Diversity among civil service employees, affirmativeaction, and workplace discrimination continue to be salient and potentially dynamic issues for public sector human resource managers. In an effort to better understand a fast-growing but rarely studied subgroup of the public workforce, this study compares Mexican American managers’ perceptions of affirmative action and workplace discrimination to those of their White and Black, non-Hispanic peers. Data for this study come from two large Southwestern U.S. cities, Phoenix, Arizona, and San Antonio, Texas. Results from bivariate and multivariate analyses show that managers, as a collective group, do not believe affirmative action policies and workplace discrimination have affected advancement. However, when the data are disaggregated and reexamined by race or ethnicity, significant differences of opinion emerge. The authors find evidence that Mexican American managers perceive affirmative action policies and workplace discrimination differently than their peers.