The purpose of this study is to clarify factors related to perception of nursing students for group work (GW) in online classes. After GW used break-out session of ZOOM, we asked about the perception and related factors in online classes for 88 nursing students (Number of valid responses: 67). Then we performed Multivariate stepwise linear regression analysis. This study was approved by Research Ethics Committee of Naragakuen University (2-015). There are no conflicts of interest to be disclosed. In online classes, factors significantly related to perception of Goodness for GW were having Worth in Attitudes towards GW (ß=0.63), Psychological Security (ß=0.31), taking classes in my room (ß=0.13), and Stress Management in Social Skills (ß=0.12) (adjusted R²=0.78). Factors significantly related to perception of Contributions to GW were using Skills in Attitudes towards GW (ß=0.66), Psychological Safety (ß=-0.30), and taking classes in my room (ß=0.28) (adjusted R² =0.42). In online classes, we thought that the most important factor lead to perception of Goodness for GW is having Worth for GW. In addition, we thought that ensuring psychological safety, taking classes in their own room, and having stress management capabilities are also important factors. On the other hand, we thought that the most important factor lead to perception of Contribution to GW is using Skills in GW. However, this is a possibility that it has been raised in conditions that taking classes in their own room and no ensuring psychological safety.