This study aims to advance current understanding concerning situational cues that trigger identity threat at the workplace among temporary workers and associated effects on their integration outcomes in the flexible employment scenario. We used the social identity threat theory to empirically investigate the impact of the extent to which regular employees' job conditions are superior to those of temporary workers on these workers' outcomes, through the identity threat. In addition, we examined the moderating role of organizations' social integration practices. We conducted two empirical studies involving technical temporary workers in Chinese companies, in which we used polynomial regression analyses and response surface modeling. In Study 1, using a two‐wave time‐lagged design, we analyzed data from 480 temporary workers, and in Study 2, using a three‐wave time‐lagged multi‐source dyadic design, we analyzed matching data from 371 temporary workers and 64 supervisors. Our findings indicate that the extent to which regular employees' job conditions surpass those of temporary workers is positively associated with identity threat among the latter, increasing their turnover intention and undermining their job performance. Moreover, temporary workers' perceptions of their organizations' social integration practices weaken the effects of the extent to which regular employees' job conditions surpass those of temporary workers. Thus, this study contributes to related literature on social identity threat and temporary workers, and to practice, by offering offers insightful implications for managers to effectively manage this threat.