RESUMEN
The purpose of this study was to investigate the correlations between nursing staff's mental health, number of years worked, night shifts performed, and pleasant activities at the workplace. One hundred forty-three subjects who had no missing data were analyzed. Questions consisted of basic attributes, subjective happiness scale (SHS), and pleasant activities conducted at the workplace. Denouements of SHS indicated a significant trend for the main effect, with more pleasant activities in the high SHS group than the low SHS group. The interaction was significant, with fewer pleasant activities in participants in the low SHS group who worked the night shift compared with those who worked the night shift regardless of work experience. The outcomes of this study suggest that it is essential to expand the repertoire of pleasant activities at the workplace to increase the subjective happiness of nursing staff for older individuals.