William I. Greenbaum Partner

New Jersey
T 973.422.6766 | F 973.422.6767

Bill tackles potentially volatile employment law matters with pragmatism and a thorough understanding of the employers he represents. Backed by 17 years of experience as Assistant General Counsel for Employment Law at Warner-Lambert, he provides clients with practical solutions to difficult employment situations while minimizing costs and interruptions to their business.

A “fine lawyer with an excellent reputation” (Chambers USA), Bill focuses on all aspects of employment law, with a particular emphasis on the life sciences and pharmaceutical industries. He has extensive experience handling employment and severance agreements, policies, employee relations, equal employment opportunity, affirmative action, safety and health, immigration, ERISA, security and workplace investigations, and corporate compliance. In addition, he regularly resolves matters on behalf of employers before the EEOC; the U.S. Department of Labor; numerous state and local counterparts to these agencies; and the many federal, state, and local agencies that investigate and audit compliance with and enforcement of employment laws.

Bill also maintains deep ties to his community. He currently serves on the board of Free the Slaves, and formerly served on the boards of both Jersey Battered Women’s Service and the New Jersey Ballet. He is a founding member of the Academy of New Jersey Management Attorneys, an association of experienced labor/employment lawyers engaged as advocates for management.

Representative Engagements

Represented a pharmaceutical company in a major reorganization that involved two plant closures and nine reductions in force. Provided advice and prepared documentation relating to plant closures, federal and state WARN Act issues, reduction-in-force issues, severance payments, benefits continuation, releases of claims, and compliance with wage and hour laws in 50 states. Worked closely with the client's legal, human resources and payroll departments and its outside insurance and outplacement service providers to ensure the orderly handling of more than 600 employee separations and/or relocations. Continues to handle reductions in force and individual performance-based terminations for the client on an ongoing basis.
Advised a leveraged buyout firm on the employment and employee benefits aspects of the $2.4 billion carve out of the world's largest producer of hard capsules and an innovator in drug delivery systems. Bill provided legal counsel on employment law issues, negotiated employee contracts, advised on and drafted benefits programs, and assisted with setting up payroll in more than a dozen countries.
Represented a major pharmaceutical company in litigation against its insurance carrier, which refused to cover the defense of an employee's claim of age, sex and disability discrimination under an existing employment practices liability insurance policy.

Other Distinctions

  • Chambers USA: America's Leading Lawyers for Business (2012–2017) – Selected as a leading lawyer in the labor and employment section, clients praised him for being a "fine lawyer with an excellent reputation" and " a great counselor." Sources say they "value his advice greatly." Bill is also noted for handling "employment law issues pertaining to the pharmaceutical and life science arena. Clients applaud his 'sage and well-informed' advice”.

  • The Best Lawyers in America (2015–2018) – Recognized in the Employment Law - Management and Litigation - Labor and Employment categories.
  • Super Lawyers (2005–2017) – Consistently acknowledged for labor & employment and employee benefits/ERISA.

Speaking Engagements

  • Speaker, "Ban the Box: Where Are We Now?," Lowenstein Sandler and SterlingBackcheck Webinar, April 26, 2017

  • Speaker, "Ban the Box: Where Are We Now?," Lowenstein Sandler and SterlingBackcheck Webinar, June 1, 2016

  • Speaker, “Wage and Hour Update,” ACC NJ and Lowenstein Sandler Breakfast Series, January 20, 2016

  • Speaker, “How to Manage Leaves of Absence Under FMLA, ADA and Workers’ Compensation,”  Everything You Need to Know for 2016 Seminar, December 14, 2015

  • Speaker, "Wage and Hour Update," Lowenstein Sandler and ADP Seminar, September 29, 2015; September 30, 2015

  • Speaker, “Ban the Box Legal Compliance in 2015,” Lowenstein Sandler and SterlingBackcheck Webinar, February 19, 2015

  • Speaker, “Employee Background Checks and the Law in 2015: Is Your Company At Risk?” Lowenstein Sandler and SterlingBackcheck Seminar, January 29, 2015


New York Employers Beware: State and Local Salary Thresholds for Exempt Employees Exceed Federal Requirements
Employment Client Alert, December 1, 2016
William Greenbaum, Julie Werner, Joshua Knapp
New Hiring Restrictions Imposed Upon New York City Employers
Employment Alert, June 30, 2015
Julie Werner, William Greenbaum
New York City Employers To Be Restricted In Their Use of Credit Checks For Job Applicants or Employees
Employment Alert, May 11, 2015
William Greenbaum, Julie Werner
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Press Mentions

In an interview with Governor David Paterson on WOR 710 Radio, William Greenbaum discusses the legality of employers asking for access to potential employees' social networking accounts, including potential discrimination under the anti‐discrimination laws and issues relating to concerted activity under the National Labor Relations Act. , WOR 710 Radio , April 3, 2012
In The Christian Science Monitor, William Greenbaum comments on the laws relating to employers' monitoring of employees' private social media postings. , The Christian Science Monitor , March 23, 2012
In a Law360 article, William Greenbaum comments on companies that require current or prospective employees to provide their social media passwords. , Law360 , March 22, 2012
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Related Areas

Employee Benefits & Executive Compensation
Employment Counseling & Litigation
Life Sciences


Cornell University Law School ( J.D. , 1976 )
Dartmouth College ( A.B. , 1973 ) , magna cum laude and Phi Beta Kappa

Bar Admissions

New York
New Jersey

Court Admissions

U.S. Supreme Court
U.S. Court of Appeals, District of Columbia, Second Circuit
U.S. Court of Appeals, District of Columbia, Third Circuit
U.S. District Court, Southern District of New York
U.S. District Court, Northern District of New York
U.S. District Court, Eastern District of New York
U.S. District Court, District of New Jersey


  • Academy of New Jersey Management Attorneys
  • American Bar Association
    • Member, Committee on Equal Employment Opportunity
  • Free the Slaves
    • Member, Board of Directors
    • Chairman, Human Resources Committee