Employment discrimination claims often hinge on the admissibility of evidence. A plaintiff bringing an employment discrimination claim may, for example, offer into evidence testimony from other employees who also believe they were victims of discrimination. Such evidence is referred to as “me too” or propensity evidence and has been a subject of debate among litigants. Be it discrimination based on age, gender, or another protected class, propensity evidence can be powerful if admissible.
As background, Federal Rule of Evidence 404(b)(2), which is virtually identical to the Massachusetts corollary, provides that evidence of a crime, wrong, or other act “may be admissible for another purpose, such as proving motive, opportunity, intent, preparation, plan, knowledge, identity, absence of mistake, or lack of accident.” Because motive, intent, and state of mind are directly at issue in employment discrimination claims, “me too” or propensity evidence may be properly admitted under these rules under certain circumstances. Other relevant portions of the Rules of Evidence with respect to “me too” or propensity evidence include FRE 401 (Test for Relevant Evidence) and FRE 403 (Excluding Relevant Evidence for Prejudice, Confusion, Waste of Time, or Other Reasons).