Atty. Diane C. Haar

Atty. Diane C. Haar

Diane C. Haar founded and operates Hawaii Disability Legal Services, LLLC , a private, public interest law firm with offices in Honolulu and Kailua-Kona, Hawaii focusing on representation and legal reform for the benefit of individuals with disabilities throughout the state of Hawaii, American Samoa, Guam, the Commonwealth of the Northern Marianas Islands, the Philippines, and some of the other Pacific countries.

Honolulu Honolulu 19 yrs experience 19 year
Call (808) 458-4955 Book Appointment

Profile Summary

About Diane C. Haar at a glance

Diane C. Haar is a Principal based in Honolulu, Hawaii, practicing at Hawaii Disability Legal Services, LLLC. They have 19+ years of legal experience, licensed to practice since 2007. Their practice focuses on ssd, securities, and military. Admitted to practice in Nevada (Inactive) (2007), California (2008), United States Court of Appeals for Veteran Claims (2009), and Hawaii (2010). Educated at Yale University (J.D., 2003) and Yale University (M.P.H. University, 2003). Serands clients in Honolulu, HI and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Diane C. Haar founded and operates Hawaii Disability Legal Services, LLLC, a private, public interest law firm with offices in Honolulu and Kailua-Kona, Hawaii focusing on representation and legal reform for the benefit of individuals with disabilities throughout the state of Hawaii, American Samoa, Guam, the Commonwealth of the Northern Marianas Islands, the Philippines, and some of the other Pacific countries
  • She represents those who have become gravely disabled, including veterans, homeless individuals, and others before the Social Security Administration and the Department of Veterans Affairs in the Hawaii Federal District Court, the Court of Appeals of Veterans Claims, the U.S
  • District Court for the District of Columbia, and before the Ninth Circuit Court of Appeals
  • She is also barred in the U.S
  • Supreme Court
  • Diane recently finished a three-year term as a Hawaii Federal District Court Delegate, continues to serve on the Veterans Treatment Court Advisory Committee, the Hawaii Legislature’s Mental Health Task Force, and the board of the ARC in Hawaii
  • She also assists in interviewing and training Veterans Services Officers at the Hawaii Office of Veterans Services
  • Diane meets with Hawaii State and Federal Representatives on issues of interest and concern to the individuals she serves
  • She met with the Guam, Hawaii, and Alaska delegations to seek to get a bill for SSI passed for Guam in 2017, and issue she continues to champion
  • She also testified before the U.S
  • Senate Committee on Veterans Affairs regarding issues of importance to veterans in 2023
  • Diane has give continuing legal education courses for the Hawaii State Bar Association, NOSSCR, and other lawyer groups, primarily in solo lawyering, leveraging technology, new advances in technology, cybersecurity, and ethics
  • She previously taught at the University of Hawaii Richardson School of Law
  • She received the Eileen P. Sweeny award from NOSSCR in 2023
  • She is a finalist in 2024 for a Clio Community Champion Reisman Award for her and her firm's pro bono and public interest work throughout the Pacific
  • Prior to her work in Social Security and Veterans Disability, Diane practiced war crimes litigation before the Eritrea-Ethiopia Claims Commission in The Hague
  • Diane received her B.S. with Highest Honors from the University of California, Berkeley, and her M.P.H. and J.D. from Yale University
  • She is also barred in California, Nevada, and before the U.S
  • Supreme Court

Practice Areas Explained

Diane C. Haar's Areas of Practice

Each practice area below reflects the types of cases Diane C. Haar handles, with a brief overview of what that area of law covers.

Social Security Disability

SSDI and SSI attorneys for disability claims, denied benefits, and Social Security appeals.

Diane C. Haar is one of 26,532 ssd attorneys indexed nationally. Browse ssd attorneys in Hawaii →

Securities Law

Diane C. Haar is one of 64,529 securities attorneys indexed nationally. Browse securities attorneys in Hawaii →

Military Law

Military attorneys for court-martial, discharge upgrades, veterans benefits, and military family matters.

Diane C. Haar is one of 8,613 military attorneys indexed nationally. Browse military attorneys in Hawaii →

Jurisdictional Context

Why local counsel matters in Hawaii

Practicing law in Hawaii. Legal matters in Hawaii are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Honolulu are typically filed in the local municipal court or the appropriate Hawaii state district court, depending on subject matter and amount in controversy. An attorney licensed in Hawaii brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Hawaii courts without local counsel or pro hac vice admission.

Looking for additional Hawaii attorneys? Browse all attorneys in Honolulu or all attorneys in Hawaii.

Frequently Asked

Common questions about Diane C. Haar

Where is Diane C. Haar's law office located?
Diane C. Haar's law practice is located in Honolulu, Hawaii. The firm is Hawaii Disability Legal Services, LLLC. You can contact the office directly through this profile page.
What practice areas does Diane C. Haar handle?
Diane C. Haar focuses on ssd, securities, military. Each practice area listed reflects experience handling cases of that type in Hawaii.
How long has Diane C. Haar practiced law?
Diane C. Haar has 19+ years of legal experience and has been licensed since 2007.
Where did Diane C. Haar go to law school?
Diane C. Haar earned their education at (J.D., 2003); (M.P.H. University, 2003).
How can I contact Diane C. Haar for a consultation?
You can contact Diane C. Haar directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Education

J.D.
Yale University
- 2003
M.P.H. University
Yale University
- 2003

Bar Admissions

Nevada (Inactive)
Admitted: 2007
California
Admitted: 2008
United States Court of Appeals for Veteran Claims
Admitted: 2009
Hawaii
Admitted: 2010
United States District Court for the District of Hawaii
Admitted: 2010
United States Court of Appeals for the Ninth Circuit
Admitted: 2012
United States Supreme Court
Admitted: 2019
United States District Court for the District of Columbia
Admitted: 2021

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