Abstract: The existence of "identity" division in the labor market leads to the asymmetric impact of environmental regulation on the employment of different identities. Based on the perspective of "identity" segmentation, this paper empirically analyzed the heterogeneous impact of environmental regulation on labor employment of different identities and the mechanism of action by using panel data from 30 provinces from 2009 to 2018, and further verified the "identity" segmentation threshold effect of environmental regulation on labor employment by using panel threshold model. The results show that the impact of environmental regulation on labor employment has a strong correlation with its "status", and the negative impact of increased environmental regulation intensity on the employment of "non-state-owned", "foreign" and "non-monopoly" labor is greater than that of "state-owned", "local" and "monopoly" labor. Environment plays a significant role in regulation of the employment of "identity" segmentation threshold effect, when the Labour market is in middle, high division of "identity", environmental regulation to "a monopoly", "non-state" and "outside" individual job impact is negative, when the Labour market is in low segment "identity", environmental regulation to "a monopoly", "non-state" and "outside" influence from inhibition to promote employment.

Key words: "identity" segmentation, environmental regulation, labor employment, heterogeneity, threshold effect