Extensio Law



Extensio Law has one mission: to provide prompt, creative, practical and value-driven employment law solutions that integrate and accelerate its clients’ business objectives.

The firm is named “Extensio,” Latin for “extension,” because we commit to complementing our clients’ leadership teams. We invest in learning our clients’ business strategies and challenges, we cultivate long-term relationships and we leverage shared institutional memory to provide an executive perspective with legal expertise.


managing member

Misti Mukherjee, Esq.

The Founder of Extensio Law, Misti Mukherjee represents employers in a wide range of issues related to employment law. As a former Chief People Officer, General Counsel, Executive Vice President and with decades in private practice, Misti’s almost 30 years of employment law experience integrates a practical, value-oriented approach.

Misti is consistently recognized for her excellent work. She has repeatedly been selected to be included in the Best Lawyers in America© for Employment Law, Virginia’s Labor and Employment “Legal Elite” (Virginia Business magazine) and Virginia and Washington DC “Super Lawyers®” for Employment and Labor Law (Law and Politics magazine). SmartCEO magazine has selected Misti as one of its SmartLawyers. Misti has twice been named one of the “Top 25 Women Attorneys” in Virginia by Richmond Magazine and she was listed as one of the “50 Influential Women of Virginia” by Virginia Lawyer’s Media.

Misti is a current Trustee on the governing board of Anne Arundel Health System, where she serves as Chairman of the Audit and Compliance Committee, and she is a past Chairman of the Board of Northern Virginia Family Service. Misti co-founded Executive Women’s Roundtable, Inc. and she served as President of HR Leadership Forum. Dedicated to the advancement of education, Misti has been a Trustee of The Madeira School and an Advisory Board member of Marymount University Reston Campus. She is the Co-Chair of the Advisory Board of the CARE (Companies as Responsive Employer) Awards. The Fairfax Law Foundation commended Misti’s exceptional commitment to her community by awarding her the “Golden Gavel” award.

After graduating from the Plan II Honors Program at the University of Texas at Austin, Misti received her law degree from the University of Texas. Prior to forming Extensio Law, Misti was General Counsel of Towne Park, LLC. She has practiced employment law as a shareholder with Jackson Lewis, PC, and Odin, Feldman and Pittleman, PC. Misti served as Associate Employment Counsel at MCI Communications Corporation and she began her career as an associate in the employment law practice of Hunton & Williams (now Hunton Andrews Kurth LLP).

Misti is a member of the Virginia State Bar and the District of Columbia Bar.



JD, 1991

B.A., Plan II Honors Program, 1988

Activities & Affiliations

• Anne Arundel Health System, Trustee and Chair of Audit and Compliance Committee
• HR Leadership Forum, Past President
• Northern Virginia Family Service, Past Chairman
• Executive Women’s Roundtable, co-Founder
• Capital Women, co-Founder

Bar Admissions

• Virginia, Washington, DC


Misti is a thoughtful leader and an incredibly sharp attorney. She commits herself to her craft by going deep with her involvement on issues and with her clients and partners.
— S. Mills