PRO
also known as John P. Mahoney
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John P. Mahoney focuses his practice on litigating federal employment law, labor, and national security clearance law cases. He counsels and represents federal employees, contractors, agencies, unions, and employee associations in a wide range of issues, including employment discrimination, EEOC complaints, MSPB appeals, whistleblower retaliation cases, and more. He is a nationally recognized attorney who has earned a Preeminent® Rating from Martindale-Hubbell® and has been selected as a 2017 Top Rated Lawyer in Labor & Employment Law. Mr. Mahoney, who also served as the Vice Chair of and an administrative judge with the Government Accountability Office's (GAO) Personnel Appeals Board (PAB), has an impressive record of success and is known for being able to deliver smart solutions along with caring advocacy.
To learn more about John P. Mahoney, Esq. visit his profile page on the website at:
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Practice Areas
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State: District of Columbia
Acquired: 1994
Lawyer disciplined by state licensing authority in 2016
State: Maryland
Acquired: 1993
Lawyer disciplined by state licensing authority in 2024
Ronald Reagan Building & International Trade Center, 1300 Pennsylvania Ave., NW, Suite 700, Washington, DC, 20004
attorneymahoney.com
Other places you can find John online.
Showing 16 - 20 of 27 reviews | Practice Area Knowledge
Posted by anonymous | December 22, 2020 | Hired Attorney | Employment & Labor
Initial Consultation
My initial consultation with Mr. Mahoney was Outstanding. He listened to my issue, provided sound advice and clearly went over the terms of our working relationship. I look forward to working with this law firm and feel more at ease navigating the EEO litigation.
As a business, we strive to satisfy our clients' expectations and it is rewarding to hear we met the mark for you. You can always count on us and we truly value the trust you put in us.
Posted by Richard | July 20, 2020 | Lawsuits & Disputes
So Glad I Contacted Mr. Mahoney!
I recently had false allegations made against me by someone in another agency. I called Mr. Mahoney. He provided not only sound legal advice, but guidance to help me know how to correctly handle being the subject of an investigation. The investigation confirmed that the allegations were without merit...
Posted by George | May 23, 2020 | Hired Attorney | Employment & Labor
Candid, Knowledgeable Counsel
I've never had any trouble in my federal service until I transferred to an organization with mediocre leadership and arbitrary performance standards. I was rather shocked to receive a Notice of Proposed Removal via mail when I was hospitalized for a medical condition incurred during military service...
Posted by Dan Teufel | May 18, 2020 | Hired Attorney | Employment & Labor
Security Clearance Revocation
John P. Mahoney was called upon In my Appeal after I had struggled with counsel from another law firm who knew very little about Federal employment law. John P. Mahoney gave me exact advice through his excellent knowledge of Federal law. He is timely and precise in his advice. I very satisfied ...
Thank you so much for your kind review of our legal services. It has been a pleasure representing you. Good luck with your future endeavors and if you learn of other federal employees in need of employment law or security clearance appeal representation, I would appreciate it if you would refer them to our Firm. Thank you.
Posted by anonymous | March 26, 2020 | Hired Attorney | Employment & Labor
Much appreciated!!
I want to thank my Mahoney Firm lawyer, Melissa Lolotai, Esq., for saving my job too. She was very good at allowing me to do the leg work which helped me financially. She was also good at focusing on my case while I was having an emotional melt down. Her writing skills at putting everything togeth...
Thank you for your kind review of our favorable legal services. It is our honor to effectively represent our federal employee clients and we are pleased that our representation resulted in a favorable outcome for you. If you learn of other federal employees who may benefit from our legal representation, we’d appreciate you referring them to us. Again, thank you for your favorable client review and good luck with your future federal employment. John P. Mahoney, Esq., Founding & Managing Partner
"John is an expert in this field and highly respected among peers."
"I endorse this lawyer. John Mahoney is a leading expert in employment law. He cares deeply about the needs of his clients and uses his expertise to ensure the best possible outcome for them."
"John is a great attorney and wealth of information on federal employment legal matters."
Employment and labor lawyer
Military law lawyer
This lawyer was disciplined by a state licensing authority in 2024.
Reciprocal - Suspension issued in MD, 2024
updated on 05/13/2025This means that the attorney's misconduct in another state, or jurisdiction, also violated the rules for practicing law in Maryland.
Informal Admonition issued in DC, 2016
updated on 09/14/2016An admonition means an attorney did something wrong but may still practice law. The Bar gives the lawyer an admonition in hopes that he or she will not repeat the behavior.
2021
Federal Employment Lawyer of the Year in Washington D.C., Corporate INTL
2021
Federal Employment Law - Lawyer of the Year in Washington D.C., Global Law Experts
2021
Featured Attorney, Lawyers of Distinction
2021
Top Attorneys, National Law Journal
2021
Top Lawyer, American Lawyer
2021
AV Preeminent 5.0 out of 5 Peer Review Rated, Martindale-Hubbell®
2020
Client’s Choice Award, Avvo
2020
Federal Employment Lawyer of the Year in Washington D.C., Corporate INTL
2020
Federal Employment Law - Lawyer of the Year in Washington D.C., Global Law Experts
2020
Top 100 Attorney, America's Top 100 Attorneys
2020
Top Lawyer, American Lawyer
2020
AV Preeminent 5.0 out of 5 Peer Review Rated, Martindale-Hubbell®
2019
AV Preeminent 5.0 out of 5 Peer Review Rated, Martindale-Hubbell®
2019
Top Attorneys, National Law Journal
2019
Top Lawyer, American Lawyer
2018
AV Preeminent 5.0 out of 5 Peer Review Rated, Martindale-Hubbell®
2018
Top Lawyer, American Lawyer
2017
AV Preeminent 5.0 out of 5 Peer Review Rated, Martindale-Hubbell®
2016
AV Preeminent 5.0 out of 5 Peer Review Rated, Martindale-Hubbell®
2015
AV Preeminent 5.0 out of 5 Peer Review Rated, Martindale-Hubbell
2014
AV Preeminent 5.0 out of 5 Peer Review Rated, Martindale-Hubbell®
2013
AV Preeminent 5.0 out of 5 Peer Review Rated, Martindale-Hubbell®
2012
AV Preeminent 5.0 out of 5 Peer Review Rated, Martindale-Hubbell®
2011
AV Preeminent 5.0 out of 5 Peer Review Rated, Martindale-Hubbell®
2010
AV Preeminent 5.0 out of 5 Peer Review Rated, Martindale-Hubbell®
2009
AV Preeminent 5.0 out of 5 Peer Review Rated, Martindale-Hubbell®
2008
AV Preeminent 5.0 out of 5 Peer Review Rated, Martindale-Hubbell®
2007
AV Preeminent 5.0 out of 5 Peer Review Rated, Martindale-Hubbell®
2006
AV Preeminent 5.0 out of 5 Peer Review Rated, Martindale-Hubbell®
2005
AV Preeminent 5.0 out of 5 Peer Review Rated, Martindale-Hubbell®
2004
AV Preeminent 5.0 out of 5 Peer Review Rated, Martindale-Hubbell®
2003
AV Preeminent 5.0 out of 5 Peer Review Rated, Martindale-Hubbell®
2014 - Present
Principal, The Law Firm of John P. Mahoney, Esq., Attorneys at Law
2009 - 2014
Partner, Tully Rinckey, PLLC
2009 - 2014
Chairman of the Labor & Employment Law Practice Group, Tully Rinckey, PLLC
2003 - 2008
Managing Partner, Mahoney & Mahoney, LLP
2000 - 2003
Senior Associate, Shaw, Bransford, Veilleux & Roth
1992 - 1999
Attorney, Passman & Kaplan, PC
Member
Member
2009 - 2014
District of Columbia Bar, Labor and Employment LawCo-chair
2003 - 2004
District of Columbia Bar, Labor and Employment LawPast Chair
ATTORNEY MAHONEY'S CLIENT AWARDED NEARLY $330,000 BY THE EEOC:
MSPB Mitigated Client's Removal to 90-day suspension with backpay, benefits, & fees
Attorney Mahoney's Client Awarded Approximately $1,000,000, plus removal canceled and returned to LEO duty with a promotion.
EEOC Ruled Attorney Mahoney's client was discriminated against and ordered status quo anti relief, compensatory damages and fees..
Attorney Mahoney's Client's Removal Appeal Settled $45,000 in reasonable attorneys’ fees based upon the successfully enforced settlement.
Attorney Mahoney's Petition to Enforce Previous EEOC Decision Granted in successful SES nonselection EEOC case
Attorney Mahoney Secured Full-Relief Default Judgment Sanctions/Full Relied in Novel Removal EEOC Case
Settled Client's claims of sexual harassment, gender discrimination, and retaliation against FEC
Attorney Mahoney Settled Client's EEO Disability Discrimination Case v. NIH, NCI
Attorney Mahoney Successfully Represents the U.S. Department of the Treasury in MSPB RIF Appeal
Attorney Mahoney WIns EEOC SES Nonselection Case for Federal Employee
Attorney Mahoney won a finding of discrimination and an award of full relief, with backpay and compensatory damages in excess of $100,000
Attorney Mahoney Wins Novel Due Process MSPB Appeal for Class of Disabled Federal Employees
Attorney Mahoney won this case of first impression as the first case awarding compensatory damages under the Privacy Act, 5 U.S.C. § 552a
Attorney Mahoney Won a Class Action in D.D.C., receiving a multi-million dollar backpay award for all retired U.S. Park Police
42 U.S.C. Section 2000e-16 amended to cover Smithsonian Institution
1993
JD - Juris Doctor
1990
BA - Bachelor of Arts
2009
How to take an effective deposition- CLE Attendee
2011
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