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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.
Free Consultation
$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
31 Client Reviews
Showing 21 - 25 of 31 reviews
Posted by Mitch | August 14, 2025 | Hired Attorney
Great Experience
Jason did a great job. He was a great communicator, understanding, and worked out a wonderful deal to make the process quick and easy. Would highly recommend!
Posted by Connor | August 07, 2025 | Hired Attorney
Grosky is the best you can get. Seriously.
I hired Attorney Grosky to represent me on two Misdemeanor A theft charges in Salem District Court, and he exceeded my expectations in every way. Jason's communication was exceptional - always responsive, clear, and thorough. He explained my options and potential consequences in terms I could unders...
Posted by Nick | July 11, 2025 | Hired Attorney
Great Lawyer
I had the pleasure of working with Jason Grosky, and I couldn't be more impressed with the level of service I received. From the start, he was incredibly accessible and always available to answer any questions I had. His efficiency in handling my case was remarkable—everything moved along smoothly, a...
Posted by Mark | June 12, 2025
Jason Grosky will Litteraly fight for your best outcome!
Let's start with the main point and that is flat out Jason Grosky is the best attorney I've ever met or had. I had a court date on April 16 of 2025. I had a schedule 1 possession charge hanging over my head. When I walked in to court on that morning I had no lawyer and no idea how much trouble I was...
Posted by Jamie | May 30, 2025 | Hired Attorney
Best Experience
Jason took great care of my elderly dad. His communication was clear and understandable and he went above and beyond to see his case through, closing it out successfully and faster than we anticipated. As with any issue involving an attorney, the experience can be stressful and scary, but Jason const...
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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