Objectives: This study aims to investigate the effects of mindful meditation and yoga on reducing burnout and stress in care workers who assist elderly individuals. Knowing how to reduce burnout is important because that of care workers is associated with the quality of client care, worker productivity, and job turnover.Patients and Methods: The participants included 44 care workers who worked for elderly care facilities in rural Fukuoka. They were randomly assigned to one of three intervention groups: control, yoga, or mindfulness. In the yoga intervention group, a certified yoga instructor taught a 60-minute yoga session each week for six weeks. In the mindfulness group, an experienced medical doctor instructed a mindful meditation program for the same length. Participants were asked to complete the Japanese Burnout Scale (JBS), and the research team collected the level of α-amylase in saliva using NIPRO: T-110-N pre- and post-interventions.Results: MANOVA was performed with each intervention (control, yoga, mindfulness) as the independent variable on the three subscales of the JBS (emotional exhaustion, depersonalization, and personal achievement) and a biomarker of stress level (α-amylase). The results indicated a significant main effect of interventions, and a follow-up ANOVA showed a significant effect of interventions on emotional exhaustion and personal achievement.Conclusion: The results indicate that practicing mindful meditation or yoga for 60 minutes once a week for six weeks can reduce care workers’ burnout. This study was notable because the biomarker of stress also improved. It is strongly recommended and encouraged that institutions caring for the elderly population provide mindful meditation or yoga intervention to reduce burnout, which benefits not only care workers but also their clients.