The intergeneration transfer of technical and professional knowledge within the Tunisian banking system thanks to the training on the job belongs to the traditional culture of the financial sector. This kind of archaic training, it hasn’t disappeared. The Tunisian banks have as well already integrated new and modern ways of training. The international comparison with German banks allows to underline the external recruiting of young graduated people from universities. Moreover, and despite the fact that the Tunisian banking system is following the German training example which is due to lead to more synergies between employees and hierarchy, we notice that the internal culture is deteriorating more and more because of the introduction of managing practises which only take into account the maximisation of the banks profit abilities. In a context of renew generation and opening to the international competition, the management introduce new management practices and want to change the internal culture with keeping this technical and professional knowledge to permitting a codification.