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David Katz

Location: Marlborough, Massachusetts
Phone: 508-480-8202
Fax: 508-480-8204
Email: E-mail Me

When I started to practice law 35 years ago, my father, also a lawyer, offered me some thoughtful and exceptionally valuable advice: listen carefully, do your homework, and above all, maintain a sense of humor – because you are going to need it. I have to admit that Dad was right and his wise words have resonated with me during my entire practice.  Listening attentively to my clients and meticulous preparation are indeed the hallmarks of success.  And, finding a way to put clients at ease establishes approachability, confidence, and most importantly, trust. Working closely with each client, I make sure that I identify the specific goals and strategies of any legal case or matter.   

I am that lawyer who gets right on the phone with clients even on a Saturday because I understand that sometimes questions just can't wait for regular business hours.  I am that lawyer who may be dressed casually around the office (suits are for the courtroom) but make no mistake, I am always a passionate advocate for my clients, no matter what I am wearing. 

 As founder and managing partner of the Katz Law Group, P.C., located in Marlborough, Massachusetts, my practice includes but is not limited to complex real estate litigation, employment disputes, premises liability defense, franchise and business litigation matters. I am cum laude graduate of Brandeis University and I received my law degree from the New England School of Law in Boston, Massachusetts where I was a member of the law review.

On occasion, plaintiffs and defendants from the opposite side of cases have gone on to hire me when the matters have concluded.  Some have said, “We need a guy like you.” Those words are reinforcement and reward to a lawyer like me.

Areas of Practice

  • 40% Business and Commercial Litigation
  • 30% Personal Injury Defense
  • 30% Employment Defense

Litigation Percentage

  • 100% of Practice Devoted to Litigation

Bar Admissions

  • Massachusetts, 1983
  • U.S. District Court District of Massachusetts, 1983
  • U.S. Court of Appeals 1st Circuit, 1983


  • New England School of Law, Boston, Massachusetts
    • J.D.  Cum Laude-1982
    • Law Review: New England Law Review, Book Review Editor, 1980 – 1982
  • Brandeis University, Waltham, Massachusetts
    • A.B. Cum Laude – 1979
    • Honors: With Honors
    • Honors: Dean's List, 1978-1979
    • Major: American Studies
    • Minor: Art History

Published Works

  • The Continuing Separation of Functions Problem Under Section 554(d) of the Administrative Procedure Act, New England Law Review-Symposium on Administrative Law, Volume 16, No.4, 1982
  • The Mass Marketing of the JFK Assassination Brandeis University Press, 1979

Honors and Awards

  • Outstanding Contributor MetroWest Animal Society, 2009
  • Major Contributor to Bay Path Animal Society, Hopkinton, Massachusetts
  • A+ Accredited Business Award, Better Business Bureau  January 2018
  • Best Insurance Directory, Preferred Outside Counsel 2016
  • Avvo 10.0. Avvo Top Attorney "Client's Choice Award" for 2018, 2017, 2016, 2015 and 2014

Professional Associations and Memberships

  • Corridor Nine Chamber of Commerce, Member, Board of Directors, 2007 – Present

Past Employment Positions

  • Seegel, Lipshutz & Wilchins, P.C., Of Counsel, 1999 – 2002
  • Shane & Paolillo, P.C., Senior Member, 1991 – 1999
  • Roberts, Newman, and Katz, P.A., Associate, 1983 – 1991

Pro Bono Activities

  • Bay Path Animal Society, 2005 – Present
  • MetroWest Animal Society, 2005 – Present

Recent Blog Posts


  • Great Collection Attorney

    David has handled several collection cases for me in an extremely helpful and professional manner. He is very responsive and his fees are very reasonable.
  • Tory Recommends David Katz

    We hired David recently to help us with a lawsuit. David helped us with a landlord tenant issue and relieved so much stress for us. My husband and I weren't sure how to navigate the process and David was extremely patient and helpful explaining each of the steps and guiding us through the process...
  • breaking lease

    David helped me get out of my lease agreement with my landlord. He was fast to reply and played a very large part in managing the communication as the conversations got difficult. He was kind and supportive through a difficult process and that was very appreciated.
  • Bay Rivers Industrial

    The owners of Bay Rivers Industrial gave us a Personal Guaranty of payment in exchange for providing material to their business. The business closed, and the owners reneged. We retained attorney David Katz to represent us. In cases such as this, speed is called for, and Attorney Katz moved quickl...
  • Excellent Business Attorney

    Dave has handled several of my cases over the years and has always yielded great results. He is professional, honest, dependable, and is a major asset to my company. I would recommend him to anyone who wants a excellent business attorney to represent them.
  • Attorney David S Katz brings the honor of a handshake to the modern day.

    Attorney David S. Katz has the experience with, and the understanding of how the system should work in order to protect a company when customers do not satisfy their monetary obligations. As a business owner, having an attorney who protects your interests and swiftly brings positive resolution to...
  • David gets the job done.

    I was being sued personally as well as my company by an independent contractor regarding labor law. After taking the time to research for the very best suited lawyer for my situation/case and speaking to a few attorneys, I decided to picked David. We spoke and right away he made me feel comfortin...
  • Fantastic Attorney!

    I consulted with David on a lien issue that arose on a general liability case. David was extremely knowledgeable and quick to respond to all questions and correspondence. David helped bring this case to a successful resolution.
  • Fellow Attorney Review

    David assisted my office in clearing up a title issue for one of my clients. David was very responsive, efficient and provided me with regular updates on his progress. It was a pleasure working with David and I look forward to the next transaction we work on together.
  • Home Improvement Contractor Misery

    I hired David Katz Esq. for a civil matter involving a home improvement contractor who represented himself as licensed and insured. The contractor's work had to be completely tore down and redone costing 3X what a project like mine should have cost. David was quick acting in making sure that we p...
  • Consultation

    I contacted Attorney Katz regarding a business to business collection issue. He responded quickly and was obviously very informed and adept in this area. I would recommend contacting him for resolution.

    We are located in SC and needed an attorney to represent us in MA. David Katz was prompt in responding and most helpful with advice regarding our case. Would highly recommend him !
  • Client

    Attorney Katz provided clear, concise, and accurate guidance during an uncertain and difficult time relating to a slander/defamation lawsuit. He was quickly responsive to my calls and questions. I would highly recommend Attorney Katz if you are faced with any lawsuit pertaining to defamation and ...
  • Highly recommended

    David did a great job settling our liability claim. He was very thorough, detailed and a tough negogiator. I would recommend him to anyone who needs a great lawyer.
  • Review of David Katz

    I am the GM of a Manufacturing/retail masonry supply business. Over the last 20 years, I have had the occasion to retain David Katz on 6 or 7 different litigation issues with our last case just settling a month ago. I have been extremely happy with the results of all these cases. With each case, ...
  • Consultation - Work place harassment

    I reached out to David about harassment at work place. He responded immediately, asked for relevant information and set up a consultation outside of his regular hours. He listened empathetically and gave an initial assessment. He also expressed genuine concern and suggested options. I will defini...
  • Quality consult

    David provided us with an insightful consult on a matter of customer payment dispute. In the end we did not need to consign David's services since we settled with the customer however David's free initial consult got us pointed in the right direction! Given him a call! Very approachable and helpful.
  • Aggressive efforts in the pursuit to recover our debt

    EBP really appreciates all of your and your team's aggressive efforts in the pursuit to recover the $17,230 debt owed to EBP. It was a pleasure and impressive to see what went into the collection process and all of the steps taken in an attempt to collect on this claim. EBP is looking forward t...
  • David Katz is the best !

    David Katz is the greatest ! When I was looking for a top-notch attorney who has vast experience with business contracts and litigation. I found David Katz.. He helped me draft an excellent and detailed Client Contract and Liability Release Form for my home-based pet-sitting business. I like work...
  • David S. Katz gets the job done!

    My company recently hired David to create a Credit Application for prospective customers which would protect our business's interests. We also had David pursue an overdue account which we could not collect. David managed to get our funds for us without having to go to court. We were very happy wi...
  • An attorney who gets it done

    Once David is assigned an account he attacks the account with the most upmost importance. In my prior position, David won many cases assigned to him in a reasonable amount of time.
  • Exceptional Service

    I worked with David on a real estate matter. He is knowledgeable, experienced and provides a very high level of professional service. Most importantly , he was quick to respond to my emails and inquiries. I highly recommend David and you can put your trust in him!
  • Extremely Satisfied!!!

    Attorney Katz has been very helpful to me in many litigation matters. He is an extremely competent attorney who knows the law very well. His guidance and advice has been "priceless" in making my personal and financial matters more secure and stress-free!
  • Hard working and dedicated to the client.

    We hired Atty Katz for a civil matter that was across the state from where we live. He is absolutely amazing and communicated via phone, text and email through out the entire process. We were always in the loop on every email or correspondents that transpired between counsels. His attention to de...
  • Business matter resolved

    Working with David Katz was a good experience. He used his knowledge of the process as well as leveraging my previous experience and knowledge to help achieve the best results in the most efficient, cost effective manner. I am satisfied with his services and would recommend him to anyone.
  • Work separation agreement

    David helped me out of a work separation agreement where if I signed it for the small offered I would have limited chances in finding a new position in my industry. He was prompt and professional.
  • Review of David S. Katz

    I am General Counsel for an equipment finance subsidiary of a national bank. I retained David as local counsel in a multi-jurisdictional matter relating to a large lease portfolio purchase in which the lease-originating vendor defaulted in required service and numerous lessees stopped making paym...
  • An Excellent Decision

    I am not a person of many words although I should be, because of my job but I like to keep it simple and concise. The decision to start using Mr. Katz turn out every well, I find to be sincere , very professional plus his firms does a good job in helping us recover funds. I highly recommend his...
  • Working towards a common goal

    David showed personal interest in the case. He remained in contact with me and
  • Straight forward and protective

    David cares about protecting his clients and this is obviously a valuable trait. He isn't afraid to tell you how he really feels about a proposed agreement before you sign. Much appreciated.
  • Review of David Katz

    David is extremely knowledgeable in regards to all areas of debt collections and what the best course of action is for our company. He takes the time to listen and always gives multiple suggestions on the best steps to take. He is very professional and always makes himself accessible for question...
  • Property Consultation

    I called David looking for assistance regarding a property line dispute. I have never needed to work with a lawyer in this regard before, and found David extremely helpful. I explained the situation to David, and he was able to provide me several different courses of action to take, explaining wh...
  • Efficient contract reviews

    I started a new consulting business and hired Attorney Katz to review my contracts and consulting agreements. His insights prompted a number of changes to the content of the agreements. He was very efficient in his review and provided comments over a weekend so that I could have my first paying c...
  • Robin

    David Katz is an extremely knowledgeable professional lawyer. His interpersonal skills are exceptional. He has incredible analytical and logical reasoning abilities. I believe this stems from his strong work ethic, which far surpasses any other attorney that I have worked with in this industry. I...
  • A skilled, no-nonsense negotiator

    We hired David Katz to collect on a past due account balance with a prime contractor. My first impression of Attorney Katz was that he was a no-nonsense negotiator. Throughout our time working together I found that he possessed a far greater depth of knowledge and strategic skill than was apparen...
  • Division Credit Manager

    David has handled several cases for my company, and has achieved very good results. We will continue to use him throughout the future.
  • David Katz Review

    David is a proactive, engaging attorney who handled a premises liability case for a national market insured. David's reports were thorough and he was very responsive to any e-mail or phone inquiries on the case. David's firm handled all of plaintiff's discovery responses timely. We were able to s...
  • Client Review

    David played a significant role in resolving a Preference Payment issue we faced with a Bankruptcy Trustee. David was able to negotiate a fair settlement that helped minimize our losses
  • Expert Consultation and Execution

    David asked cogent questions and understood our complicated issue quickly and completely. He covered all aspects of our risk involved with a recent business transaction and gave us expert advice. We would definitely use David again.</p
  • Highly recommended by in-house counsel

    David Katz work on numerous cases for me during my tenure as in-house counsel with a Berkshire Hathaway subsidiary. He was everything that I want in outside counsel – cost-efficient, responsive and consistently delivering great results.
  • Excellent Product Liability Defense

    David has provided critical product liability defense over the years for our company and brand. David has shown to be a team player and provides clear and concise case strategy and immediate updates as individual cases move along. David takes the necessary time to collaborate with us on case acti...
  • Someone You Would Definitely Want On Your Side

    David Katz has represented me on several litigation matters. He is an extremely competent litigation attorney-someone you would definitely want on your side!
  • Consultation

    I consulted David about a potential dispute with a former landlord. I called the Katz Law Group on a Saturday and was pleasantly surprised when David himself picked up the phone and then proceeded to discuss my concerns with me at length and in a thoughtful manner. He immediately came up with a l...
  • Claims Manager

    David Katz has helped us out on a number of occasions. He is very professional and has added value to our panel of attorneys
  • Help with contract agreement; non-compete

    I consulted with David Katz regarding contract law, specifically Non-compete. David Katz agreed that the wording was imprecise and somewhat vague, then presented me, in a bullet point format, a plan to follow that would satisfy the contract, save me from being involved in a murky dispute, and all...
  • David S. Katz

    David has handled several contractual litigation cases for me in the past. He is efficient, knowledgeable and will get results in a timely manner. He and his staff are a pleasure to work with. I highly recommend him!
  • 93A Response.

    David was phenomenal. He is extremely professional responsive and communicative. I really really enjoyed working with him and he is certainly the point man for all my future and present US commercial needs.
  • All around great attorney for small businesses

    Attorney Katz was reliable, professional and gave us great advice. He drove out to our company and spent time with us going over facts and how best to handle various situations. He was patient and very helpful. We would defiantly work with him again.
  • To the point and diligent

    I hired David to represent me to resolve a dispute with a landlord. I really liked the way David works. He is to the point and asks very specific information and then gives you options based on the information you provide. The more clear you are in providing him the information better will be the...
  • Car title recovery

    After attempting (for 4 months) to obtain a title on a car I purchased from a dealership in Massachusetts, I retained David. Quickly he reviewed the documentation, researched the statutes and drafted a demand letter detailing future legal action we were prepared to take; the title arrived within ...
  • Lemon law case

    After a car purchase last December from a Massachusetts dealership, it quickly became painfully obvious the vehicle was a lemon. After trying to discuss the matter with the dealership, and being wholly dismissed, we tried sending a Chapter 93a letter on our own. When that failed, we hired Attorne...
  • David S. Katz

    I am an independent contractor and hired David to collect past due balances. He listened to the issues and recommended several options to move the case forward. David was always available to answer any questions or concerns and set realistic expectations throughout the process. He successfully br...
  • Dependable and knowledgable

    David is a savvy, efficient and effective lawyer who gets good results for his clients. He is an experienced litigator with a wide range of skills. David is good at follow-up and fighting hard for his clients.
  • Very dedicated and helpful

    David was a tremendous help in dealing with a tenant dispute. The situation involved a tenant who was acting in a fairly emotional and unreasonable way. He was able to help me resolve the situation with the tenant with a relatively small settlement, and with strong legal language and protections....
  • Excellent service

    I was being harrassed for a few years, and the police was not doing anything about it. I hired David and he helped me. He sent a cease and desist letter to that person and she stopped harassing me. Thank you so much for your help!
  • Credit Collection

    David has been phenomenal at collecting past due accounts. Accounts which were previously written off an left for dead have been collected in full with attorney fees at a much higher rate than with previous attorneys. I would recommend him to anyone searching for a collection attorney.
  • Swift Results!

    David Katz represented my husband our company in the spring of 2018 regarding a labor law dispute which had been pending for 4 years. Through his guidance we were able to swiftly move through the process and ultimately both cases were dismissed. Throughout the process he regularly stayed in touch...
  • Helpful and efficient

    We found David to be a dedicated and knowledgeable attorney. He gave clear yet concise explanations, and we came away from our conversation feeling confident we understood our situation and our options. We highly recommend him as an efficient and helpful lawyer.
  • Successful Negotiation

    David and I negotiated an incentive compensation agreement for his client. He did a great job protecting his client's interests and was responsive and practical. We reached an excellent result.
  • Top Business Collections Attorney in Greater Boston Area

    Dave is a hard worker who is always thinking outside the box. He is down to earth and is a great asset/partner to our Credit Team.
  • Success!

    After years of searching for an attorney to handle a condominium case we found Attorney Katz. His enthusiasm for our case is what sold us. He listened to our issues and immediately laid out what we needed to do to reach a successful resolution. He was confident that we could win and knew exactly ...
  • Tenacious attorney!

    I've used David on many civil litigation cases and have found him to be very professional and tenacious. He does a superb job as a civil litigator. I've made several referrals to colleagues and friends, and they too have been very pleased with his efforts.
  • Defense counsel review

    David Katz has handled at least 5 premises liability claims for my client, an operator of large chain restaurants, in the state of Massachusetts. We were able to reach a successful resolution on all of the matters in a cost-effective manner. He is always responsive to our requests and provided ne...
  • Fantastic service & professionalism

    I was very impressed with my total experience with Mr. David on defending and resolving a law suit. The case was based on a non-compete agreement violation and brought against me in a different state than where I reside. Mr. David worked for me remotely over phone and email and was very prompt in...
  • Great Job!!!

    David Katz handled a collection issue matter for our company in Massachusetts. The result was exactly what we were hoping for and will hire him again if anything further arises.
  • Business Client

    David has handled several problems for me in an extremely helpful and professional manner. He is the best collection attorney I have associated with.
  • Dedicated

    David Katz is an extremely knowledgeable and helpful lawyer to all extents. He is very responsive and always has an answer to all my concerns. David always follows through and fights for us! Along with him comes a wonderful staff, who also does not disappoint. I highly recommend him to anyone who...
  • Awesome Attorney

    I called David about an issue of not getting paid and money owed to me for this. David was easy to talk to and was like a long lost friend you havent seen in years. First time I meant him for a consult seemed this way. He told me it wouldnt take long to get what was owed. He was right ! David is ...
  • Great experience with David Katz

    David was on the other side of a pretty serious personal injury matter and I found him to not only be a very zealous advocate for his client but also very easy to deal with as brother counsel. Although our positions were not aligned he was cooperative, diligent and ultimately we were able to work...
  • A Class Of His Own - WOW!

    David Katz represented me in a complex business case involving the sale of my employer. David is a great listener and takes a collaborative approach to identify and accomplish your goals. David's accessible almost 24/7 and stays in constant communication until I received a positive outcome. I HIG...
  • Insightful & Extremely Well Prepared

    David recently represented me on a temporary restraining order matter in Westborough. After reviewing my text messages and reviewing the affidavit, he clearly saw that the restraining order was fraudulently obtained. After writing his rebuttal and getting it into the hands of the judge prior to t...
  • Outstanding experience!

    Attorney David Katz has been one of the greatest professionals in the field we've ever met. His knowledge regarding any legal matter is superb. His aggressive approach on our case lead us to foresee what actions to take easily. We strongly encourage you to give him a call.
  • Condo owner from hell

    We are a small condo association (6 units) and had a major problem: An owner from hell. What did she do? You name it – she did it. Boyfriends dealing drugs. Fire in her unit. A week later burst pipes. Destroyed the unit underneath hers, as well as 12k damage to her unit. She hadn't paid condo fe...
  • Top notch, up front and honest Lawyer

    David is very responsive to all emails and phone calls. He knew the laws and was confident as bout the results. He didn't leave me chasing around for him. He got done what he agreed on the next day. Very thorough!
  • Excellent

    After reading numerous bios and basically scaring myself even more trying to navigate through this, as I was relatively new to this state, laid off and things starting to implode, I found David S Katz. He was very calming, straight forward and kept in communication all the way through and making ...
  • Great Job!

    David has been a real asset helping my company in the State of Massachusetts with corporate collections. His work has always been timely, in-depth and informing. I would highly recommend him.
  • David S. Katz

    As the owner of a small consulting business, David has been an integral part of ensuring all of the necessary steps are taken in protecting the rights of my business, staff and clients. He is quick to respond to all forms of communication and makes it a point to explain things in the most compreh...
  • Very Professional

    David Katz and his staff are wonderful. He reviewed my case and answered all my questions in detail and advised me on how to move forward. His entire team is very professional and trustworthy. I highly recommend to see David Katz if you are debating for business contractual litigation's.David per...
  • Always Yields Great Results.

    Dave has handled several of my cases over the years and has always yielded great results. He is professional, honest, dependable, and is a major asset to my company. I would recommend him to anyone who wants a excellent attorney to represent them.
  • Extremely responsive

    You know that pit in your stomach when you need legal advice and it's Sunday night. I messaged David Katz's firm fully expecting to get a reply during the week. Much to my surprise, I was contacted immediately with info and a plan to speak the next day. David was everything you'll read about him ...
  • Contract review assistance

    David was great to work with and gave me the extra confidence I needed to navigate a difficult situation with my employer.
  • Someone in your corner

    We recently hired David to help with a payroll that had been going on for a while. He was amazing, totally stood up for our rights and kept pushing even when we felt like giving up. He resolved the issue very quickly and now we can move on and put this whole thing behind us. I would definitely re...
  • Well Recommended

    I called David about an issue of not getting paid after working for several months. He was quick to answer me and to set up a consult. We met the same week and discussed my issues. Not only was he confident, he knew all of the laws regarding my issue. He stated that is was not only resolvable, bu...
  • David S. Katz

    I used David to improve our current credit application for our company, he was able to improve at a nominal price. We are looking forward using David for collections matters in the future. I strongly recommend David for your credit needs.
  • Bobbi Recommends David Katz

    We hired Mr. Katz to help us with a commercial collection issue. David was very professional and wonderful to work with. The case seemed to draw out longer than expected due to the opposing counsel. David did not give up and continued to push them to come to a resolution. Due to David's diligence...
  • Great investigation led to a successful conclusion

    We retained David to complete an investigation. The investigation was thorough and allowed us to settle the claim for a very reasonable amount. I do do not we would have achieved the result without David.
  • Someone You Would Definitey Want On Your Side

    David Katz has represented me on several litigation matters. He is extremely competent litigation attorney-someone you would definitely want on your side!
  • Excellent attorney.

    I retained David for a post-marital contract dispute resolution. One of the open questions was that of the correct jurisdiction, and David had to research precedents. Unfortunately, David concluded that MA does not have the jurisdiction in this case, and recommended an attorney in another state. ...
  • David is a great lawyer!

    David is extremely knowlegeable, he responds to questions quickly and he gets great results.

Call Today

We focus on preventative counseling, objective advice and guiding our clients toward strategies for mitigating risk while efficiently and effectively conducting business. Call today for a consultation.