Isaac Mamaysky is a Partner who provides insightful, strategic business advice to management teams and in-house attorneys across a variety of industries. His clients range from multinational corporations and large educational institutions to national nonprofits and privately-held companies. Mr. Mamaysky advises clients in matters related to employment law, human resources, regulatory compliance, high stakes negotiations, dispute resolution, and litigation. Mr. Mamaysky is also well-versed in crisis management and crisis communication, and he supports leadership teams when they face complex, unexpected challenges.

Mr. Mamaysky regularly conducts internal investigations, writes and assesses employment agreements, advises human resources professionals, manages sensitive employee separations, drafts and reviews employee handbooks, ensures compliance with state and federal regulations, leads settlement discussions and complex negotiations, and advises on dispute resolution and litigation. He also regularly conducts corporate trainings on preventing discrimination and harassment, managing institutional risk, and related topics.

In addition to his legal background, Mr. Mamaysky has nearly a decade of business experience running a large tax-exempt corporation. With a deep understanding of management, organizational leadership, financial modeling, and strategic planning, Mr. Mamaysky approaches his clients’ legal matters with a business mindset. For this reason, Mr. Mamaysky especially enjoys serving as outside general counsel to management teams, bringing together his business background and legal insights to help them achieve their organizational goals.

Mr. Mamaysky has published and been quoted in dozens of articles, including in Fortune Magazine, Yahoo Finance, Lexis Nexis’ Law360, the Society for Human Resource Management, and other publications. He is a member of the volunteer faculty of LawLine, where he delivers continuing legal education classes on employment and human resources topics. Mr. Mamaysky is also the author of a book about navigating the challenges of law school. Prior to joining Potomac Law, he was in the national litigation practice of Bingham McCutchen LLP (now Morgan Lewis LLP).

Representative Experience

  • Oversee internal investigations regarding employment issues, such as harassment and discrimination allegations, ethics and business conduct violations, and similar matters. Draft investigation reports and advise management teams on implementing appropriate resolutions.
  • Draft and review employment agreements, employee handbooks, and various internal employment policies, and advise management teams on compliance with federal and state employment laws.
  • Design and implement anti-discrimination and anti-harassment policies and related corporate trainings, analyze and ensure compliance with relevant laws and regulations, and support management teams in resolving related challenges.
  • Lead negotiations of various complex commercial relationships between businesses, and draft contracts to memorialize those relationships.
  • Advise management teams regarding compliance with various state regulations and develop strategic approaches to relationships with regulatory bodies to achieve desired outcomes.
  • Assist clients in resolving disputes before reaching the point of litigation, lead settlement discussions, and draft settlement agreements.
  • Experienced in a variety of litigation matters, including multi-district, multi-party commercial litigations, smaller state court matters, and assisting clients in overseeing third party insurance-provided litigation counsel in covered matters.

Publications and Speeches


  • Letter to a One L Friend: A Little Guide to Seeing the Big Picture and Succeeding in Law School, Carolina Academic Press (2019)

o Featured in Making the One L Path (a Little) Easier, Joel Brown, Bostonia (2019)

o Reviewed in the Canadian Law Library Review by Katie Cuyler (2020)

  • The Growth Equation: Retention, Marketing, and Sales, Healthy Learning Press (forthcoming 2021)


  • Rehiring Furloughed and Laid Off Workers Post-Pandemic, Law 360, Expert Analysis, with Wendy Fischman (2020)
  • Furloughs: Weighing the Unemployment Costs and Benefits, Law 360, Expert Analysis (2020)
  • What Initial Reopenings Teach Us About Virus Safety Plans, Law 360, Expert Analysis (2020)
  • Employer Takeaways from EEOC Virus Screening Guidance, Law 360, Expert Analysis (2020)
  • Role for COVID-19 Liability Waivers in Employment is Limited, Law 360, Expert Analysis, with Mark Papadopoulos (2020)
  • Temporary Payroll Cuts in a Downturn: Furlough and Other Strategies, Potomac Law Group Client Alert (2020)
  • FFCRA and Paid Leave: State and Federal Law, AM Skier Newsletter, with Alan Cooper (2020)
  • Paid Leave: The Intersection of New York and Federal Laws, Westchester County Bar Association (2020)
  • New York's Paid Leave Law in Response to COVID-19, Westchester County Bar Association (2020)
  • Key Policies for Minors on University Campuses, University Business Magazine, with Catherine Guttman-McCabe (2020)
  • Are We Obligated to Give Refunds? The Impossibility Doctrine and Business Considerations, Regpack Blog (2020)
  • Ask the EEOC: Key Takeaways for Employers from the March 27th Webinar, Westchester County Bar Association (2020)
  • Supreme Court Decides Whether to Protect Transgender Staff, Camp Business Magazine (2020)
  • The FTC Has Its Sights on COPPA, and Edtech Providers Should Take Notice, EdSurge (2019)

Quoted In

  • Some Employers Have Illegally Fired Workers Who Refuse to Sign COVID Liability Waivers, Fortune (2020)
  • Guide to Re-Onboarding: Best Practices for Bringing Your People Back from Furlough, Glassdoor for Employers (2020)
  • Some Employers Forgo FMLA Certifications During COVID-19 Pandemic, Society for Human Resource Management (2020)
  • 10 Tips for Protecting Workers During the Coronavirus Pandemic, Society for Human Resource Management (2020)
  • Weathering Coronavirus: Furloughs, Layoffs, or Pay Cuts? Society for Human Resource Management (2020)
  • What to Do When Scared Workers Don't Report to Work Due to COVID-19, Society for Human Resource Management (2020)
  • Recall Furloughed Workers Lawfully, Society for Human Resource Management (2020)
  • Temperature Screenings: Review State Laws, Society for Human Resource Management (2020)
  • Recalling Furloughed Staff: Two Common Legal Risks, Gartner, Legal and Compliance Research Team (2020)

Continuing Legal Education (CLE) Classes

  • Rehiring from Layoffs and Furloughs, Who to Bring Back and How? Federal Bar Association and MyLawCLE, with Wendy Fischman
  • Reopening – and Staying Open – During the Pandemic: Creating a COVID Safety Plan, LawLine
  • Reopening Workplaces During COVID: Rehiring Staff and Mitigating Risk through Health Screenings and Liability Waivers, LawLine, with Wendy Fischman
  • Employer and School Liability for Reopening During COVID-19, Rossdale CLE, with co-presenters

University Lectures

  • University of Rhode Island: Invited to speak to students and faculty regarding the value of a humanities degree to business careers.
  • University of Connecticut: Invited to speak to aspiring law students regarding all aspects of legal practice, the law school experience, and related topics.
  • Clemson University: Invited to speak to group of students regarding risk mitigation strategies in youth-serving organizations.
  • City University of New York: Multiple semesters teaching an undergraduate philosophy course on critical thinking and logical reasoning.

Other Speaking Engagements

  • COVID-19 Reopening Best Practices: Manual vs. Automated Temperature Checking, Intraedge/Truyo, with Janalyn Schreiber.
  • (un)Employment Law in the COVID-19 Era, Nonprofit Montgomery, with Wendy Fischman.
  • What Executive Leadership and HR Professionals Need to Know, Potomac Law Group Client Webinar, with Catherine Guttman-McCabe, Mark Papadopoulos, and Wendy Fischman.
  • Key Legal Trends Impacting Management Teams, ACA Tristate Conference, with Alan Cooper.

Memberships and Affiliations

  • Society for Human Resource Management, National and New York City Chapter
  • Employment Law Committee, Westchester County Bar Association.
  • Higher Education Protection Network (organization works to safeguard minors on university campuses).


Boston University School of Law, J.D.

  • cum laude
  • Paul J. Liacos Distinguished Scholar
  • Edward F. Hennessey Scholar
  • Member of the International Law Journal

University of Rhode Island, Honors Program, B.A. in Philosophy

  • summa cum laude
  • Recipient of the Reslow-Bannon Award for Embodying the Spirit of the Honors Program

Previous Experience

  • Bingham McCutchen LLP (now Morgan, Lewis & Bockius LLP)


  • Connecticut
  • New York
  • U.S. District Court for the Southern District of New York

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