CFR > Title 10 - Energy > CHAPTER X—DEPARTMENT OF ENERGY (GENERAL PROVISIONS) > PART 1040—NONDISCRIMINATION IN FEDERALLY ASSISTED PROGRAMS OR ACTIVITIES > SUBPART E—Nondiscrimination on the Basis of Age—Age Discrimination Act of 1975, as Amended (§1040.81 to §1040.89-13) > 1040.89—Burden of proof.