Abstract
In order to examine effects of introducing a team system for care workers in a company providing visiting care, the present study initially attempted to conduct an experiment with a single-case design. However, because it was anticipated that this would increase the care workers' burden, that experiment was not carried out. Instead, after the project of introducing the team system had finished, a retrospective analysis was conducted, which targeted 5 part-time care workers who had formed a team and examined their behavior of posting reports to the company's report system, assuming that effects of the formation of the team had been investigated in a quasi-experiment with an A-B design. The results showed an increase in the frequency of report posting by 2 of the care workers, and a change in the content of another care worker's reports after the introduction of the team system. This suggests that a retrospective analysis assuming an A-B design may be useful for delineating effects of an attempt at organizational development. However, it was also found that, in the field of visiting care, obtaining information necessary for experiments was difficult, which hampered rigorous verification of effects of the organizational development introduced.
