Although face plays an important role in our daily interpersonal interactions, little is known about how people perceive face-loss. An open-ended survey revealed that the need to protect face consists of two factors: the presence of others and social role involvement (Study 1). In a follow-up scenario experiment, it was found that participants perceived protagonists as losing face most when the protagonists failed to fulfill a social role in the presence of others. The effect of failure in a social role on perceived face-loss was mediated by role expectations (Study 2). The involvement of one’s social role in public situations triggers a sense of face-loss in Japanese culture. Future research is encouraged to explore the generalizability of these results in cross-cultural contexts.