Training and development programs are strategic in organizations, as they offer the opportunity to promote and consolidate technical and behavioral skills of employees, improving their performance at work (Grossman & Salas, 2011; Salas, Tannenbaum, Kraiger, & Smith-Jentsch, 2012). Regarding these benefits, allied with the widespread technologies and cost reduction, organizations more often consider distance learning to be a viable alternative for offering their training to employees (Bedwell & Salas, 2010). Since online training has become generalized in both organizational and training fields, using platforms such as Coursera or Edx, specific studies that contribute to the investigation of the acquisition and transfer of skills in this type of training should be conducted (Salas et al., 2012). This paper contributes to training literature by analyzing online training in a large corporate context and its impact on workers' performance, considering mediation and moderation mechanisms. Although e-learning become a dominant method of delivering training in work environments (DeRouin, Fritzsche, & Salas, 2005), virtual instructional resources do not guarantee learning itself. Online learning environments present particularities that must be identified to allow proposals for more effective interventions. Some of these h t t p s : / / j o u r n a l s. c o p m a d r i d. o rg / j wo p