“…In addition to the basic roles and services involved, voluntary services that are not specified should also be provided in order to ensure high-level customer satisfaction. This behavior forms part of the organizational role of service providers; accordingly, considerable emphasis is placed on prosocial service behavior that includes both specified and non-specified role behaviors (Ackfeldt & Malhotra, 2013;Eren, Burke, Astakhova, Koyuncu, & Kaygısız, 2014). Employees who engage in service encounters perform such roles and services at their discretion; the behaviors of these internal employees not only decide the quality of the service products but also affect customer satisfaction, business performance, and organizational growth (Boshoff & Gray, 2004); therefore, prosocial service behavior is vital (Baik & Yom, 2012).…”