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 36 - 40 of 58 reviews | Recommendation
Posted by Mark | December 12, 2019 | Hired Attorney | Employment & Labor
Top Notch!
John is the guy you want in your corner. He is fast-working, aggressive and knows how to get the job done. He quickly resolved an HR issue I was unfairly involved with and delivered the outcome I was hoping for.
Posted by anonymous | July 16, 2019 | Hired Attorney | Employment & Labor
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 | June 28, 2019 | Hired Attorney | Employment & Labor
Highly intelligent, gifted, first-rate, consummate, brilliant....
These are some of the words that come to mind when describing Jonathan Sack. You do not need to search for anyone else, and I can not stress that enough. Personally, I feel we live in a great world. Unfortunately, it is not without bad people and bad employers, but if there were no bad people or b...
Posted by anonymous | June 17, 2019 | Employment & Labor
anonymous
Jonathan was referred to me by two friends, independently and i see why. He is the epitome of helpful, responsive and efficient. Jonathan was able to guide me on an employment matter in short order, was generous with his time and expertise. After our conversations, i felt confident moving forward wit...
Posted by anonymous | May 04, 2019 | Hired Attorney | Employment & Labor
Exceptional legal advocacy
Jonathan has successfully defended my interests and provided me outstanding guidance on a number of employment matters. His 30+ years in the industry, direct approach and professional demeanor make him an excellent advocate for anyone seeking legal assistance related to employee issues. I unreservedl...
"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."
No Endorsement Data Available Yet
This attorney hasn't created any attorney endorsements recently on Avvo.
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