This paper presents the results of a study on HACCP knowledge among catering staff. The study involved 100 people working in catering establishments randomly selected, such as restaurants, bars and cafes. The research tool was a survey questionnaire. The results indicate an insufficient level of knowledge of the respondents and indicate the need for training in the principles and significance of the HACCP system among people working in the catering industry. Since their knowledge is highly dependent, functioning of the HACCP system in the catering establishment seriously depends on their knowledge which is reflected in the quality and safety of food produced.