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A career prosecutor now fighting for you.
Representing clients before courts in Massachusetts and New Hampshire.
Jason B. Grosky, Esq. spent almost two decades as a courtroom prosecutor both in Massachusetts and New Hampshire. Each day, he's worked alongside police officers, assisting them on their cases, helping direct their investigations. He understands how a case is built from day one, the work of a detective, how officers think, their methods. He’s argued thousands of cases in front of judges and juries and earned a reputation as a hard-charging courtroom litigator. He's a fighter.
Now, he wants to fight for you.
If you’ve had an interaction with law enforcement and need legal counsel, give Attorney Grosky a call. The Grosky Law Firm focuses on criminal defense, impaired driving (DUI/OUI/DWI), motor vehicle infractions and administrative hearings, personal injury, juvenile law, divorce, family law and domestic relations including restraining orders stalking orders of protection and New Hampshire municipal law.
Proven experience.
Proven results.
Now on your side.
Fighting for you.
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$0 first 30 minutes
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Chat withState: New Hampshire
Acquired: 2009
No misconduct found
State: Massachusetts
Acquired: 2006
No misconduct found
105 Kenoza Ave, Haverhill, MA, 01830
28 Client Reviews
Showing 1 - 4 of 4 reviews | Lawsuits & Disputes
Posted by Austin | August 26, 2025 | Hired Attorney | Lawsuits & Disputes
Great guy, Great attorney!
Before meeting Jason Grosky I was an anxious mess. I got myself in a mess that I had no idea what to do. After just one consultation with Jason not only was my anxiety gone but I had a good idea of what was going to happen with my case. He explained everything to me in an easy manner and did not c...
Posted by anonymous | May 19, 2025 | Hired Attorney | Lawsuits & Disputes
Simply the best!
Jason’s professionalism, expertise, and genuine care for his clients are truly unmatched. He assisted me with a personal matter and resolved the issue promptly and effectively. Throughout a challenging time marked by personal trauma, Jason made my safety his priority. He was always available to answe...
Posted by BM | April 16, 2025 | Hired Attorney | Lawsuits & Disputes
Highly Recommend
Jason was an incredible lawyer and resource during a difficult time. I knew I was in good hands from the moment we met. He helped walk through my situation and options in a clear and concise manner, and fought for what was best for me and my situation. He was extremely knowledgeable, professional, an...
Posted by Chris | April 13, 2025 | Hired Attorney | Lawsuits & Disputes
Attorney review
Attorney Grosky handled my case professionally and got me the results I was hoping for. He stayed in contact with me throughout the process, answering all questions I had relating to my case in a timely fashion. I would absolutely recommend him to anyone who needs counsel.
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2025 - Present
Principal, Grosky Law Firm
2009 - 2025
Prosecuting Attorney, Salem (NH) Police Department
2007 - 2009
Assistant District Attorney, Essex County District Attorneys Office
2006
JD - Juris Doctorate