“…NPOs rely on effective, committed volunteer workforces to achieve their missions. In accordance with this need, exacerbated by the continually decreasing trend of volunteerism in the USA (Bureau of Labor Statistics, 2016), previous work has focused largely on concepts that help explain the length of volunteer service, such as satisfaction, organizational commitment, and intentions to quit (Allen & Mueller, 2013;Cnaan & Cascio, 1998;Miller, Adair, Nicols, & Smart, 2014). Recently, volunteer literature has acknowledged the role of engagement as another aspect which may help explain the influence of volunteers' experiences on subsequent attendance outcomes (Alfes, Shantz, & Bailey, 2015;Harp, Scherer, & Allen, 2016;Huynh, Xanthopoulou, & Winefield, 2014;Malinen & Harju, 2016).…”