The issue of typical lexical errors, which negatively affect the effectiveness of the communicative activity of specialists in the field of tourism and social security, is outlined. Along with the violation of other norms of the modern Ukrainian language, the use of lexical errors is the most frequent phenomenon in the speech of future specialists in the field of tourism and social security. The specified lexical errors of future specialists in the field of tourism and social security impoverish their speech, negatively affect the formation of specialist competencies, the creation of subject-subject relationships between communicators, and spoil the image not only of the future specialist, but also of the institution or organization. in which such a specialist works, because this is a manifestation of a low level of language culture. The most used violations at the lexical level of the modern Ukrainian literary language are determined. Recommendations for overcoming frequently used mistakes in the communicative activity of specialists in the field of tourism and social welfare are formulated and presented: do not combine several speech styles; read / view / listen to Ukrainian-language content in the relevant field; monitor the correct use of words that belong to the professional vocabulary; do not use unfamiliar terms or those that have a specific meaning in a certain field; work on expanding the vocabulary: the more words a person knows, the less lexical mistakes you will make in the text; make notes with own lexical errors, in order to eliminate them; introduce mandatory practical trainings that will allow you to visually examine typical speech errors and practice correct speech in situations close to real ones; follow the use of modern standards of literary language and communicative quality features of language culture in one's own speech. One of the priority tasks is to overcome the low level of language culture, to eradicate lexical errors from the active vocabulary of a specialist in the relevant field, as well as to increase the level of proficiency in the modern Ukrainian language among specialists in the field of tourism and social welfare, with the aim of developing their systematic knowledge of the language, its norms, rules and patterns of functioning in these spheres of professional activity, since the use of lexical errors in the speech of specialists in the field of tourism and social security is a negative factor in their effective communicative activity.