“…Informal learning is often discussed in contrast to formal learning (Marsick and Watkins, 2001): It can be described as less restricted in terms of learning support, learning context, learning time, and learning objectives (Kyndt and Baert, 2013). Informal learning is embedded in daily work-related activities and is learner-initiated, without an intervention of an instructor (Livingstone, 2001;Noe, Tews, and Marand, 2013;Wolfson et al, 2017). Different types fall under the heading of informal workrelated learning: interpersonal learning, intrapersonal learning, and learning from non-interpersonal sources (Choi and Jacobs, 2011;Lohman and Woolf, 2001;Noe et al, 2013).…”