[en] The potential risk by being exposed by artificial UV-sources at the workplace in Austria was measured and evaluated. A representative overview of the measurement results, the evaluation of the UV-exposure risk and recommendations to reduction of the risk is given. The international organizations ACGIH and ICNIRP have promulgated guidelines on exposure to ultraviolet radiation (UVR), to protect the general public and workers from hazards which result from being exposed to UVR sources. As the two guidelines differ in some definitions of the exposure duration to calculate the radiant exposure, different results may be obtained. Further it is possible to use the concept of minimal erythema doses - MED's in order to analyze the ability of UV radiation to produce erythema in the human skin. The differences have been analyzed by using the ICNIRP and ACGIH guidelines and the concept of MED's. The different results were compared and discussed. Measurements of UV-radiation concerning photobiological hazards were performed with spectral or integral methods. To increase the accuracy of the measurement a wavelength-dependent correction factor for the integral detectors was used. For simplified handling, the correction factors were classified into different spectra, lamp groups respectively. (author)