Lead Counsel Rated

Marzzacco Niven & Associates

Workers' Compensation Lawyer | Serving Harrisburg, PA

Free Consultation

1909 North Front Street , Second Floor, Suite 1
Harrisburg, PA 17102

Strong Advocates For The Injured And Disabled

For more than 25 years, our respected attorneys have been providing comprehensive legal services to people who have suffered an injury at work or who are living with a medical condition that will not allow them to maintain full-time employment.

Our firm's entire practice is dedicated to matters involving Social Security Disability and Pennsylvania workers' compensation claims. Our lawyers have a complete understanding of the law, and we are committed to obtaining the best possible result in every case. We draw on our diverse experience and legal backgrounds to develop customized solutions designed specifically to accommodate our clients' needs.

Our attorneys take a very hands-on approach to every case. We take our clients' claims seriously, and we diligently purse every available option in an effort to secure a favorable outcome. Our lawyers go out of their way to remain accessible to their clients. We respond to all inquiries within 24 hours and do everything we can to ensure that you have the information you need to make the right decision for your situation.

Contact us today if you need legal assistance with any of the following:

  • Workers Compensation
    • Workers' compensation concerns
    • Workers' compensation medical questions
    • Filing for workers' compensation
    • Workers' compensation claimant
    • Workers' compensation hearings
    • Workers' compensation appeals
    • Workers' compensation mediation
    • Workers' rights
    • Workers' compensation whistleblowing
    • Workers' compensation settlement
    • Disability retirement
    • Workers' compensation benefits
    • Nurse case managers
    • Claims petitions
    • Independent medical examinations
    • Impairment rating evaluations
    • How workers' compensation, SSD and unemployment work together
    • Workplace accidents
  • Social Security Disability
    • Social Security Disability Insurance (SSDI)
    • Supplemental Security Income (SSI)
    • SSD application
    • SSD requirements
    • Denial of SSD claims
    • Social Security appeals
    • Social Security benefits
    • Benefits for disabled children
    • SSD hearing process
    • Injuries and impairments

Founding attorney Katherine L. Niven served as both a Pennsylvania workers' compensation judge as well as Chief Counsel for the Pennsylvania Bureau of Workers' Compensation.

Call the Marzzacco Niven & Associates today at 717-231-1640 to arrange your free initial consultation.

Attorney Profile

Katherine L. Niven, Esquire


  • Pennsylvania
  • District of Columbia
  • US District Court Middle District of Pennsylvania
  • US District Court Eastern District of Pennsylvania

Admitted To The Bar:

  • 1986


  • University of Pennsylvania Law School, Philadelphia, Pennsylvania
    J.D. - 1986
  • Antioch University, New York, New York
    B.A. - 1975

Professional Memberships and Achievements:

  • Pennsylvania Bar Association- Worker's Compensation Section, 1990 - Present
  • Dauphin County Bar Association Disabilities Section, 2009 - Present
  • National Association of Disability Representatives
  • National Organization of Social Security Claimants' Representatives
  • National Alliance on Mental Illness
  • Berks County Bar Association
  • Dauphin County Bar Association
  • Lancaster County Bar Association
  • Pennsylvania Bar Association


The best law firm I ever dealt with

Keith L.

Calls and questions answered in fast time

Brian C.

From the moment I contacted Katherine Niven & Associates, I finally felt a sense of having a team behind me, backing me up to work for my rights.

Christina H.

Katherine said we will lead you through the process and they did

Joseph I.

Your office handled everything for me. All I had to do was follow your directions and fill out forms as needed. Everything was so much easier with the process

Barbara V.

I appreciate your firm's knowledge, skills and your ability to impart them with compassion, patience and availability. Thank you to everyone who helped bring my case to a successful conclusion.

K. S.

Hardworking, courteous Associates who go above and beyond to help their clients

Gregory B.

Your firm was amazing – Every person who worked on both my cases was not only compassionate but the sense of urgency on both cases blew my mind. What a wonderful team. Thank you all so much.

Dakota R.

Everyone really cared, although I was just another case, that was not how I felt. You have a wonderful firm.

Dakota R.

You took care of everything and when I called, you always answered my calls.

Debra B.

I was treated with respect whenever I had a questions.

Michael D.

Your firm really goes the extra mile to help your clients and is there if you have any questions.

Kerry K.

Your firms efficient handling of my case kept me from stressing out, which I greatly appreciated

Cheryl W.

Your office was a pleasure to work with, very understanding and professional.

Doreen M.

You were recommended to us and we would gladly recommend you to any of our friends.

Joseph O.

I am very grateful for all you did. I had very little to do myself-which took away a lot of pressure and anxiety.

Deborah M.

From the start I felt very convinced that your firm was completely in control and I did not have to worry.

H. Swartz

Each staff member I worked with was very courteous and professional at all times.

Pat H.

Your office listened to my concerns and questions. You were very informative.

Leisa L.

Successfully completed my case and stuck with it even when I was ready to give up.

Brian H.

I needed someone who would have the knowledge and be able to explain things to me about my case. Your office staff did exactly what I had hoped.

Melissa F.

We recommended a friend to you about a year ago that is a client of yours now. We also recommended you to a neighbor. Not only did you help us with workers comp, you made it easy by helping with getting SSI.

Terry K.

Excellent firm. Katherine L Niven reassured me many times when I was having my most difficult times.

Cynthia E.

You took your time with me and answered all questions.

Don M.

Everyone was very professional and helpful. Every time I called with a question, it was answered very quickly. I was always amazed that you knew the details of my case so thoroughly.

Marsha G.

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