Marshall L Hennington, Ph.D. Expert Witness

Contact Information

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Specialties & Experience

General Specialties:

Employment and Behavioral and Social Sciences

Specialty Focus:

Employment, Harassment, Human Resources, Sexual Harassment, Discrimination, Wrongful Termination, Retaliation, Workplace violence, Race, Personal injury, Employment Law, Employment Litigation, Trial Consulting, Jury Consulting


Bachelor of Science, University of California Berkeley; Masters of Education, Columbia University, New York City; Masters of Arts, California School of Professional Psychology; Ph.D., California School of Professional Psychology

Years in Practice:


Number of Times Deposed/Testified in Last 4 Yrs:


Additional Information

Employment Law Expert, Expert Witness and Litigation Consultant Current President and CEO of Hennington and Associates Psychological Group, Inc. Offices: New York, Miami, Beverly Hills, Sacramento University of California Berkeley and Columbia University Educated, Ph.D. Consulted in over 100 civil and criminal cases in 25 year career. Helped Plaintiff Lawyers obtain over 20 million dollars in Jury Verdicts in 2019. Helped Defense Lawyers obtain 10 Jury verdicts in 2019. Marshall L. Hennington, Ph.D. received his Bachelor’s Degree in Social Science from the University of California Berkeley. Received his Educational Masters Degree in Counseling Psychology from Columbia University in New York City, received his Master’s degree and Ph.D. from the California School of Professional Psychology with honors. Dr. Hennington has extensive experience administering psychological personality test and he has a thorough understanding of the EEOC labor employment related practices and procedures in the workplace. Dr. Hennington has testified in trials involving; Discrimination, retaliation, wrongful termination, race, change of venue, sexual harassment, workplace bullying, sexual abuse, verbal abuse, physical abuse, employee misconduct, police brutality, wrongful death matters and workplace violence issues. Dr. Hennington’s specialty areas include but are not limited to the following: Age Discrimination Employee handbooks Corporate and/or policies and procedures Defamation Gender discrimination Pay discrimination (Equal Pay Act) Constructive discharge Pre-employment testing Disparate treatment Promotion discrimination Racial discrimination Retaliation Failure to supervise Testing and hiring discrimination On-the-job training Failure to train Reasonable accomodations Hiring discrimination Sexual harassment Hostile environment Job descriptions and job analysis Violation of code of ethics Violation of public policy Whistle blower Negligent hiring, retention and supervision