This study is aimed at analyzing the influence of personality towards performance, organizational support towards performance, as well as organizational support as a moderator of the relationship between personality and employers' performance in the banking industry in Kupang City, East Nusa Tenggara Province, Indonesia. The research sample was 92 respondents from a total of 124 customer service (CS). The analysis was conducted using moderation regression (MRA) with SPSS Version 20. The results showed that (1) personality has got a significant effect on performance, (2) organizational support has got a positive and significant effect on performance, and (3) organizational support has got a significant positive effect in moderating the relationship between personality and employers performance