On the basis of a questionnaire survey of 119 commercial sex workers there have been identified data concerning the sexual behavior of the probands in the course of carrying out paid sexual services. On the basis of the results obtained it can be stated that in the field of professional sexual behavior of the investigated series of prostitutes they on the average have 9.8 clients week, intercourse with one client lasting 17 minutes. In all, 15% of them also mentioned commercial intercourse with women. The most frequent sexual activities of prostitutes within the framework of performing their profession are vaginal intercourse, fellatio,andmasturbation of the client. Up to 92% of the respondents mentioned that during intercourse they consistently use a condom, however, three quarters of them have experiences the bursting of a condom. Nevertheless, the majority of the respondents do not know what to do in such a situation properly. Although up to three fifths of them use lubricating gel, it is mostly not with the intent of preventing sexually transmissible diseases. The majority, 61% of prostitutes sometimes experience sexual arousal during intercourse with a client and 46% of them had an orgasm some time. Nevertheless, only a small minority, about on tenth of them, in the execution of their profession, experience arousal or orgasms more often.

        Key words: prostitutes - commercial sexual activities - characteristics.