Free Consultation
$0 first 30 minutes
Jason B Grosky
About Jason
Biography
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.
Practice Areas
Fees and Rates
Cost
Payment Methods
- Cash
- Check
- Credit Card
Looking for an attorney? Avvo can help.
Search our directory
Quickly connect with top attorneys through our legal directory to get help with your legal issue.
Avvo's live chat agents can help coordinate a consultation with a local attorney.
Chat with a live agent who can match you with the right attorney for your legal needs.
Chat withLicenses
Licensed in New Hampshire for 16 years
State: New Hampshire
Acquired: 2009
No misconduct found
Licensed in Massachusetts for 19 years
State: Massachusetts
Acquired: 2006
No misconduct found
Location
Grosky Law Firm
105 Kenoza Ave, Haverhill, MA, 01830
Ad
Transform legal challenges into solutions.
Connect now to review your situation.
Jason B Grosky's Reviews
Avvo Review Score
27 Client Reviews
Filter Avvo Reviews (27)
Refine reviews to match your needs. Use the filters to quickly surface reviews that align with your case or priorities.
Practice Areas
Showing 1 - 1 of 1 review | Domestic Violence
Posted by John | January 12, 2026 | Hired Attorney | Domestic Violence
Highly professional and results-oriented
Jason was professional and extremely effective in helping me in my case involving harassment. He took the time to visit me at my home, understand my circumstances and stay on top of the case through some twists and turns. He knows the law, he knows the courts and he will work closely with you to get ...
Jason B Grosky's Lawyer Endorsements
No Endorsement Data Available Yet
This attorney hasn't received any attorney endorsements recently on Avvo.
No Endorsement Data Available Yet
This attorney hasn't created any attorney endorsements recently on Avvo.
Experience
Work Experience
2025 - Present
Principal, Grosky Law Firm
2009 - 2025
Prosecuting Attorney, Salem (NH) Police Department
2007 - 2009
Assistant District Attorney, Essex County District Attorneys Office
Education
2006
Massachusetts School of Law at Andover
JD - Juris Doctorate