Employment expert witnesses

Expert class library · 4 classes

The statisticians, economists and psychologists in discrimination and wage cases: disparate impact, wage-and-hour damages and selection procedures.

Each class is defined by role and method, never by a person or a firm. Open one for what its testimony turns on, how it is attacked, and the rulings, each summarised from the opinion and linked to it.

Usually retained by plaintiffs

Disparate-impact labor statistician

Multiple regression of pay or promotion · Standard deviation analysis

Wage-and-hour damages expert

Representative sampling · Time and motion study

Usually retained by the defense

Defense labor economist

Disaggregated analysis by decision unit · Omitted variable testing

Retained by either side

Industrial-organizational psychologist

Test validation study · Job analysis

Recent rulings

The 9 most recent of 12 rulings in this practice, newest first. Each links to the free opinion on CourtListener and to the class it belongs to.

Outcome	Case	Court	Expert class
Admitted	Senne v. Kansas City Royals Baseball Corp.934 F.3d 918	9th Cir. 2019	Wage-and-hour damages expert
Excluded	Campbell v. National Railroad Passenger Corp.311 F. Supp. 3d 281	D.D.C. 2018	Industrial-organizational psychologist
Limited	Moussouris v. Microsoft Corp.311 F. Supp. 3d 1223	W.D. Wash. 2018	Defense labor economist
Exclusion reversed	Karlo v. Pittsburgh Glass Works, LLC849 F.3d 61	3d Cir. 2017	Disparate-impact labor statistician
Admitted	Equal Employment Opportunity Commission v. Texas Roadhouse, Inc.215 F. Supp. 3d 140	D. Mass. 2016	Defense labor economist
Excluded	Senne v. Kansas City Royals Baseball Corp.315 F.R.D. 523	N.D. Cal. 2016	Wage-and-hour damages expert
Admitted	Tyson Foods, Inc. v. Bouaphakeo577 U.S. 442	U.S. 2016	Wage-and-hour damages expert
Admitted	Chen-Oster v. Goldman, Sachs & Co.114 F. Supp. 3d 110	S.D.N.Y. 2015	Disparate-impact labor statistician
Admitted	McReynolds v. Sodexho Marriott Services, Inc.349 F. Supp. 2d 30	D.D.C. 2004	Disparate-impact labor statistician

Other practice areas

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The library summarises public decisions for orientation; it is not legal advice. Read the opinion before relying on any ruling. No individual expert is named.