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 - 5 of 13 reviews | Discrimination
Posted by anonymous | March 22, 2026 | Hired Attorney | Discrimination
Highly recommend: Effective and Highly Efficient
My lawyer was effective and highly efficient throughout the process. One of my biggest fears was having to regularly see the abuser and even a more hostile environment while the case was handled. Prior to Mr Sack’s involvement, individual regularly aggressively screamed at me and intimidated me (6’...
Posted by anonymous | September 14, 2022 | Hired Attorney | Discrimination
Professional and genuine
I sought Jonathan's representation when my employer let me go after years of discrimination. He was professional, persistent, and genuinely cared about my situation. He quickly negotiated a severance package more than four times what was initially offered to me. I would certainly recommend him.
Posted by anonymous | August 23, 2021 | Discrimination
The best
Jonathan helped me every step of the way to negotiate a separation agreement with my former employee. The issues at hand were gender discrimination and sexual harassment and I'm so thankful for his counsel.
Posted by Lena | April 16, 2021 | Hired Attorney | Discrimination
Client
I am a woman in the financial industry with decades of experience, a stellar reputation who was wrongfully terminated. I hired my lawyer, Jonathan Sack, to represent me in a mediation with this employer and it is my pleasure to write this review. Jonathan Sack and his team's ability to combat a for...
Posted by anonymous | June 21, 2020 | Hired Attorney | Discrimination
Managing Director
If you need an employment lawyer Jonathan is the ONLY lawyer to call. He is the perfect balance of absolutely straight forward, fights like heck for you and he truly cares. I would recommend him to anyone with a discrimination or employment case. Calling him was the smartest thing I did when I felt 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