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 10 reviews | Staff & Support
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 Randi | December 06, 2017 | Hired Attorney | Employment & Labor
AMAZING LAWYER--One of a kind--Brilliant & Effective--WINNER
I'm pleased to recommend Jonathan Sack with the highest ratings and know that he will exceed your expectations. Jonathan represented me for an employment issue. My settlement was much larger than anticipated (nearly triple). He made it easy for me and handled everything in a turnkey fashion. The q...
Posted by anonymous | April 11, 2024 | Hired Attorney | Lawsuits & Disputes
One of the WORST in the business
The other one star reviews are 100% accurate. He is a vile human being and is fake nice at first only to turn on you once he thinks your case isn’t worth millions. He pawns you off on junior staffers who are just as incompetent. He expects clients to write their own complaints! I’m not a lawyer! Mess...
Posted by anonymous | January 07, 2021 | Hired Attorney | Lawsuits & Disputes
Bad lawyer, Worse results
You get what you pay for. And in this case, I got zero. Too bad I had to write the entire draft complaint myself with no help from Jonathan’s staff.
Posted by anonymous | August 22, 2017 | Hired Attorney | Lawsuits & Disputes
Doesn't deliver
Sack is a big talker but ultimately doesn't deliver. He took a case on contingency then let it languish for over a year with no progress. When I pushed to move it forward he demanded a retainer as a condition completely disregarding the original agreement. Though his website states he handles matters...
"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