ABSTRACT:The paper informs about partial results gathered and processed in the framework of the international research project "Learn for Work", Leonardo da Vinci programme. The goal of the research project was to acquire information about the subjective perception of importance and subsequent use of theoretical knowledge in practical use in the forest worker occupation. The research, monitoring the practical need of theoretical knowledge of workers in the forest, was realized in selected six countries of the European Union -Belgium, Austria, France, Finland, Germany and Czech Republic. Another objective of this research was to find out whether there are significant differences in opinions concerning the need of theoretical knowledge in respondents from the individual countries. Partial results presented in the paper relate to the measure of practical need and use of theoretical knowledge in physics for the occupation of forest worker. The acquired data are interpreted and discussed in the context of analogical research studies implemented abroad as well as in the Czech environment.