The costs and benefits of training are central factors for companies deciding for or against an own company-internal training department. The Federal Institute for Vocational Training (Bundesinstitut für Berufsbildung - BIBB) has conducted its fifth survey of over 3000 training companies and more than 900 non-training companies on costs and benefits of company-internal training, the employment of trainees after training completion and on training motivation for the training year 2012/13. The results of the survey are presented separately for eastern and western Germany, training fields and years, as well as company size classifications and professions. Extensive analyses inform about company-internal decision factors. The BIBB has been monitoring and analysing training decisions of companies with regards to economic aspects since 2000. This volume is the first to include a comparison of the three surveys between 2000 and 2013. Gudrun Schönfeld, Anika Jansen, Felix Wenzelmann und Dr. Harald Pfeifer sind (wissenschaftliche) Mitarbeiter im Arbeitsbereich 'Kosten, Nutzen, Finanzierung' des Bundesinstituts für Berufsbildung.