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 9 reviews | Cost of Services
Posted by anonymous | July 24, 2022 | Hired Attorney | Employment & Labor
The right man for the job
I had a bonus dispute with my financial services employer and reached out to a number of attorneys to assess my options. Nearly every one of them told me the same thing - that Wall Street bonuses are purely discretionary and that I had little to no recourse. They told me that going up against a well-...
Posted by anonymous | March 14, 2022 | Hired Attorney | Employment & Labor
Helped me out when I really needed it
I was suddenly let go from my job under shady circumstances, and I was so scared of my company that I wanted someone to make sure that it was actually in my best interest to sign their release and accept their severance. I called several attorneys and they all wanted hundreds of dollars to read m...
Posted by anonymous | December 15, 2020 | Hired Attorney | Business
President
Jonathan has been a tremendous help in navigating the legalities of my startup business. His no nonsense approach was instrumental in achieving the necessary contractual framework for my business. Jonathan is extremely efficient and helped achieve these goals while keeping billable hours to a minim...
Posted by anonymous | January 24, 2020 | Hired Attorney | Employment & Labor
Breastfeeding/maternity discrimination case
I contacted Jonathan the day after (and the day before Xmas eve) I got fired from my job in finance about 6 weeks after I returned from my maternity leave. I was berated when I told my employer I was pregnant. Was asked why I didn't tell them when they had interviewed me. My bosses first response...
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