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 171 - 175 of 177 reviews
Posted by anonymous | March 17, 2021 | Hired Attorney
Horrible
The more I dealt with Jonathan I realized he probably didn't even have a file for my case and he was totally I neffective. His legal advice changed vs what he had previously told me. His personality is aggressive. Seek other lawyers who will represent your interest and care.
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 | December 10, 2020
Big talker with no FOLLOWUP
Jonathan loves to talk but didn’t ever learn how to listen, shouting rapid fire questions like some big shot making me feel so little. I only heard from him one time and then passed down to his young henchmen. I think the reviews on this website are probably FAKE and written by Jonathan! There is no ...
The same person who cannot imagine why they were fired for legitimate business reasons now finds rejection difficult to fathom. We are duty bound to decline representation of baseless claims. We simply cannot take on matters and pursue cases where there is no merit in either the facts or the law applicable to one's circumstance.
Posted by anonymous | September 14, 2020
Very disappointing conversation
Mr Sack had no interest in my case. He just talked about himself the entire (very short) conversation. Comes off as very arrogant but not very smart - seems like a lot of big talk and little action. Had to reschedule repeatedly too!
I have a paramount interest in all calls to my office. I consider each inquiry as it is my first, last and only call. This caller had no case. I declined to pursue this person's matter. Nonetheless, I offered guidance and suggestions. During an initial, no cost consultation, I always make point to introduce myself and describe my background and experience. If one cares to follow-up, I am always willing to listen to new facts and circumstances which may change my initial opinion.
Posted by anonymous | December 12, 2017 | Hired Attorney | Lawsuits & Disputes
AVOID!!!!!! TOTAL HACK!
I wish that I could give him ZERO stars. All bark and no bite. Total unprofessional, would cancel appointments while I was on the subway on my way to his office. He pawns you off on junior lawyers in the office as he's too busy vacationing around the world. Does not stick to deadlines and makes y...
"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