-The research participant wishes to withdraw from the research, because the uncomfortable or uneasy with surveys or do not wish to record images and video, the study while working.
- The participant wishes to withdraw from the research. Because of discomfort or uneasiness with the questionnaire. Or do not wish to give researchers captured images and video while on duty.
- the participants were wished to withdraw from the research. Since the birth of the uneasy or uncomfortable with answering the questionnaire. Whether or not the desire to save the image and video data during working.