Workers Compensation (HR) Expert Witnesses: 15

Aaron T. Olson has decades of experience in the field of Police and Human Resources. His foundation of knowledge and skills comes from a career in law enforcement, and being a college educator, expert witness, consultant, trainer, and private investigator.

Background Experience: Mr. Olson has 26 years of police experience with the Oregon State Police managing assignments in communications, recruitment, and patrol. He supervised and evaluated both police and non-police employees. He was a member of the OSP Procedures and Rules Advisory Committee and worked with Oregon's Department of Justice legal team in rewriting and validating OSP's trooper and cadet applicant hiring process. 

As a patrol supervisor, Mr. Olson directed major crime scenes and motor vehicle fatalities investigations. He reviewed and approved administrative, police, and use of force reports. He investigated allegations of police officer misconduct, conducted background checks, and participated in specialized tasks in community policing, dignitary protection with the U.S. Secret Service and other law enforcement agencies. In his tenure he had experience in police pursuits, the use of physical force and deadly force and next-of-kin death notifications.  

Mr. Olson is a former human resources investigator with Local Government Personnel Institute, Salem, OR. He conducted background and misconduct investigations on city and county employees and city and county elected officials, as well as city police chiefs. His misconduct investigations included sexual harassment, discrimination, retaliation and hostile work environments. He wrote the investigative reports and made the findings of facts on all misconduct allegations.

Besides being an expert witness, Mr. Olson is a private investigator. He is insured and bonded, and licensed through the Oregon Department of Public Safety Standards and Training, Private Investigator License #113509.

Mr. Olson is a published co -writer of multiple books, CARE Approach: Seeking Solutions to Human Problems and Multicultural Law Enforcement: Strategies for Peacekeeping in a Diverse Society. Further, he is an adjunct professor teaching at a community college and state university.

Litigation Support: Mr. Olson meets the criteria of an expert witness as outlined in the Federal Rules of Evidence. He has experience as an expert on cases involving police misconduct, police procedures, police and non-police use of force, police pursuits; wrongful death; personal injury; employer investigations on employees; and cases involving employer negligent hiring, negligent training, negligent supervision, negligent retention, management performance and retaliation. He also has experience in reviewing criminal cases for defense attorneys. Mr. Olson's services are available to attorneys' representing plaintiffs and defendants and include diagnostics, thorough reporting, depositions, arbitration hearings, and trial testimony as needed. Contact him today for a free initial consultation.

Areas of Expertise:

View Aaron T. Olson's Consulting Profile.

Edward J. Priz, CPCU, APA, has worked full-time in the Insurance Industry since 1976. In 1982, he also began consulting on commercial property and casualty insurance, and Workers Compensation insurance premium charges, and in 1987 established his own consulting firm to specialize in those fields, as Advanced Insurance Management. 

Mr. Priz holds the professional designation Chartered Property Casualty Underwriter (CPCU) from the American Institute of Property and Liability Underwriters, as well as the designation Associate in Premium Auditing, from the Insurance Institute of America. 

Litigation Support - Mr. Priz has been retained by policyholders, insurance agents and brokers, insurance companies, and a premium audit firm as an expert witness in his field, both as a consulting expert and as a testifying expert. He serves as an expert witness to counsel for Plaintiff and Defense and has testified in federal and state courts and arbitrations in California, Colorado, Connecticut, Delaware, Illinois, Florida, Louisiana, Mississippi, Nebraska, New Jersey, New York, Ohio, Pennsylvania, Tennessee, Texas, and Virginia. He is a member of the Forensic Expert Witness Association and currently serves as Vice-President of the Chicago chapter of that organization. He is also a member of the Society of Chartered Property Casualty Underwriters, and the National Society of Insurance Premium Auditors. 

Mr. Priz has also consulted on the drafting of legislation pertaining to Workers Compensation insurance in Illinois and has testified on insurance regulation before the Illinois legislature. He is the author of three books on the subject of Workers' Compensation insurance.

Edward Priz Expert Witness Services

Areas of Expertise:

View Edward Priz's Consulting Profile.

Tyla A. DiMaria has a Master of Science in Nursing (MSN), with over 25 years of experience in Serious Injuries and Catastrophic Illness within various clinical settings, management, work comp, and home care. Ms. DiMaria is a Registered Nurse certified in Case Management as well as Life Care Planning. She has owned her own homecare company since 2008.

As Principal of Best Care Life Solutions, based in Carlsbad, California, Ms. DiMaria reviews medical records, performs past billing analysis, consults and collaborates with physicians and other health professionals to formulate future care needs and Life Care Plans for patients with catastrophic injuries and chronic illness.

Ms. DiMaria provides nationwide services to both plaintiffs and defense attorneys. Expert Witness Services include Independent Medical Evaluations, Depositions, and In-Court Testimonies.

Areas of Expertise:

The Life Care Plan is crucial to individuals with injuries or chronic conditions requiring complex long-term healthcare intervention and management. It is an integrative plan for individuals with disabilities or chronic health conditions that includes items and services required, along with specific costs that addresses current and future needs. The Life Care Plan includes estimates for the current and future healthcare needs of individuals along with the associated costs.

Dr. Brian H. Kleiner was a former human resource manager for Ford Motor Company. He has had over 100 private and public consulting clients and has trained thousands of employees. 

Dr. Kleiner taught three 36-hour courses on KLCS-TV, has over 500 publications, and has given trial / arbitration testimony in over 70 cases, including one resulting in a $12.5 million plaintiffs verdict in 2014 concerning disability discrimination and wrongful termination. He has been profiled in Bender's California Labor and Employment Bulletin in 2007 as a result of his overall forensic expert successes and other achievements. 

Degrees Include:

• B.S. in Business Administration, Drexel
• MBA, UCLA
• Ph.D. Management, UCLA

Malcolm S. Cohen, PhD, President of Employment Research Corporation, has over 30 years of experience in the field of Economics and Employment specializing in Labor Markets and Statistical Analysis. 

Dr. Cohen founded the firm in 1997, after retiring as the Director of the Institute of Labor and Industrial Relations at the University of Michigan, which he directed for 13 years. With a PhD in Economics from the MIT in 1967, his research interests include labor market information, labor turnover, employment forecasting and labor shortages. He has directed several major studies to identify national shortage occupations and measure labor turnover using administrative records. 

Dr. Cohen's book, Labor Shortages as America Approaches the Twenty-first Century, was published by the University of Michigan Press. His most recent book, Global Skill Shortages, written with Professor Mahmood A. Zaidi, is published by Edward Elgar Publishing. He has had articles published in a large number of journals, including: Journal of Human Resources, Monthly Labor Review, Journal of Political Economy, Review of Economic Statistics, Journal of Economic Theory, and The American Economic Review. 

Litigation Support - Dr. Cohen has either testified or been a consultant in over 1,000 audits or cases and has testified over 150 times. He has also served as an expert to the EEOC and U.S. Department of Labor in discrimination cases, and has directed many research projects sponsored by government agencies. 

Areas of Expertise:

View Dr. Cohen's Consulting Profile.

Ramona Powell, SPHR, founder of exPRt HR Consulting, LLC, has 30 years of C-Suite Human Resources and Expert Witness Experience. She prides herself on linking human capital with business strategy.

Litigation Support - A nationally certified Senior Professional in Human Resources, Ms. Powell has a proven track record as an expert witness. Having served as an expert on over 25 cases, legal professionals for plaintiff and defense retain her for her proven ability to provide clear and concise opinions in cases covering a wide variety of topics. As an experienced business partner, she delivers results across all strategic and operational Human Resource practice areas.

Areas of Expertise:

Discrimination

Employment

Background Experience - Ms. Powell has proven experience developing peak performing HR organizations that support business strategy, productivity, and profitability. She is a strategic business partner to C-suite, with global experience in technology, healthcare, manufacturing and distribution operations in the U.S., Mexico, Europe, and Australia across diverse industries. Ms. Powell is responsible for the successful design and implementation of strategic HR initiatives, building and developing high performance HR teams, and aligning people strategy with corporate strategy.

View exPRT HR, LLC's Consulting Profile.

Boston Office
900 Greendale Ave., Unit 10
Needham MA 02492
T: 781-209-5820 F: 617-507-8412

CHRISTOPHER S. REECE has more than 25 years of experience in Executive Search and Management Consulting. He currently serves as Managing Director of EMA Partners, Boston, a firm that provides executive search consulting services. He also co-founded Group/HSA, a management consultancy specializing in human capital management based in Boston, and earlier Reece & Mruk Partners. Mr. Reece has conducted over 300 executive searches and numerous organizational and executive assessments.

Areas of Expertise: Executive Compensation, Employability, Executive Search, Career / Vocational Assessment. Outplacement, Earnings Capacity

 View Curriculum Vitae. 

Chicago Office

RICHARD D. SBARBARO is Chairman of Lauer, Sbarbaro Associates • EMA Partners International, an executive search organization. He has conducted over 1,400 senior-level search assignments including industrial, commercial, financial services, consulting, technology, healthcare and the academic/not-for-profit sectors. He has advised clients nationally on issues of Organization and Compensation, and has provided valued counsel to senior management regarding Executive Appraisals and Management Evaluation. Mr. Sbarbaro has been retained by attorneys for plaintiff and defense.

Areas of Expertise:  Executive Search, Compensation, Employability and Earnings Capacity

 View Curriculum Vitae. 

Tampa Office
413 West Palm Drive
Lakeland, FL 33803
T: 863-687-3388 F: 863-687-3388

THOMAS S. TILGHMAN  has more than 40 years of senior consulting and management experience in Compensation, Executive and International Compensation. He currently provides compensation consulting related services through Tilghman Associates LLC. He has conducted compensation and human resources related projects in a wide variety of industries including high tech, pharmaceuticals, banking and oil industry. He has worked with start-ups to Fortune 100 companies.

Areas of Expertise: Executive Compensation, Executive Pay and Benefits, Outplacement, Career / Vocational Assessment, Earnings Capacity, Employability

 View Curriculum Vitae.

Dr. Christopher A. Lowery, DHSc, CLCP, is an international Clinical Health & Rehabilitation Consultant with a special interest in global health initiatives. He is board-certified as a life care planner practitioner specializing in health promotion and prevention through the use of holistic, evidence-based approaches using a biopsychosocial health consultation model for all patients/clients that suffer from associated disabilities and health impairments.

Since 2002, Dr. Lowery passion has been to educate, empower, and provide hope to individuals with catastrophic health impairments. He focuses on educating and counseling patients/clients on improving their quality of life, addressing social, cultural, and behavioral barriers across diverse populations impacted by poor healthcare conditions. 

He currently holds the following degrees: Bachelor of Science in rehabilitation studies from University of North Texas (07), Master of Arts in human and health administration services from University of Oklahoma (10), Post-Specialty Certificate in life care planning from Capital University Law School (12), Post-Master's Certificate in rehabilitation counseling from University of Arkansas at Little Rock (14), and Doctor of Health Science in global health from Nova Southeastern University (16).

Dr. Lowery holds a board certification in life care planning as a Certified Life Care Planner (CLCP) from the International Commission on Health Care Certification (ICHCC), which is accredited and recognized by the American National Standards Institute National Accreditation Board (ANAB). This prestigious certification attests to his qualifications and competence in healthcare delivery systems. ANAB’s accreditation ensures that the certification process meets rigorous international standards, confirming his aptitude and expertise for his role as a practitioner.

**If you have a case needing Dr. Lowery's expertise, please feel free to call his office for a free consultation.

Note: Please see below our website for more areas of expertise. 

Areas of Expertise:

View Christopher Lowery's Consulting Profile.

Beth De Lima, MBA, SPHR-CA. consults with Plaintiff and Defense attorneys in regard to human resource management, the American with Disabilities Act (ADA), Family Medical Leave Act (FMLA), discrimination and related topics.

Ms. De Lima is nationally certified as a Senior Professional in Human Resources with a California specific certification (SPHR - CA) by the Society for Human Resource Management (SHRM) and was appointed to sit on the Employee Health, Safety, and Security Special Expertise Panel, 2006-2010. She is a certified mediator, U.C. Berkeley, Extension Program and had been appointed to the Amador, Calaveras, and Tuolumne County Superior Court Mediation Panels. Specifically, Ms. De Lima can assist you in preparing responses and compiling evidence for existing cases. Her litigation support services may be used to:

• Formulate questions for depositions
• Conduct investigations and interviews
• Evaluate the adequacy of personnel policies
• Analyze evidence and presentation materials
• Identify case weaknesses and alternative strategies
• Document employee physical suitability for work
• Determine "reasonable accommodation"

Please visit her website at www.hrmconsulting.com for more details. Ms. De Lima has offices in Murphys and San Jose California and are available at your convenience to discuss cases on a confidential and complimentary basis.

View Consulting Profile.

Arnold J. Weil, MD has over 29 years of experience specializing in Non-Surgical Orthopaedics and Pain Management. A Diplomat of the American Board of Physical Medicine and Rehabilitation and Chief Executive Officer of Non-Surgical Orthopaedics, P.C., one of the premier orthopaedic practices in the metro Atlanta area. 

Dr. Weil's practice focuses on conservative, non-surgical care of orthopaedic injuries, including the spine and extremities, with emphasis on spine rehabilitation, functional restoration, pain management, and ergonomic modifications. He treats patients with back and neck pain and a variety of other orthopaedic conditions. Managing acute and chronic pain through an advanced Non-Surgical approach, Dr. Weil has become one of the leading experts on Spine Care and Disability Management.

Video: Non-Surgical Orthopaedics, P.C. | The Overview

Litigation Support - Arnold Weil provides litigation support services to attorneys representing plaintiffs and defendants. He has maintained an unbiased reputation in the medical and legal community. Dr. Weil's experience includes over 300 depositions, medical-legal reviews, peer reviews, and trial appearances. 

Areas of Expertise:

View Dr. Weil's Consulting Profile.

Ray S. Kim, Ph.D., is a Licensed Clinical Psychologist and Board Certified Forensic Psychologist. Dr. Kim is also a Board Registered Mental Illness / Substance Abuse Provider, Diplomate of the American Psychotherapy Association, Diplomate of the American Board of Psychological Specialties, Fellow of the American College of Forensic Examiners Institute, and Fellow of the American College of Advanced Practice Psychologists. 

Dr. Kim is currently the Director of Chicago Metropolitan Forensic Services at the Illinois Department of Human Services where he supervises a team of clinical psychologists and social workers who evaluate the placement of individuals into forensic facilities. He also serves as the Director of Clinical Training at Chicago Metropolitan Forensic Services where he developed and supervises a forensic practicum program which provides opportunities for specialized clinical training in the area of forensic psychology. 

Litigation Support - Dr. Kim has testified in over 50 cases in both criminal and civil court proceedings. He is sensitive to the nature of legal matters, and provides comprehensive, timely, and professional services. Dr. Kim's services are available to attorneys or defendants seeking a qualified evaluator to help support a case, or wishing to obtain a second opinion on a legal matter already in progress. He is skilled in utilizing the field of psychology's most up-to-date assessments to provide recommendations for prosecution or defense teams. 

Areas of Expertise:

• Psychological Evaluations
• Pre-Sentence Evaluations
• Sex Offender Evaluations
• Violence Risk Assessments
• Competency to Waive Miranda Rights
• Diminished Capacity
• Fitness for Duty Evaluations
• Substance Abuse Assessments
• Independent Medical Examinations (personal injury, workers' compensation, disability determination, malpractice)
• Detection of Malingering
• Federal Evaluations (competency to stand trial, criminal responsibility)

View Dr. Kim's Consulting Profile.

As a highly professional & credible Expert, Consultant, & Speaker, Jean Seawright has provided trusted advice & HR Consultation to thousands of organizations nationwide. As president of Seawright & Associates, a Human Resource Management-Consulting Firm, Ms. Seawright is widely respected for her knowledge of state & federal employment regulations including, but not limited to FLSA, ADA, FMLA, Title VII, & others.

Since 1987, she has focused on engagements involving hiring, coaching, & terminating employees; regulatory compliance; charges of discrimination; performance management systems; internal investigations (including harassment); employee handbook development; compensation plan design; HR audits; hiring systems; job descriptions; & others. Ms. Seawright is a frequent speaker at state & national trade associations & is the author of numerous articles & publications in the field of human resources, including the popular book, The Employment Genie®, an exclusive hiring, coaching, & termination system for businesses. 

Areas of Expertise:

• Negligent Hiring and Retention
• Discrimination and EEO Compliance
• HR Policies and Programs
• FLSA and Wage and Hour Compliance
• Harassment
• Expert Witness Services for Employment Law Matters
• ADA
• FMLA
• Hiring Procedures
• Title VII
• Employee Handbooks

Ms. Seawright is available for case analysis, case theory evaluation, expert witness reports, depositions, analysis of other expert testimony, and trial testimony.

Continental Who’s Who 

Executive Press Release

WILLEAM A. CHOBY, DMD - DENTIST. FOUNDER

Greensburg, PA - Prominently featured in Continental Who's Who, Willeam A. Choby, DMD is acknowledged as 2025 Dentist of the Year for his contributions to Dentistry.

Dr. Willeam A. Choby,  a renowned dental professional in implant dental surgery and reconstruction of the teeth continues to make significant strides in the field of dentistry. With a career dedicated to advancing oral health, Dr. Choby is integrating his extensive clinical expertise with innovative public health principles to improve patient outcomes and community well-being.

Dr. Choby received his Bachelor’s degree and Dental Medicine Doctor (DMD) from the University of Pittsburgh, followed by General Practice residency and appointment as Chief Dental Resident at Brookdale Hospital Medical Center in Brooklyn New York. He also earned a continuing education degree of Masters of the Academy of General Dentistry (MAGD) Complementing his dental credentials, he holds a Master of Public Administration (MPA), which enhances his ability to address oral health challenges through a public health lens. His master’s thesis “Licensure and the Dental Market” from Virginia Tech continues to stimulate the dialogue in the various state boards of dentistry.

Dr. Choby is an active member of the International Congress of Oral Implantologists (ICOI) where he earned a Diplomate degree (DICOI) and a Fellow in the International College of Cranio-Mandibular Orthopedics (FICCMO).

Dr. Choby is frequently called upon to provide his expertise on public health matters, second opinions,  peer review and malpractice questions.  He has testified in court over a dozen times and has participated in dozens of sworn depositions. 

A skilled clinician with a particular focus on dental implants and neuro muscular dental bite relations, Dr. Choby emphasizes a collaborative approach in his practice. "Teamwork between the dentist, patients, and their financial abilities along with other health professionals is essential for achieving optimal care," he explains. His patient-centered philosophy reflects his dedication to fostering trust and communication, ensuring each treatment plan is tailored to individual needs

View Dr. Choby's Consulting Profile.

Jeffrey M. Wilder, DC, DABCO, FICC, has over 42 years of experience as a Chiropractor, and 38 years in private Chiropractic Practice. Engaged in private family-oriented practice as a chiropractor in Madison, Wisconsin since 1981, Dr. Wilder has completed a post-doctorate program in chiropractic orthopedics from National College and is a Board Certified Chiropractic Neuromusculoskeletal Specialist, a Diplomate of the American Board of Chiropractic Orthopedists, and a Fellow of the International Academy of Neuromuscular Medicine. This program is successfully completed by less than 1% of the nation’s chiropractors. 

Dr. Wilder has also been certified by the American Chiropractic Association Sports Council as a Certified Chiropractic Sports Physician, a 120-hour certificate program dealing with sports training, and the treatment and prevention of sports injuries. He has completed state requirements in physiological therapeutics, surface EMG, and clinical nutrition, among others.

Dr. Wilder has also served as an officer on the Board of Directors for the Congress of Chiropractic State Associations, which commissioned the chiropractic profession’s first nationwide clinical protocol, known as, Guidelines for Chiropractic Quality Assurance and Practice Parameters: Proceedings of the Mercy Center Consensus Conference, 1993, Aspen Publishers, Gaithersburg, MD.  

A Past President of the 1,800 member Wisconsin Chiropractic Association, Dr. Wilder had one of the longest terms (6 years) in the 100+ year history of the organization. He currently serves as the representative for the chiropractic profession to the Wisconsin Medicare Carrier Advisory Commission.  He has also been a consulting expert to the state of Wisconsin's Worker's Compensation Division for the past 22 years.

Dr. Wilder has taught extensively to chiropractors around the country, providing continuing education. He has been a frequent spokesperson for chiropractic in the press, television and radio, including regular appearances on statewide Wisconsin Public Radio.

Litigation Support: Dr. Wilder has extensive experience over the past 29  years as a court-recognized Chiropractic Expert throughout the United States and Puerto Rico. Dr. Wilder has served as an expert in over 300 cases of alleged Chiropractic Malpractice, Motor Vehicle Accidents and Fraud Review.   He has reviewed and testified in court for both plaintiffs and defendants in cases involving chiropractic treatment, including claims of:

Forty plus years in the Transportation Industry as a professional driver, small fleet owner to a Director of Safety, Consultant and Expert Witness. Ensure compliance with the FMCSA, PHMSA, TSA and OSHA Regulations.

Review records and materials, provide verbal consultation, opinions, and provide deposition and trial testimony when needed. Review records to screen potential cases for merit and identify case strengths. Provide verbal consultation to clients, unpacking complex concepts.