Companies aim for a high usability of their products, as a higher usability increases profit, reduces costs, retains existing users and attracts new users. To reach this aim, it is necessary to include the needs and requirements of (already existing and prospective) end-users in the design process, this approach is also known as user-centered-design. This approach ensures that all users can use the system equally well and is therefore the central issue of this master thesis, which was be accomplished in the context of the project GE:MMaS1 at the department of Labour Science and Organization at the Institute of Management Science of the Vienna University of Technology. In this master thesis, the user requirements of computer-controlled laser engraving systems were evaluated. The data for this survey were collected in focus group discussions with users of Trotec Lasers systems. Altogether three group discussions took place, each with a different kind of user groups - female operators, male operators and supervisors. The aim of this analysis is to determine differences between the different user groups. To raise the grade of objectivity of the analysis, two investigators evaluated the collected data. The content of the focus group discussions were recorded by dictaphones and cameras and transcribed. This transcription provided the basis for a content analysis, where the data was evaluated systematically. The data was unitized into units of sense and allocated into a category system, which was developed theory-driven as well as according to the material.