One hundred and fifty-two court cases were reviewed to determine the standards set by the courts for establishing a claim of age discrimination under the Age Discrimination in Employment Act, as amended. Fifty-three are discussed. Two major issues were examined in Part 1 of the review: (1) the type and extent of the evidence sufficient to establish a complaint of age discrimination and (2) available defenses against age discrimination complaints. Part 2 discussed employer strategies for averting and/or dealing with discrimination complaints. Also discussed were the research-related implications of the age discrimination case law, as well as the role of professionals in future research.