Purpose: This study was performed to establish the effective hearing conservation program for noisy industries. Methods: A total of 100 employees who were working in noisy environments participated. Subjects were divided into four groups according to the size of firms and the periods of noise exposure. A 12-question survey related to factors of the hearing conservation program was designed and assessed. Results: Results showed that all participants perceived the importance of hearing conservation. There were significant differences among four groups in the awareness level of the importance of hearing protection. Employees who were working at a big firm and had more than ten years of noise exposure experiences were more aware of factors related to hearing protection than others. Conclusion: Awareness of the hearing protection of hearing protection needs to be the most important factor in establishing and operating hearing conservation program. Further research should be considered in light of the outcome of this study.