Since February 2020, there has been a gradual mitigation of responses as the COVID-19 pandemic has lengthened. However, the burden of COVID-19 operation in hospital coexists according to seasonal characteristics and virus variants, and quarantine policies of each government changes. Therefore, it is becoming more important to boost the morale of medical personnel, to maintain mental and physical health, and to promote satisfaction, stability, and a sense of belonging. We had done Health Promoting Hospital (HPH) activities over a decade, developing and applying various programs to enhance physical and mental health for patients, staff, and the community. While we are still with minimum protective equipment due to COVID-19, we tried to offer our staffs to get practical and psychological rewards and to inspire employee morale through HPH activities. In particular, as a municipal hospital with intensive care unit for COVID-19, there had been times when inhospital activities were not free. In response, the hospital executive department reorganized the structure into a field system to mobilize personnel into departments where demand and work are concentrated. Coming up with this trend, our HPH activities had also been transformed. For individual workers, initial meeting and progress report, online or non-face-to-face activity methods were used, or the risk factors of HPH activities were hedged and through small grouping of activity projects. Surprisingly, in the course of the various programs, participants responded that Simple and Fun is Beautiful. There were also experiential and training-type activities longer than a month with communication and feedback with managers. But, short experiences that arouse interest, small groups where meals and refreshments are prepared, etc., evoked a more explosive and immediate response. We would like to share and review our recent experience in the aspect of health care workers work-place well-being and enforcement of morales.