The quality of work and product of in today’s free-enterprise competition is more significant than ever before, but eventually it is even legally required e.g. in medicine or in the food industry. To reach the a firm’s objectives an economically better way incrementally more and more use of quality management is made – measures to improve working processes and therefore increase the efficiency of working and business processes. An increasing number of firms today uses modern systems such as the EN ISO 9001:2000. The auditor’s job is to check the work of the system, which has to reveal quality endangering risks i.e. risks which lead to violation of job obligations. It is also the auditor’s job to assess, whether and to what extent the system is appropriate and whether and to what extent it should be modified.