45 C.F.R. § 90.16 Burden of proof.
Title 45 - Public Welfare
The burden of proving that an age distinction or other action falls within the exceptions outlined in §§90.14 and 90.15 is on the recipient of Federal financial assistance.
Title 45: Public Welfare
PART 90—NONDISCRIMINATION ON THE BASIS OF AGE IN PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE
Subpart B—What is Age Discrimination?
Standards for Determining Discriminatory Practices
§ 90.16 Burden of proof.