Slips, failures and errors can initiate and foster learning processes. However, this depends on several factors as the error-culture in the training company, job design, personal characteristics of the learner, or an adequate support of the trainer. Quite often the first reaction is to cache errors and failures. It must be learnt to learn from errors. Apprenticeship in Switzerland is company based and many (very) small and medium sized companies offer apprenticeships. Only limited systematic knowledge on the “error-friendliness” in the learning process of these companies is available. Apprenticeship training is the predominant form of upper secondary education in Switzerland (Stalder & Nägele, in prep.). In this paper, results from two surveys are presented. Apprentices (N = 2000) from different branches and different companies were asked about the reactions of their trainers (and also teachers at school) to an error. This indicator of error-culture related to the learning process shows, whether there is at all a chance to learn from errors.  This error-culture is discussed in relation to the job design, (social) support in the company and personnel characteristics of the learner.