Labour conditions of persons working with personal computers, videodisplay terminals and сорying devices are studied, in this case the effect of a variety of physical production factors and attendant chemical noxious substances on users is revealed. Discrepancies with sanitary standards and regulations on electromagnetic fields, illumination, ventilation, equipment location, air production medium composition are found. According to sanitary service instructions the works on rational construction of ventilation and conditioning, air, equipment grounding, illumination reconstruction, working place locations, monitor changing are performed. It is emphasized that control over labour conditions of users of personal computers and persons working with copying devices should be one of principal lines in the work of specialists on occupational hygiene.