45 CFR § 1156.2 - Application.
(b) The Age Discrimination Act of 1975 does not apply to:
(ii) Establishes criteria for participation in age-related terms; or
(iii) Describes intended beneficiaries or target groups in age related terms.
(2) Any employment practice of any employer, employment agency, labor organization, or any labor-management joint apprenticeship training program, except for any program or activity receiving Federal financial assistance for public service employment under the Job Training Partnership Act (JTPA).