Happiness is a lifelong pursuit of people. Happines index is an important indicator to rate the extent to which people are satisfied with their life in a country or region.The present study discussed happiness of urban residents from a perspective of employment quality. According to analysis results of Shenzhen Social Quality Investigation Data，it was found that urban residents' happiness is negatively correlated with their work fatigue and positively associated with the stability of their employment，professional classes，and job satisfaction. In addition，it was found that social insurance serves as a facilitator of happiness while risk of unemployment is a negative predictor of happiness. The implications of findings for the future direction of public policy were discussed.