Emergency workers are frequently exposed to hazardous situations and such life patterns can influence their wellbeing . This study examined the relationships among South Korean emergency workers' precedents and consequences of positive emotion, engagement, relationship, meaning, and achievement (PERMA), a wellbeing concept, and offered solutions . A total of 597 emergency workers in Daegu, South Korea, participated in a survey . This study measured post-traumatic stress disorder syndrome, burnout, depression, PERMA, quality of life, life satisfaction, and sleep quality to test the relationships . Results demonstrated that post-traumatic stress disorder syndrome and burnout predicted distracting sleep behavior and sleep health . Depression was significantly related to PERMA . The better the emergency workers' PERMA was, the better their quality of life and life satisfaction were . PERMA significantly predicted sleep behavior, a portion of sleep quality . Depression had an indirect influence on quality of life mediated by PERMA . Post-traumatic stress disorder syndrome, burnout, and PERMA were significant predictors of low sleep health and sleep behavior . The results indicate that South Korean emergency workers struggle with depression and sleep quality . As the data were collected during the coronavirus disease 19 pandemic, individual efforts and relevant programs to improve South Korean emergency workers' PERMA and sleep quality in a crisis are recommended . Possible solutions to improve the wellbeing of South Korean emergency workers are suggested.