PurposeThis study aims to investigate the growing use of financial metrics (such as return on investment [ROI]) to measure performance and evaluate human capital (HC) investments.Design/methodology/approachThe research employed an embedded case study approach, examining how one ROI approach was applied to evaluating HC investments, across three sectors (corporate, public health and international development).FindingsThree major findings emerged in this study: First, interpretations of ROI can lead to ambiguity during implementation. ROI is interpreted trichotomously – metaphorically, as a desire for value; literally, as a metric; and procedurally, as a method for planning and evaluating HC investments. Second, understanding, measuring and tracking the domains of people performance (cognitive, affective and psychomotor) is vital to evaluating the impact of HC investments because this is where the change in behavior occurs. Third, although the logic model measures the change in process following an intervention (input-activity-output-outcome-impact), other approaches measure the change in behavior of people in the intervention (people performance).Practical implicationsThese findings provide clarity for practitioners about challenges when applying ROI.Originality/valueThis is the first study to explore how the ROI financial metric is applied in a new domain by first examining its interpretation. It elucidates the use of ROI in practice, as well as the different purposes of key ROI approaches.

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Despite the considerable concentration on sustainable supply chain management (SSCM) among manufacturing organizations, Iranian manufacturing companies are still in the initial stage. Due to significant development in manufacturing industries in Iran, environmental concerns have become the highest concerns for stakeholders. SSCM practices have a straightforward linkage with environmental performance. Consequently, this question was raised that what are the impacts of adopting SSCM practices on environmental performance (EP) in Iranian manufacturing companies? According to the results of this study, the following outcomes have obtained: there is a positive relationship between sustainable purchasing and sustainable logistics and internal environmental management (IEM). On the contrary, sustainable production and sustainable design have not a significant relationship with IEM. In addition, the findings indicate the positive and significant effect of SSCM practices on EP.