This paper examines people’s awareness of honorific expressions for things and “-(eu) silgeyo,” which is an excessive honorific expression found in the speech of service sector workers. It also analyzes the pragmatic and social contexts of the use of these honorifics. To this end, first, questions about honorific expressions for things and “-(eu) silgeyo” posted on the online bulletin board of the National Institute of Korean Language were analyzed. Second, a questionnaire survey was undertaken by 472 people, and focus group interviews were conducted with two workers in the education service industry. The results of the surveys and interviews allowed the identification of the problems associated with these excessive honorific expressions and the exploration of the educational implications in resolving these problems. Examination of peoples’ awareness of excessive honorific expressions of service sector workers has revealed the following implications. It was observed that the honorific expressions for things and “-(eu) silgeyo” that appear in the speeches of service sector workers are not part of a phenomenon of general language that is manifested in people’s daily lives. Rather, they are distinct language phenomena that have been seen only in the speeches of some service workers. This is an error that occurs when these workers try to show excessive respect to those who have greater financial capabilities or higher social status. Therefore, if people simply accept such language expressions without a critical consciousness, differences in speech will be consolidated according to social class and a style of speech that prioritizes capital, thereby hindering the establishment of a language culture of mutual respect. In addition, instead of simply pointing out the normative error in the use of excessive honorific expressions by service workers or accepting this as a natural shift in language due to social changes, we need to analyze the social factors that demand excessive honorific expressions and change the direction of education so that solutions to these problems can be discovered. Financial capability or power relations should never undermine the principle of mutual respect in language. In this context, it is necessary to create education programs that clarify the inappropriateness of excessive honorific expressions.