We study the effects of affirmative action at an elite Brazilian university that adopted race- and income-based quotas for 45 percent of its admission slots. We link admission records to national employer-employee data to examine how the policy affected the careers of both its targeted beneficiaries and the university’s other students. For students admitted through affirmative action, the policy led to a modest increase in early-career earnings that faded as their careers progressed. Conversely, the adoption of affirmative action caused a large and persistent decrease in earnings for the university’s most highly ranked students. We present evidence that these negative earnings effects are driven by a reduction in human capital accumulation and a decline in the value of networking.

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