Minimal research has focused on the social dimension of sustainability in the built environment especially as it relates to the construction workforce. As a result, there are few to no tools available to industry stakeholders to holistically assess and improve the social sustainability of the construction workforce. Given the high employee turnover rates and shortage of skilled workers in the construction industry, there is a paramount need to develop reliable and practical tools to assess and improve the social sustainability of the construction workforce. Being able to frequently assess and improve social sustainability at the workforce level will assist construction organizations, and ultimately the entire construction industry, develop, attract, and retain skilled workers. The overreaching goal of this research is to enable assessing and improving social sustainability in construction at the workforce level. To achieve the research goal, the attributes, indicators, and metrics influencing the social sustainability of the construction workforce were identified, categorized, and quantified. By integrating the identified attributes, indicators, and metrics into an evaluation procedure, a practical tool to assess and improve social sustainability of the construction workforce was developed. The developed tool is referred to as the workforce sustainability assessment tool (W-SAT). The present research contributes to the body of knowledge by fulfilling the industry need for an instrument to assess and improve the social attributes of the construction workforce.