This study investigated the effect of organizational support climates on the relationship between job insecurity, job stress and service performance in the food service industry. Data were collected from 207 individuals of 32 restaurants and hierarchial linear modeling(HLM) was used to test research hypotheses. Results indicated that at the individual-level, job insecurity was positively related to job stress, while job stress was found to be negatively correlated with service performance. Result also showed that at the organizational levels, coworkers`` support climate, supervisory support climates, and social support climates were negatively related to job stress. Moreover, the organizational support climate was proved as a moderator in the relationship between the job insecurity and the job stress. Results from this study suggested that the organizational support climates might actually contribute to service performance by decreasing the job stress in the food service industry.