This study investigated the effects of myofascial release therapy and massage on upper trapezius myalgia and sleep quality in 60 female and male individuals employed at casinos between the ages of 20-49. Subjects were divided into three groups: a myofascial release therapy group (n=20), a massage group (n=20), and a control group (n=20). Each intervention lasted 15 minutes and was performed 4 times a week for 4 weeks. Pain was significantly decreased after the application of myofascial release therapy and massage (p<.05), however slightly increased in the control group, and myofascial release therapy reduced pain a little more than massage. Sleep quality was also significantly increased by myofascial release and mass (p<.05), however only slightly in the control group. The findings of this study suggest that myofascial release therapy and massage are effective in improving upper trapezius myalgia and sleep quality in casino employees.