According to the current laws and regulations, all workers who have formed a labor relationship with the employer, whether they sign a labor contract or have a de facto labor relationship, whether they are the original so-called internal employees or the so-called informal personnel. For example, migrant workers and temporary workers are all regular employees of the company, what is different is into the unit sooner or later different or the length of the employment contract is different.
There is no difference between workers in terms of their identity.