance related to employee issues. I unreservedl...
Posted by Piotr | March 26, 2019 | Hired Attorney | Employment & Labor
Fast and efficient
Jonathan helped me settle with my previous employer. He was fast, direct and efficient. From what I saw his experience in my field of work allowed him to settle my case as smoothly as possible. His compensation structure was also something that helped me to go into the negotiation process. I have al...
Posted by anonymous | March 01, 2019 | Hired Attorney | Employment & Labor
Amazing experience with Jon - Highly Recommend. He will fight for you!
I can't understate how appreciative I am with Jon and his team for his help in my case. I hired Jon to represent me against my long term employer. With Jon's help i was able to win a settlement far beyond what the company offered me and what i could have achieved fighting them on my own. It was also...
Posted by anonymous | February 12, 2019 | Hired Attorney | Employment & Labor
Recommendation
GoldenTree Asset Management LP has retained Sack & Sack and, in particular, its lead attorney, Jonathan Sack, on a variety of complex employment related matters and litigations for over a decade. The advice and services received from Jonathan have always been very insightful, thoughtful, pragmati...
Posted by anonymous | January 30, 2019 | Hired Attorney | Discrimination
Great Lawyer
Jonathan and his Firm provided excellent services, demonstrated professionalism, expertise, and personal attention to the details while handling discriminatory case for me. Jonathan was helpful, technical, and responsive to all my questions and concerns. Thank you once again on doing a great job! I ...
"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