This article details an approach for empirically eliciting and examining public service values and their impact on decisions made by public servants. The approach involves adaptation of the Schwartz Portrait Values Questionnaire such that it: (1) elicits values relevant to an individual's public service role rather than broad personal values; and (2) incorporates values omitted by the Schwartz framework, including those identified by Jørgensen and Bozeman and others. To examine the impact of public service values on specific public management decisions, we use structured decision context statements similar to those proposed by Tetlock. We find that: (1) the adapted instrument maps favourably to the Schwartz personal value space; (2) the public service values space includes value sets that expand and refine the personal value space defined by Schwartz; and (3) the public service values elicited can be used to predict decisions made by respondents in specific public service decision contexts.