Purpose: This study aims to investigate the factors that can influence the transfer process of training in open skills, i.e. non-technical skills (NTS). Specifically, according to the model of the transfer process, the aim of this paper is to analyse the effects of both personal (e.g. self-efficacy) and work environment (e.g. safety leadership styles) antecedents of intention to transfer. Design/methodology/approach: A total of 88 workers belonging to two different plants of the same chemical company filled in a questionnaire at the beginning (T1) and at the end (T2) of the training intervention. The majority of the sample was composed of men (95.5 per cent), with the mean age being 45.19 years old, and they had worked in the same company for an average of 17.2 years. Personal (self-efficacy) and organizational (transformational and passive leadership) factors were measured at T1, while intention to transfer was measured at T2. To investigate the combined effect of both personal and environmental characteristics on the transfer process, a moderation analysis was conducted following the Preacher and Hayes approach. Findings: Results showed that all the antecedents investigated (except for passive leadership) impacted on the intention to transfer. Furthermore, high levels of self-efficacy combined with higher levels of transformational leadership resulted in higher levels of intention to transfer. Research limitations/implications: The sample size is quite small, and effective transfer of NTS has not been measured. Practical implications: Results suggest that organizations should focus on fostering self-efficacy of the trainees and transformational leadership of the supervisors so as to facilitate the transfer process of NTS. Originality/value To the best of the authors' knowledge, this is the first study which has considered both individual and contextual characteristics to analyse the transfer process of NTS.