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 16 - 20 of 25 reviews | Contracts & Agreements
Posted by anonymous | April 15, 2020 | Contracts & Agreements
Director
Jonathan Sack has been on my side protecting my interest and my family's interest throughout my wall street career for the last 25+ years. In numerous occasions Jonathan has constantly delivered for me on improved employment offers, higher employment severance packages and shorter non compete negoti...
Posted by anonymous | December 16, 2019 | Hired Attorney | Contracts & Agreements
Highly Recommended
Jonathan Sack helped negotiate a non-compete. He worked tirelessly, was easy to get in touch with, and helped diligently throughout the process. Highly recommended.
Posted by Rory | October 16, 2019 | Hired Attorney | Contracts & Agreements
Incredible!
Came to John with an employment contract that should’ve been used to wrap fish or start a fire. My employer had a permanent seat on the 9th ring of Dante’s hell . Jon and his team were outstanding. Always optimistic , supportive and very clear in managing my expectations. Made you feel like family . ...
Posted by anonymous | July 16, 2019 | Hired Attorney | Contracts & Agreements
Outstanding Employment Attorney
I highly recommend you hire Jonathan Sack to handle any challenging legal issues you may face in the workplace. I sought Jonathan’s help on a severance agreement with a former employer following a traumatizing experience at work. Johnathan negotiated with the employer using the utmost discretion to o...
Posted by anonymous | July 11, 2019 | Hired Attorney | Contracts & Agreements
Senior Level Ecommerce Executive
Jonathan extricated me from a burdensome non-compete that my former employer was standing firm to hold me to. I am a single parent with two children in college, this situation was threatening my ability to support my family, not only did Jonathan not charge me a fee, he managed to negotiate a GREATLY...
"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