The Workplace Outcome Suite (WOS) is an easy-to-administer tool developed by Chestnut Global Partners (CGP) Division of Commercial Science. It uses a short, precise, and easy-to-administer survey that collects EAP specific outcome data both before (pre – at start of the counseling) and after (post – usually after 3 months) EAP services. Thus, the WOS is a measure of change that examines five key aspects of workplace functioning: absenteeism, presenteeism, work engagement, workplace distress, and life satisfaction. The WOS is currently the only publicly available, free instrument that has been psychometrically validated and tested for use in EAP settings. See the 2016 WOS Report for a discussion of how it is administered, basic calculation methods for change over time, and the history of the development of the full 25-item, 9-item and brief 5-item versions.