“…The influence of supervisors is exerted in part through supportive behaviors. Supervisory support is all the more important for newcomers' work adjustment that the entry period is characterized by uncertainty (Ellis et al, 2015;Jones, 1986;Miller & Jablin, 1991). Due to frequent interactions with employees, supervisors are primary sources of support perceptions (Maertz Jr, Griffeth, Campbell, & Allen, 2007), and as they represent the organization (Eisenberger, Stinglhamber, Vandenberghe, Sucharski, & Rhoades, 2002), such support likely drives organizational commitment (e.g., Casper, Harris, Taylor-Bianco, & Wayne, 2011;Ng & Sorensen, 2008).…”