The presented factor loadings are standardized using latent variable standardization (Std.lv). L1 = Level 1; L2 = Level 2; ILA = informal learning activity; refl = thinking/reflection; reth = rethinking/thinking old problems in a new way; trial = try out/trial and error; exch = professional exchange/co-working with colleagues; feedb = searching for feedback; shar = sharing knowledge; obs = observing colleagues; sup = exchange with supervisor; tut = watching videos/tutorials; ask = asking questions digitally; read = reading books/journals/learning material; int = searching the internet. All factor loadings were significant (p < 0.001)