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 34 reviews | Responsiveness
Posted by anonymous | March 19, 2025
Incredibly User Friendly
Jonathan is truly one of the best. When I reached out to him for advice not only did he take the call quickly, but he did also so in a way that was thoughtful and comprehensive. He helped my partner and me think through the specifics of the situation and laid out what he believed to be the best pat...
Posted by anonymous | June 19, 2024 | Employment & Labor
Insightful Advice, and Very Prompt
I asked Jonathan to review my employment agreement. I sent it to him on a Sunday, and he gave an answer in 30 minutes. In our follow up discussion at 9 PM (!) two days later, Jonathan was very thorough. He pointed out a number of flaws in the agreement. Ultimately, he put my mind at ease on the matte...
Posted by anonymous | January 31, 2024 | Employment & Labor
RECOMMEND!!
Jonathan came to me through a referral and I am so thankful for it. He is responsive, knowledgeable and works to protect those being taken advantage of by large corporate firms. He provided me guidance and sound advice through an intimidating and hostile departure.
Posted by Steven | August 18, 2023 | Employment & Labor
Excellent counsel
Jonathan is excellent. He is incredibly knowledgeable, experienced, responsive, and tenacious. He is the only counsel I would consider recommending for employment related matters.
Posted by anonymous | May 10, 2023 | Lawsuits & Disputes
Thank you Jonathan!
This might be the first review/rating I have ever left for anything, and Jonathan is well deserved for my first review. I cannot thank him enough for his support. He was so responsive and very quick to reply to all my questions. Even after we decided to not move forward with building a case he was st...
"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