Purpose The aim of this study was to determine the effect of coronavirus disease 2019 (COVID-19) prevention methods training given by distance learning technique on the state anxiety level of the workers of a company serving in the communication sector. Design/methodology/approach The sample of this experimental and cross-sectional study consisted of 52 people working in the communication sector. Data were collected using a questionnaire and the state anxiety inventory. Data were analyzed using descriptive statistics, t-test, variance analysis, Kruskal-Wallis, Mann-Whitney U and Tukey's test. Findings While the state anxiety scores of the workers working in the communication sector were 47.94 +/- 4.90 before the training, they were found to be 43.98 +/- 5.20 after the training. Research limitations/implications As in every study, this study has some limitations. Although a homogeneous sample is tried to be formed since it only covers this group, it should be considered that there is a limitation in terms of generalizability. In addition, the fact that the knowledge score is not measured and the relationship between the knowledge score and the anxiety score is not evaluated should be considered as a limitation. Finally, it is also a limitation that the questionnaire form, which includes measurement tools, is applied online. It is thought that measuring errors can be minimized if questionnaires are applied face to face. Practical implications The results of the study showed that the training given to the workers in the communication sector contributed positively to the reduction of anxiety levels. It is important to provide training and support to those with high anxiety levels. After providing effective protection for nurses/midwives under pandemic conditions and preventing their uncertainties, they can contribute to the reduction of anxiety levels by providing training to individuals who serve the society. It is recommended to plan health trainings for the anxiety of other sector workers serving the society and to focus on these groups. Thus, the effective protection of individuals and their service quality will increase and their anxiety may decrease. Originality/value Informative support from nurses/midwives can make it easier to control anxiety arising from the COVID-19 pandemic. The results are important in order to draw attention to the anxiety of other sector workers serving the society and the importance of informative roles of nurses. In order to reduce the anxiety levels of workers in different sectors, it is recommended to conduct more supportive training activities and to draw attention to the workers serving the society.